Document 82nXnL83r5BwYYGm1q0Z4eZRo

:m EM I CAL AB.STRA Vol. 75 DECEMBER 27, 1971 No. 26 35--SYNTHETIC HIGH POLYMERS H. K. LIVINGSTON 2l>89x Glvcol vinvl ethers. Mikhant'ev, V. B. (Voronezh. rington/Urmston/Manchester, Engl.). Chem. Eng. (London) .. Voronezh. USSR*. TV. Voronezh. Gos. Univ. 19G9. 73i2), 1971, No. 251, 264-9 (Eng). A review with 21 refs. The topic of i. The methods used in the synthesis of glycol vinyl ethers are the title is discussed for high- and low-d. polyethylene and tssed, without refs. The reactivity of glycols in vinylation polypropylene. lions increases in series: eth\lene glycol vinyl ether < dieth- 152102w Thermal degradation of poly(vinyl chloride). s glvcol vinyl ether < triethylene glycol vinjl ether. Ethyl- Braun, D. (Dtsch. Kunstst.-Inst., Darmstadt, Ger.). Pure Appl. vinyl ethylene glycol ether copolymer absorbs more moisture, Chem. 1971, 26(2), 173-92 (Eng). A review with 70 refs. Initia is better printability than poKethylene, and it may be of in- tion sites for the thermal degradation of poly(vinyl chloride), the -t to the textile and printing industries. dehydrochlorination mechanism, polymer heat discoloration, and '2(t9r Introduction (to macromolecular chemistry], the effect of plasticizers on the degradation rate ore discussed. mpetier. G. (Fac. Sci. Paris. Paris, Fr.). Chim. Macromol. 152103x 1,3-Dipolar cycloaddition and related polymeriza >. 1. 9-39 (Fr). Edited by Champetier, Georges. Hermann: tion reactions. Marquez, C. (Cent. Nac. Quim. Organica, s, Fr. A review with no refs, of the bonding, interactions, Spain). Rev. Plast. Mod. 1971. 22(179), 706-14, 716-20 (Span). s. stereoregularity, and nomenclature of macromols. A review of the cyclopolymn. of dipolar aromatic nitrilimines, 21)9Is New photosensitive polvmers. Kato, Masao (Ind. nitrile oxides, sydnones, nitrones, diazo alkanes, and azides to h. Res. Inst.. Tok\o. -Japan), Sen-i To Kogyo 1971. 4(3), give polyimidazoles, polytriazoles, polyoxazoles and polyoxadia- 7 (Japan). The synthesis of vinyl monomers contg. photo- zoies. itive groups and photosensitive polymers was reviewed with 152104v Anionic telomerizations. Asahara, Teruzo; Seno, vferences. Y. Kikuchi Manabu: Tanaka. Sadayoshi (Inst. Ind. Sci., Univ. Tokyo, >2092t Photochemical reactions of macromolecules, Tokyo, Japan). Yukagaku 1971, 20(7), 385-94 (Japan). A review ulz. R. C.; Boes.'ler. H. H. (Inst. Makromol. Chem., Tech, with 65 refs. hsch., Darmstadt, Ger.). Umsthnu 1971. 71(18). 673 (Ger). I52IU5z Opticaliv active polyamides. Parker, G. M. (Italy). discussion of photochem. reactions in polymers including Nuova Chim. 1971, 47(6), 89-94 (ltal). The prepn. and polymn. in lengthening, crosslinking, and reversible and irreversible of methyl substituted hexahydro-2H-azepin-2-ones in an attempt rrangements. to obtain optically active polyamides is reviewed with 18 refs. 52093u Texture of crvstalline polvmers. Brief review, 152106a Organic peroxides. Nakashio, Y. (Sanken Chem. s, D. V.; Bassett. I), C. (J. J. Thomson Phys. Lab,. Univ. Co., Japan). Enka Bimiru To Porima 1971, 11(7), 27-32 (Japan). ding, Reading. Engl.). J Mater, Sci 1971. 617), 1021-35 A review on polymn. initiators with 24 refs. igl. A review with J5S refs, on cryst. polymer texture includ- 152107b Practical azo-tvpe polymerization initiators. Na- iriation of chain lold length with crystn. temp., lamellar gaoka, J.: Minamii, N. (Wako Pure Chem. Ind. Ltd., Japan). hing, polymer crystn. theorie-. morphol. of cryst. polymers, crystd. polymer.-,, fold surface structure, extended-chain stals, and flow, stress, and high pre-sure crystn. )209fv Polvmers derived from hvdrazine. Imai, Yoshio >kyo Inst, Technol.. Tok\o. Jai>an). Yuhi Gosei Kogahu Kyo- Enka Biniiru To Porima 1971, 11(7), 17-26 (Japan). A review with 29 refs. 152108c Structure and reactivity in copolvmerization. I. Limits of the classical composition equation. Solomon. O. F.; Vasilescu, D. S. (Rom.). Mater. Plast. (Bucharest) 1971, 8(7), Shi 1971, 29(2), 97-113 Uapan). A review is given on the syn- 348-55 (Rom). A review with 72 refs, on the applicability of the sis of polymers derived by condensation between N.Hi, dihy- Mayo-Lewis equation (1944) on the compn. of a binary copoly izides. diamidrazuncs, dialdehydcs, diketones, dicarboxylic mer. ds (and their derivs.l, tetracarboxvlic dianhydrides, diisoev- I52109d Svnthesis and properties of polvphenvls and polv- ates, and diisothiocyanates. 75 refs. K. Sempuku phenvlenes. Speight, James G.; Kovacic. Peter; Koch, Fred W. I52095w Radiation-induced chain reactions in polvmeric (Prod. Res. Dev., Res. Counc. Alberta, Edmonton, Alberta). J. terns. 1, Homopolymerization of vin\l compounds. Ka- Macromol. Sci., Rev. Macromol. Chem. 1971. 5(2). 295-386 (Eng). a, Tsutomu; Hagiwara. Mtyuki (Far. Eng., Kyoto Univ., The synthesis and properties of polyphenyls and polyphenylenes oto, Japan). Kagaku {Kyoto) 1971, 26(1). 73-86 (Japan). A were reviewed with 410 refs. view with 51 refs, discusses ethylene polymn. kinetics including 1521 lOx Dependence of flow properties of polystyrene on tiation, effects of fluormated compds., and irradn. molecular weight, temperature, and shear. Casale. Antonio; T, Okada Porter, Roger S.; Johnson, Julian F. (Polym. Sci. Eng., Univ. I5209GX Origins of the concept of high polvmers. 1. Kauf- Massachusetts, Aml.- st, Mass.). J Macromol. Sci.. Rev. Ma an, Morris (Rubber Plast. Process. Ind. Train, Board, Brent- cromol. Chem. 1971, 5(2), 387-408 (Eng). The flow properties of rd/Middlesex, Engl.), Educ. Chem 1971. 8( 1), 26-7 (Eng). A polystyrene and their dependence on rheol., mol. wt., intrinsic view with no refs. Colloids and natural products are discussed viscosity, temp, and shear were reviewed with 49 refs. th emphasis on the contributions of H. Staudinger. 152111v Synthesis methods and properties of polvazoles. )52097y Recent trends in organic reactions under high pres Korshak, V. V.; Teplyakov, M. M. (Inst. Elem.-Org. Com ses. Terasawa, Seiji: Itsuki, Hidenori <Dep. Synth. Chern., pounds, Moscow, USSR). J. Macromol. Sci.. Rev. Macromol. >kyo Inst. Technol.. Tokyo, Japan). Yukt Gonei Kagahu Kyo Chem. 1971, 5(2), 409-50 (Eng). The synthesis, properties, and li Shi 1971, 29(6), 567-76 (Japan). A review with 76 refs, on tbe types of polyazole structural units were reviewed with 267 refs. feet of pressure on rate consts., solvent dependency of the acti- 152112z Evolution of long-range order in disordered sys ition vol., pressure dependency of polymn., and phys. properties tems bv accumulation of small random disturbances. Flem polymer under high pressures. T. Hayakawa ing, R. J, (Dep. Phys., Monash Univ., Clayton. Aust.). J. Polym. 152()98z Polvmers with high heat stability. 1. Polvimides. Sci., Part B 1971, 5(8), 573-7 (Eng). Calcns. utilizing 1 -di abe, S, G.: De Abajo, F. -J. (Inst. Plast. Caucho, Madrid, mensional models of disordered systems indicated that long-range pain). Rev. Plost. Mud. 1971, 22(177), 582-7 (Span). A review order in these systems, e.g. polymeric materials, was probably not ith 23 refs, discusses the prepn. and properties of heat resistant derived from accumulated random disturbances of the equil. at. niviniides. or mol. sepns. The calcns. did not indicate that the spatial ex 152099a Formation of polvmer crystals during polvmeriza- tent of long-range order increased as positional uncertainty de on. Iguchi, M.; Kanetsuna. H,; Kawai, T. (Res. Inst. Polym. creased. ext.. Yokohama. Japan), Brit Polym J. 1971, -3(41, 177-85 152113a Unique organosilicon polvmers: design-synthesis- lug). A teview with 54 reN. Solid-state polvmn.. polymn. ki- Icsting. Derivatives of cleoslcaric acid: svnthcxis-uscs-poten- Lvs of polymer-precipitating sxstems. and the crystal iormation tials. Evans, James Marcus (Univ. South. Mississippi, Hatiis- lng the prepn. of poly met hs lene. polyethylene, nylon, and burg, Miss.). 1971), 161 pp. (Eng). Avail, Univ. Micrutilms. Ann K loxy'inethylenel are discussed. Arbor, Mich., Order No. 71-13,569. From l)iss. Abstr. Int. B l.721(jl)u Reactive poKmers. Imoto, Minoru (Kansai Univ., 1971, 31(12)(Pt. D.7183. )saka, Japan). Kobunshi Kahn 1971, 2(1(4), 179-92 (Japan). A 152114b Desorption method for removal of low molecular ,w iew with about .70 refs, compounds from molten nvlon 6. Strck, F\, Zaborowska, A.; 152IOIv Chemical changes in polvolcfins during extrusion Nastaj, J. (Politech. Szezecinska.. Szczecin, Pol.). Chem Stos- md their control. Burch, G. M, (Shell Chem. (U.K.) Ltd.. Car coir, 1971, 15(1), 29-37 (Pol). Hot niirogcn gas was bubbled 'age 1 OLl 7311 mineral filler. Dieumyl peroxide was used as the structure- (Eng). Poly(vinyl acetate) (I) bonds to silica support forming agent. The polymer filler content was 30 vol. % in bonding mechanism and on pyrolysis of the supported j, all cases. Max. reinforcement, heat resistance, and aging AcOH was eliminated and a polycyclic aromatic com; resistance of crosslinked polymer systems was established in formed. A soln. of I in Me-CO was mixed with SiO, the carbon black-loaded polyethylene. Partial replacement of carbon pressed into a disk, and ir measurement was made in vo black with chalk during polyethylene loading decreased the the pyrolyzed samples. SiOi had a slight stabilizing el structure-formation effect of the compns. However, compns. the polymer towards pyrolysis. contg. 20 vol. % carbon black and 10 vol. % chalk still have 77590y Infrared spectroscopic study of the structural adequately high operational properties. Max. deformability of fication of AVKh-8P and AVI-8P anion exchangers crosslinked polyethylene loaded with carbon black and its com ionizing radiation. Khasanova, V. M.; Kiseleva, 1 bination with pptd. chalk was achieved with 3-5% by wt. Chmuinov, K. V. (Inst. Fiz. Khim., Moscow, USSR). Z peroxide. Khim. 1971, 45(5), 1277-9 (Russ). The irradn. of AVKI. 77584z Chromatographic analysis of the alcohol components AVI-8P (prepd. by treating chloromcthylated divir.yibe of alkyd and polyester resins. Lushchik, V. 1.; Zlobina, V. R.; styrene copolymer with quinoline or isoquinoline resp. (B: Gomozova, V. G. (USSR). Lakokrasoch. Mater. Jkh Primen. V. M.; Chupikhin, O, N., 1968)) with -y-rays in vacuui 1971, (3), 41-3 (Russ). The polyol fraction of alkyd and poly or water does not alter their ir spectra significantly. The i ester resins was analyzed quant, by aminolysis of the resin with of these anion exchangers in 7 N HNOa causes the decu HO(CHj)tNHt and acetylation of the free Ci-Cs glycols, di- the intensity of the ir bands corresponding to NO~ and ethylcnc glycol, glycerol, trimetliylolpropane, and pentaeryth- gioups (which indicates the decrease in the no. of the i ritol with Ac20; the resulting polyol acetates were analyzed with changing groups) and an increase in the CO absorption <10% error by gas-liq. chromatog. using 5% polyethylene glycol eating oxidn). adipate on Chromosorbat 100-220 with N carrier and a flame- 7759lz Determination of the acid number of carboi; ionization detector. taining alkylphenol-formaldehyde oligomers. Kuz'micht 77585a Oxidation-reduction polymers based on halomethyl- I.; Filippychev, G. F\ (USSR). Lakokrasoch. MaUr ated polystyrenes. Ergozhin, E. E.; Rafikov, S. R.; Mukhitdi- Primen. 1971, (3), 44-5 (Russ). The acid no. of low-mr nova, B. A. (Inst. Kliim. Nauk, Alma-Ata, USSR). Kinet. F'/eri-butylphenol-formaldchyde-salicylic acid copolymer Mech. Polyreactions, Int. Symp. Macromol. Chem., Prtpr. 1969, detd, with <7% error cither by titrn. of a dioxane soln 5, 71-4 (Russ). Akad. Kiado: Budapest, Hung. The exchange methanolie KOH in the presence of bromophenol blue, of Cl atom for 1 or Br in chloromcthylate'd styrene-divinylbenzene measurement of the 1CG0 cm'1 peak in the ir spectrum. copolymer (I) increased their reactivity towards quinones, tri- 77592a Apparatus for studying the gas permeabili hydric phenols, ales., or ethers. Ion exchange resins, obtained , polymer materials. Manusadzhyan, V. G.; Sorochishin, from iodometliylated or bromomethylatcd I, had increased ion (USSR). Plasi. Massy 1971, (0), 60-7 (Russ). A dif exchange capacity due to the gicater extent of halogen group cell device is described for detg. the gas permeability ol pc replacement by redox groups. The optimum temps, and I- materials under const, pressure conditions of 2-3 atm. to 1 reactant ratios were detd. Hg; such detn. on epoxy resin films or plates took 10-20 it 77586b Effect of preirradiation conditions on the grafting of 77593b Dielectric relaxation of an alkyd resin and its / acrylonitrile to radioehemically peroxidized poly(vinyl chloride) tions. Kavcrinskii, V. S.; Yakunina, G. V.; Ermilov, films. Eocx, Michele; Jendrychowska-Bonamour, Anna M. (USSR). Lakokrasoch. Mater. Jkh Primen. 1971, (3), (Lab. Chim. Radiat., CNRS, Bellevue, Fr.). Kinet. Mech. (Russ). The dielec, const, and the frequency of the diclet Polyreactions, Int. Symp. Macromol. Chem., Prtpr. 1969, 4, factor max. of glyptal resin and its fractions at 50 and 150 247-9 (Er). Akad. Kiado: Budapest, Hung. The radiochem. decreased with increasing mol. wt.; the former increased peroxidn. of noiiplaslicized PVC does not give a chain reaction, temp., and the latter showed 1 max. in the range 20-00. while extn. of the films with CHCIj followed by peroxidn. and obsd. variation in the orientational dielee. properties and grafting gives relatively short chain copolymers, possibly due cond. at 40-50 corresponded to a breakdown in scco to the presence of com. PVC stabilizers which inhibit peroxidn. structure and changes in intra- and intermol. interactions. Lucoflex and Armodour PVC films were irradiated using a Co" 77594c Degree of curing of unsaturated polyester resin source, plasticized with CHCIj, and grafted to give acrylonitrile- glass-fiber reinforced plastics made from them. Klaban peroxidized PVC graft copolymers. (Vyzk. Ustav Synt. Pryskyric Laku, Pardubice, Cz 77587c Thermal degradation of graft copolymers of PVC Plasi. Hmoty Kane. 1971, 8(5), 129-31 (Czech). The deg prepared by mastication with styrene and methyl methacrylate, crosslinking of cured polyester resins is characterized b and of further PVC mixtures and vinyl chloride copolymers. concn. of unreacted styrene, the amt. of extractable mat McNeill, I. C.; Neil, D.; Guyot, A.; Bert, M.; Michel, A. and the content of polystyrene and unreacted double bot (Chem. Hep., Univ. Glasgow, Glasgow, Scot.). Eur. Polym. J. the extd. resin. The unreacted styrene was detd. p 1971, 7(5), 453-09 (Eng). Poly(vinyl chloride)-methyl methac graphically as the pseudonitrosite. The resins were extd. rylate-styrene graft copolymer and po!y(vtnyl chlorideVstyrene CHCIj and the amt. of sol. material detd. by wt. loss or I graft copolymer on thermal degradation showed a retardation of spectrometry of the ext, at 276 nm. Unreacted double ! the dchydrochlorination reaction and gave chain fragments and and styrene units were detd. from ir spectrometry. The c no monomer during HC1 production. The graft copolymers were of sol. material was correlated with the concn. of unre prepd. by the mastication of poly(vinyl chloride) (I) with the double bonds. Resins prepd. using phthalic anhydride cont corresponding monomers. Thermogravimetry, HC1 titrn., ther some sol. material, presumably a phthalate polyester, even mal volatilization anal., and flash pyrolysis were used for studying full crosslinking. degradation comparisons, Polystyrene-I mixt. behaved similarly 77595d Joint effect of fillers and plasticizers on the ti to the com: >onding graft copolymers, but vinyl chloride-styrene strength and electrical conductivity of poly(viny) chio copolymer showed reduced stability towards dchydrochlorination Skorospelova, E. V.; Fedoseeva, E. G.; J'el'dman, and monottf-r production, compared with the homopolymers. (Tsent. Nauchno-Issled. Inst. Svyazi, Moscow, USSR). A`, Poly(-metl:ylstyrene)-I mixts. gave, on degradation, the Zh. 1971, 33(3), 430-9 (Russ). Cornpn.-property diagra monomer concurrently with HC1 loss. Cl atoms are involved poly(vinyl chloride) (I) filled with carbon black, contg. | as chain carriers in the thermal dchydrochlorination of I. cizers (tricresyl phosphate, dioetyl sebaeate, or mixed phtl _77588d Thermal degradation of graft copolymers of PVC esters), and stabilized with Pb silicate or Ca stearate, show with methacrylates, and comparisons with the behavior of only the optimum amts, of filler (47-8%) ensure the max. t random copolymers and polymer mixtures. Guyot, A.; Bert, strength at break (a). Lower than optimum carbon black M.; Michel, A.; McNeill, I. C. (Inst. Rech. Catal., CNRS, cause structural delects; too large amts, cause structure Villeurbanne, Fr.). Eur. Polym, J. 1971, 7(5), 471-87 (Eng), homogeneity. The elec.-vol. resistance changes with the t The thermal degradation behavior of poly (vinyl chloride)- of filler ordering and it can be correlated with a of I. methacrylate graft copolymers, prepd. by the mastication of 77596e Degradation of voidless fiber-reinforced plastic poly(vinyl chloride) (1) with a methacrylate, is more similar to their breakdown voltage. Kadoya, Kenzo; Kasahara, ' that of the corresponding homopolymers mixt. than that of the toshi (Hitachi Res. Inst., Hitachi Manul. Co., Tokyo, Ja corresponding random copolymers. Thermogravimetry, HC1 Kyoka Purasuchikkusu 1971, 17(2), 49-55 (Japan). The t titrn., thermal volatilization anal., and flash pyrolysis were used of thermal degradation, moisture content, and heat cycle (pe for studying the degradation differences. The I component in heat treatment) on rupture voltage lowering of vnidless OLI 7312 the graft copolymers showed, as in the mixed polymer systems, fiber reinforced epoxy resin laminates were shown graphi a retardation of HC1 loss. In mcthaerylatc-rich copolymers, a The thermal degradation may be prevented by owirin destabilization o! 1 and the methacrylate components was obsd. laminate edges with the resin impregnated g!a--s cloth < The dehvdioehloriiiation^n I proceeds by a radical mechanism. coating the edges with heat resistant paint to retard tlie difi The different behavior of random copolymers was caused by the of O. reaction between adjacent methacrylate and vinyl chloride seg 77597f Diffusive and hydraulic permeabilities of wat ments with the formation of lactone rings in the copolymer. water-swollen polymer membranes. Yasuda, H,; Lai 77589e Pyrolysis of poly(vinyl acetate) supported on silica. C. E.; Peterlin, A. (Camille Dreyfus l.ab., Res. Triangle Seymour, R. C-; Westwood, A. R. (Phys. Chem. Dep., Bristol Research Triangle Park, N.C.). J. Polym. Set., Part .4-2 Umv., Bristol, Engl.). Eur. Polym. J. 1971, 7(5), 419-32 9(6), 1117-31 (Eng). The diffusive and hydraulic pvimea i 64532 Chemical Abstracts Vol. 75, 1971 ft> r phys. Rcinstmet., Dtscli. Akad. Wiss. Berlin, Berlin, Ger.). Kind- Mcrh. Polyreadinns, Int. Symf>. Mncrmnnl. Client., Prepr. 1069, 4, 257-63 (Ger). Akad. Kiado: Budapest, Hun^- The grafting velocity of gaseous tctrafluotoethylene onto irradiated low <1. polyethylene film at --10 to 80 is directly proportional to monomer conen. and increases with radical concn. to a max. at /--6 X 10-7 mole'1. The initial velocity increases with temp, to a max. at --40 and is detd. mainly by the Cl'VCF* permeation velocity. The initiation activation energy is 7.9 kcal'mole and for the CI-V.CFs permeation is 7.7 kcal'mole. Overall grafting velocity increases with temp, in the 20-60 range. 64532f Pyrolysis of plastics. V. Polypropylene. Lc Moan, G.; Chaigneau, M. (Lab. Toxicol., Fac. Pharm., Paris, Fr.). Ann. Phnr;:t. Fr. 1971, 29(4), 259-C2 (Fr). The pyrolysis of polypropylene (1) in atms. contg. O or oxygenated compds. at 300-500 gave COi, CO, H, Ci_s satd. aliphatic hydrocarbons, polycyclic and aromatic hydrocarbons. Nonene and trimethylnonene or dodecene were detected in the degradation of 1 at 500 in air. Condensable degradation products were indepen dent on the type of pyrolysis atm. 64533g Competition during charge capture by additives in 7-irradiated polyfvinyl chloride). Kotov, B. V.; Pravednikov, A. N. (Fiz.-Khim. Inst. im. Karpova, Moscow, USSR). Dokl. Akad. Rank SSSR 1971, 198(1), 134-7 (l'hys Chcml (Russ). The effectiveness of electron donors tri-p-tolylaminc (1), N,N,- A^'.W'-tetrametliyldiaminodiphcnylmcthanc, anthracene, and terphenyl in PVC film during charge capture competition under 7-irradn. decreased in the stated order; that of the electron ac ceptors 7,7,8,8-tetracyanoquinodimethan (II), tetracyanoethyl- ene, ^>-bromoaniline, p-chloroaniline, duroquinonc, and 1,3,5-tri- nitrobenzene under similar conditions decreased in the stated order. Donor-acceptor competition between 1 and II in PVC was approx, equal under 7-irradn., but the I radical-cation con centration exceeded the II radical-anion concn. under photoion ization. Three mechanisms are proposed. 64534h Thermal degradation of polymers from lactones. Jaacks, V.; Iwabuchi, S.; Galil, F. (Inst. Org. Chem., Univ, Mainz, Mainz, Ger.). Kind. Mcrh. Polyreactions, Int. Symp. Macromol. Client., Prepr. 1969, 5, 375-8 (Eng). Akad. Kiado: Budapest, Hung, Kinetics of poly(propiolactone) thermal degradn. indicated that the random chain cleavage due to for mation of 1 unsatd. and 1 acidic chain-end and subsequent acrylic acid cleavage from the acidic chain-end are reversible processes and that the acrylic acid polvaddn. occurs to form a polyester. 64535j Kinetic investigation of thermal degradation of poly mers by dynamic thermogravimetry. Szekely, T.; Till, Borossay, Gy. (Lab. Inorg. Chem., Hung. Acad. Sci., Buda pest, Hung.). Kind. Mcrh. Polyreactions, Int. Symp. Macromol. Chem., Prepr. 1969, 5, 403-7 (Eng). Akad. Kiado: Buda pest, Hung, Requirements for reliable evaluation of polymer thermal degradation kinetics by dynamic thermogravimetry were discussed with 8 refs, and illustrated with SE 30, poly(dimcthylsiloxanc), and Teflon. 64536k Temperature dependence in the degradation of poly- (vinyl chloride ). Kelcn, T.; Balint, G.; Tudos, F,; Galambos, G. (Cent. Res. Inst. Chem., Hung. Acad. Sci., Budapest, Hung.). Kind. Mcrh. Polyreactiom, Int. Symp. Macromol. Chem., Prepr. 1969, 5, 193-7 (Eng). Akad. Kiado: Budapest, Hung, Kinetics of the degradation of polyfvinyl chloride) (I) at 170-240 showed the formation of 2 kinds of cyclic transi tional complexes having different energy content, depending on degradation temp. During the degradation, argon was bubbled through I soln. in dioctvl adipate, the dchydrochlorination was obsd. by cond. measurements and the formation of polyenes was detected photometrically. 64537m Degradation of polyisobutylene produced by dicumyl peroxide in a binary mixture of solvents. Mikulova, Z.; Lazar, M. (Polym. Inst., Slovak Akad. Sci., Bratislava, Czech.). Kind. Mcrh. Polyreadions, Int. Symp. Macro mol. Client., Prepr. 1969, 5, 335-40 (Eng). Akad. Kiado: Budapest, Hung. Thermal degradation of polyisobutylene m the presence of dicumyl peroxide (I) in various solvent mixts. increased linearly with I concn. in pure solvents, exhibited ad ditivity in aliphatic and aromatic solvent mixts., but was re duced (compared to pure solvent) in cyclohexane (Il)-alkylaromatic and II-cyclohexanol solvent mixts. 64538n Hydroboration of polyisoprenes and polybutadienes. Levesque, Guv; Pinazzi, Christian (Lab. Chim. Org. Macro mol., Lc Man-,, Fr.). Bull. Soc. Chim. Fr. 1971, (3), 100S-10 (Fr). 3,4-Polyisoprene ami poly butadiene reacted quant. 4 H J OH 'i-k /\ -CH2 - ch2- with dieyelohexylborane and HiOi-NaOH to give 3-dimcnsional sol. satd. polyols by anti-Markovnikov hydration, rfj-1,4- Polyisoprcne was treated similarly with 1,1,2-trimelhylpropylborane and Il/O-.-NaOH to give (I). 64539p Interaction between polyions and counterions. Potentiometrie study of poly (acrylic acid) neutralized with ; line earth metal hydroxides in dilute aqueous solutions. V czak. Zbigniew (Univ. Torun, Torun, Pol.). Rocz. Chem. 1 45(2), 237-45 (Eng). A shift toward lower pH values, v increases in the order BafOH); < NaOH < Ca(OH):, o> during the neutralization of poly (acrylic acid) with the 3 b as obsd. by potentiometry. A conformational transition o: polymer causes inflections in the potentiometrie curves obta with BafOH band N'aOI 1. 64540g Analysis with a pyrolysis-gas chromatograph-r spectrometer system. Polyimides. Butt, P. I.; Cotter L. (R. Aircr. Establ., Farnborough, Engl.). U.S. Clea house Fed. Sci. Tech. Inform., AD 1970, No. 717S60, 23 (Eng). Avail. NT1S. From Govt. Rep, Announce. ( 1971, 71(6), 53, CO, COs, and SiFi were identified as the rr pyrolysis products of a polyimidc and pcrfluoroalkylene-lii polyimides using a gas chromatograph-mass spectrometer tern. Thermal decompn. schemes were developed and re obtained with model compds, suggested that pcrlluoroalkj groups had a greater effect on the electron-impact behavic the imidc ring than on its thermal breakdown. 64541h Effect of substituents on chain transfer reactivi III. Effect of aromatic nitro compounds on the retardatio polymerization of styrene. Ota, Tadatoshi; Masuka, k Aoyama, Chiyoko (Fac. Eng., Tokushima Univ., Tokushi Japan), Kogyo Kagaku Zasshi 1971, 74(5), 998-1001 (Jap Radical polynm. of styrene at G0 was inhibited by the presi of 0.1 mole/l. p- and w-substituted nitrobenzene, such as pthoxynitrobenzene, or Hi-incthylnitrobenzcne. The polarit; the substituents contributed to the chain transfer reactivitic the substituted nitrobenzencs toward polystyrene radical. 64542j Effect of ultraviolet irradiation on polyethylene sistance to partial discharge action. Il'chenko, N. S.; 1 lenko, V. M. (USSR). V'csOi. Kiev. Pohtekh. Inst. Scr. Ri. elcktron 1969, No. 6, 110-15 (Russ). From Ref. Zh., Ki 1970. Abstr. No. 11S408. The stability of polyethylene to tial discharge increased after prior uv irradn. Polyethy film 100 n thick was studied; the irradn. time of film by a PR tube in the air was 0, 1,6, 15, and 00 hr. Polyethylene stab was evaluated with time to breakdown during same inter, partial discharge action, irradn. of polyethylene incrc. the service life 50rf times during tests. The effectiveness creased with greater irradn. time. A possible explanation the process is a free-radical mechanism of degradation of p ethylene by partial discharge. 64543k Thermal degradation of styrene block copolyr and dibasic aliphatic acid polymer peroxides. Tsvetkov. S.; Markovskaya, R. F, (USSR). Khun. Khun. 1'ckl: 1969, No. 2, 111-13 (Russ). From Ref. Zh., Kliim, 1' Abstr. No. 11S367. Thermal degradation of styrene b copolymers and sebaeic acid polymer peroxides in the solid p at 60-80 occurred by a uiiimol. mechanism. Thermal degr. tion rate consts. at GO, 65, 70 and 75 were 1.14, 2.32, 4.35, 8.28 X 10~4 see-1, resp.; the total activation energy is kcal 'mole. A styrene block copolymer and a nonanedicarbox acid polymer peroxide decompd. by a monomol. mechanisi the same reaction rate. Degradation of peroxide bonds in - polymers did not affect the d.p, A similar process in PhM the presence of free-radical deactivate-" decreased the mol. of the polymer. 64544m Preparation and reaction' of polymeric Gi reagents. Greber, G.; Merchant, S. ilnst. Makromnl. Cln Univ. Freiburg/Br., Freiburg. Br., Ger.). Kind. Me<!.'. I reactions, Int, Symp. Macromol. Cliem., Prepr. 1969, 5. K (Ger). Akad. Kiado: Budapest, Hung. Treatment of t Cl' CMzCONHNH; I (4-vinylpyridine) or a 4-vinylpyridine-styrcnc copolymer BrCHiCOjEt or ClCHjCO-Et and then with hydrazine hyd gives polymers contg. Girard's 1' reagent units, e.g., carb methylpyridinium chloride hydrazidc units il), that have reactivity of noupolymeric units even if the polymer is c linked with divinylbcnzcnc. 64S45n Radical kinetics in vacuum-irradiated poly(\ chloride) (PVC). Bartl, A. (Inst. Mctallphv-. Rcmstn Dresden, GeT.). Kind. Mali. Polyrav twits, hit, Symp. M, mol. Chem., Prepr. 1969, 5, 209-14 tGcr). Akad. Kudo: Bi pest. Hung. The radical kinetics detd. by El'K tor vacu irradiated PVC at 20-90 correspond to literature values, the radical decay curve at 40-90 is explained by a cage m for radical recombination. 64546p Kinetics of the thermal degradation of polystyre Vasile, Cornelia; Cascaval, C. N.; Schneider, loan Adam 1 OLI 7313