Document YjG26V496D8Qej2xLQqMkabDy

Mineral Products Laboratory September 17, 1956 . PERXCLITH Idthcpoaes U ', ., . In view of "current events" in the lithepone industry, it seems wort.i while tc review the lithopone picture and particularly our own grades cf Permolith* It seems fair to say that we are still in the lithcpone business because w can afford to asks it at a price that a goodly number of costorasrs ere willing to pay. V can do this because we have an efficient and -mil integrated plant. Customers are still willing to buy it because they feel that it contributes certain properties and attributes to their product,, which cannot be obtained with other pigments* Sh Pemsliths say be considered- to be of two basic types: the . noraal (or all-purpose) types and the water-wetting types. The former all carry a letter after the grade number, the latter all cany a W before the grade nus&er. She normal types may be farther divided into tlS Eegular Grades and the tte-Keactive Grades. The water-wetting types may also be divided into th regular Water-Wetting Grades and the lteter-Dispersibl - Grades. ' This classification leaves- us with one orphan, a Hydrophobic 1 - (or'nan-wetar^wettihg) grade, Perrolith 60-J. '\ .V f*|*- XQE bOM 60S The normal types of Permelith have no surface treatment or additive. Although not treated for enhanced countability with water systems, they do, nevertheless, wet in water and are preferred by some '-users- far water formulations. - ?Way -are ccj^atible with a wide variety of vehicles and matrices including vegetable oils, resin modified oils, mineral oils, proteins and latex dispersions, rubber and plastics. The difference between the three regular grades is almost entirely in consistency characteristics. They all possess excellent light resistance, color retention end gloss retention* aaasBa. 20-L (lew consistency) Wall piriaers and sealers. Flat mil paints* Caulks and putties. Chalks. Crsyons. Floor Tile. Linoleta. N11886 0007-SWP-000006557 PsmsCLilfc liQ-M.! &mmb1 Grade (eediHa'eoaeistmqr) latericr enaaels - eeHsi*gloaa sad high-gloss* ' ' Industrial finishes, ' Flaw snd task paint,, . . . Leather. ' .' - Plastics. .. Persolith 60-H. (nidium high cfflasisieney) -- . Traffic Faints. * The aea-reactir grades, like the regular grades, are; compatible with both oil and Hater systaas. Hewwrer, they have beea specially processed to haw a- asteg sine oside content of 0.10g. They are prtMrSSy - intended for use in oil whide seasitiwe to alkallnn pigsante sad where after-body sast be kept to a winisMa* Specific application indodes ose in oil doth sad. plastic finish#.. Peaaolith 10*41 produces :1m ansistaagy:. sad: . Peradith 60-S-Mdfaniii high consistency. . n - -- ' - ' - ' Htdrejahobie Prado " . ; . ' / . . - Fermlife .feedlm high eemstatengr) - . -# ,, .This is ^special lifchopoae in which a special organic trsataast 1 ia sp^Lisdea a SM-fesse.-. It exhibits superior wetting and dispersion is f oil rehldes -aad^i^irts hatter suspension in - the esa fer rasy ffegwwles.' ' It is coq^ctsly ;sseMi^tlng is water.' Water-Wetting fan ' ' ,/ . These Fesscllths have bees treated to prsride faster wetting and inczwsed eeapatibilitgr is water systems. Tale treateeat also produces increased. Mghrdry hiding characteristics* They are generally ec^mtible with 'oil, systens, as wan, hat ms& produce rather M#; saaiebeasie with certain reaetise weSsielea. . -FsTaaiith W-320 ' . : ' - ... ' . Water aad eamlaton palate latsas Feists* ' Oil and diyd flat paints* Patching Plaster. Orsdc-fillOT* . . . Forsdith W-320 is especially lew in soluble salt of diwaleat and trivalaat natala saeh as ealeiaa, nagnasiiai and aluadnun. It alas possesses excellent light resistance* ' ' Feswdith W-660 possesses somewhat greater high fey-hiding than FemsHth W3^> in west femulations. It has a higher water absorption and in gsaerel contritates higher consistency. .Because of the nature of the trwatasort, it dess not show the saw freedon Tnm calcine salts aa the W-320 grade* 0007-SWP-000006558 Grades : ' . - Kstsr-difipersiMLe grades carry, dispersing agent-da'addition to the wrter-wettiag treatment, They ar Intended eclasi-veiy for use in. water-teia.|teiw. : Parmslitia te<-li20. -ifedina Coasisteasy, Ifed. Dicpe . ' . Fsraslitfe W-h21. Lor Consistency* High isp. .. - Pegaolitfa W-kfel. Hadlm Consistency, High Bisp. ; Baraslith W-56Q. HMh Csasigteaasr. AriL Pisa. - fleradlith W-661. High Consistency, High Oisp. . Application f thse grate Include: - - KalSQaSa. ` .... . Paper posting and fining, ; . - ' .. Cassia paints. .' . ... laiez .paint.- ' . ' ' .' ' `: "Well papar finishes. - . ' ... Salts. ... -: . Brief ceasiderstiaB shahid be given to the qeestiea of edsM - salts. Saras sdsuaderstaading has 'arisen about the relative --aunts of . soluble 'salts in the regular grades of lithepea* and in the PeraaHtfe W-320. La --Idng the state& about lev salable salts la SfesaaHth H-320, reference w&s is^lied to' siadlsr eospetltive types of lithspoae, deeaam of the tm of the treateset, s o MsLb salts cannot'be kept as 1m as in regular untreated grades, A table stadag the specific resistance, *tfeh is a ssar of soluble salt contents sumsarlses the ~ ' ' Regular . 2q l , urn* m. Specific Hesistsacee 22,000 * 2&0D0 : 'Sott-flaeetlM " 1, 60H ' . ?,5O0 -20,000 m Water Ssneltivo W-320, W-660 3Soo- 5,ooo Water Bpa?sib2 ?ssy lew, water sdthls dispersants added. *Hlgh specific resistance indicates lew soluble salts end vie .m, ' -3- j 0007-SWP*000006559 lffialith Litocpeaea ,. These r at present four grades of Alballth that we ars seriously considering for rassnfacteir at Coffeyrille. - ' Aibelith ^62 wd Alh&iith rp. we understand, Ooraprtoed about 3QI of the total Albalith production, Tnese are both surface treated lithspoaes with hi^-dry-Mdiag properties and. ham' bees used' chiefly is water-base ' sTitsns., The treatment on tbs ts grades la identical, brut with the ' addition of a dispersing agent to the Albalitfe 332. Cfeffeyrill is cuxrshtly raakiag preparatiaos for & trial 'run..on this type of lithopoa, . asduhlleit is not espeeted that e^et-dsplieatieB can b sehtewd,. it .is feezed it will b sufficiently close to answer toe set^iiresasgto. . llbalitfa 13 -is coe'of th grades for which we here a -close eomtermtto at present. It is a relatively low consistency lithapone, haring low shesti1 properties. It is being used to our tem&edge in mm aeeoust intoltihg a. dead flat finish for:oil cloth. !@pduetiea.eg this grad iamlms 1 com fundaaental process ehmg and-ws are -not yrb in a position t atij^,t just_ haw closely It.eap'ba aeoowplished. \ : . ' to,AlheHth 7% is .very similar bat not identical with,1 ear' Fesnlito 'S3. T^trial. lot on this grade has slrsa^ bean aads, rad based an our teatr-dad'. thbas.of the rubber lahordtosy, it appears-to.hem been ' OTscessftO,. Future- lots-f Fsrsalith 6SKJ ar ^,jmsmd m this basis. This type of litoopDae-has b. pspaler in sons rubber. apjplie&M% ' notably.-in issffifeetssre of bags esploysd In. tire pneduetlesi. ' Sussolith Lithdaoaaa . / . .. . _ .... .. tto hare encountered th Suadlith grades rather toffregaastiy to now, at least. With the possible exception of one er two grades, we feel that our present series prorides adequate eeuatom&ches. . .CgantegBetohes A new table showing the current eeuntonsstobss ef Mamellth far ea^etitire 'grades has been prepared to replaee page lOB SatheLithaposse . Soaklet, Ps^er Mo. Mb. The Ffenslith series and Astrelith series ham been eUMhatsd since they are' no longer being nsimfactored. the Albalith ham bean retained, tsasaach as wa will be concerned .with than fra asm tins yet. C. H. Adaas, .- Mineral Product* Laboratory, "h" 0007-SWP-000006560