Document BRznROE9OkXOwZDL5gm3JweEm

MARSHALL SALES BSmOPMMf iABOEATOlI s t a j s b a b b wcsmu^nm p e a o t i.c e h o . ?p -874 DATS 0? ISSUE? 3/9/60 - SUPERSEMIS I Sew 1,. DESCRIPTICM OF LIME.i'. (A) General Rescriptions The 674-Line of "Lucite"* baking enamels includes a fairly couplet rang of colors femulated for roilereoat. application to properly treated aluminum. Additional colors ar currently under development and eventually a full radge will be available* Film thickness is normally 0.8 to 1,1 mils. She major use of these enamels is for exterior use on aluminum for awnings and mobile homes, There .ar also other miscellaneous small volume end uses which require the balance of durability, formability .and resistance properties shown by these enamels, j # I f These enamels are usually applied as on coat systems, W@ anticipate that two coat systems will be feasible when a satisfactory primer is developed. Over some substrates,: principally treated steel, resistance properties are borderline, la these cases us of a primer' is preferred. A comparison of 874-Line with established rollercpating lines, such as 751~Line and 703-Line will, illustrate what can be expected propertywise fro these enamels. Cl) Durability - 874-Line is expected to be more durable than 751 and 703-L.ihesT TOEais based on accelerated weatherometer data and .related exterior durability data* (2) Formability - 874-Lin is definitely superior to 751-Line in all applications.' It Is slightly better than 703-Lin in. roll forming and. slightly poorer than 703"Line in impact forming, (3) Besistaiace Properties - 874-Line is approximately equal to 751 and 703-Idhes 'over' properly TMtreated aluminum. Over treated steels, 874-Line is inferior to 751 and 703-Lines .la salt spray and humidity cabinet performance, (41 Overbake Discoloration . 874-Xins la definitely superios5 to 751 and property. (5) Gloss and Appearance * 8?4-Line is .approximately equal to 751 and 703-Line,"' (6) Pressure Mottling - 874-Line Is approximately equal to 703Line .and sot- quite' as' good as 751"Line in this' property. The binder used in 874-Line is a combination of 0-393 (Rohm and Baas Acryloid B-32) 0-395 (Holm and Haas Acryloid AT-5Q), 70-5924 (Rpon Solution) and HF-lSo (Bi-S-ethylhessyli^thalat), 'The following ratio is maintained for all colors and pigat levelss Solids Basiss Q-393/0-395/70-59.24/HF-ie6 - .82,2/6,6/1.2/10.0 The function of the various binder components Is as follows? ) 0-393 * which Is the largest part of the binder* is an acrylic polymer and provtdes excellent durability1 along with the greatest contribution to tin other properties of the enamel. G-395 .and ?Cl-592,4r used to provide resistance to pressure mottling and sticking in the coil. HF-1S6 is present to improve faraafeillfy, As a general formulating guide it appear feasible to vary the formula amounts of these ingredi ents bf 5% to achieve the desired film properties, II' such, variations are made**'initial production should .be followed closely to be certain of the effect on the' total balance of properties and particularly on form-ability and pressure settling. Slow evaporating thinner are used in B74~hi to give the proper balance of stable application viscosity* flow-out* resistance to popping and evaporation rate at the comparatively short high temperature baking schedules employed in the strip coating industry. - 11, APPLICATION AID TBSTIHG: . A .hand -roller and automatic drawdown apparatus are used for the laboratory testing of 874"bine enamels. Color is controlled by automatic drawdown on solvent cleaned Alclad Aluminum ?TM-33B-*B). Gloss Is measured on a hand roiled film on solvent cleaned Alclad Aluminum (TH-359-A) ,, All other properties* including pitting are controlled by .hand rolling a film on Alodlsed Aluminum (&-359-A). If the enamel is too high in viscosity* T-B619 can be used to reduce to application viscosity in order to obtain the 1.0 to 1.1 mil film thickness for testing* In some cases it 'may.be ,f desirable or even necessary to test at much lower film thickness for some customers. These will have to be handled on an individual basis keeping in mind that these enamels .are at far'less than complete hiding in the white and pastel colors. .Other tests include Pencil Hardness 1M-23X; Impact TH-3S6-As Gloss SJ-204-Fj and where applicable Bleed Test If poor flow appears evident from a rollout* a check of the flocculation Index of the enamel should be carried out. If thie figure is greater than 1.5 reformulation of the enamel will be necessary. A flocculation index of 1.0 is considered best for good perfomance of the product. The 874-Idne. enamels are formulated to give satisfactory per formance at laboratory control bakes of 72.seconds 450F in' a GrieveHendry Oven. The gloss on B74~I>Xae White is do min.' @ 2Q angle. Enamels which contain large amounts of monastral oxide or black pigments will be 50 min. 20 angle. If there is any question concerning gloss., approvalshould be obtained from the Sales Region involved. III. FOMUIATlOHi Introductions S74~hime is formulated with a new line of mill bases* 903-Mne* in both the white and colors. Because of compatibility requirements, these are the only bases to be used in formulating the quality. Use of even trace amounts of other mill bases is apt to give Incompatibility difficulties evidenced by seeding -and/or low gloss. The 903-line bases employ G-393 (Acryloid B-S2) as the binder. Slow evaporating fchiciws H-601 (Solvesso 150) and H-79 C'Cellosolve acetate) are used to give the DUP030029258 FP--@74 tfege 3 3/9/60 ) desired iaxiaai flow water the relatively .shorty flash time sad high temperature bake condition existent during application* a . ^jgaessa&isa* (X) White enamels is $744ias ar formulated with MU43 rutile 7102 a Three levels of pigment to binder are shorn in the table varying from low to high hiding.> Performance characteristics and cost considerations will guide tit fobaulator in picking the proper pigiaea^ tation level, keeping in 'mind the fact that increased pigmentation will lower flexibility performance. ' The pigment levels given in the table for colors are staxi- mm levels consistent with obtaining satisfactory durability, gloss sad appearance, Pigmentation levels may vary fro those suggested in the foriral&tlng tables based on performance requirements and cost consider ations, Sine most formulations will fee complex blends of. colors whose hiding characteristics cannot be estimated in advance, it will fee the foraulators responsibility to insure that a@X developments.have proper biding for the intended end use* Tli@ pigmentations used in d74-&le should conform to the recommendations'of PP-8S5 with the following exceptionss |1) Mo bleeding pigat3 except -612 should fee uaed,, i (2) Monastral pigments while yielding durable enamels may give' too low a gloss in ro.llereoating enamels. B. Mill tea Formulations Mill bases are formulated for w47 Process'1 .dispersion, -90: line mi'll base formulations are recommended as starting compositions with respect to ratio of pigment to binder. In most oases they will fee satis factory after minor adjustment. In .the 903-klne bases FS-56H6 (40$ solid: solution of 0-393 in H-60.1/H-79 - 3/1) will be substituted for the laequa vehicle used in 901-Mne, H-601/8-79 - 3/1 should be used- for viscosity reduction to. 9P3Line bases. CB' Vehicle and Thianereg The binder in #74-Mn@ consists of the following, 0-56$6 (G-393 Acrylic - 40$ solids in H-6QX/B-79 - 3/1), G-395 (Thermosetting Acrylic 50$ solids), G-~5924 (Spon Solution 50$ Solids) aad EF1#6 (di~ 2~ethytoexylphth&Xate plasticiser). Bates components are'blended .in the following ratio to give the proper balance of pressure mottling resist&aei &n& flexibility: Solids basis tU393/tk395/TO*>5924/K?-l66' * $2.2/6.6/i.2/ 10, As pointed. ufTTSsTasi. iSFXiar .section^.' variations up to 5$ of the formula weight of those Ingredients can' fee made, to adjust film properties Mhen this is 'stones Initial production must, be followed to detesmine the effect on ..film,properties/-hatii:'.we have adequate background information of the effect ; these' formuia^Lng'' variables production lines. The;.recoffiBaended thinner for d74-Idi i^^T-8619, The flash point of.874iin is +60L. 32-5979, a-'Fplymefeon wax dispersion in H-1.2, is used -in amounts of 0.25 to Q,,87% based on vehicle solids to impart ear and block- DUP030029259 fabrication of tins finished products. Page 4 3/9/60 E, fiscosityi Package viscosity can be varied to suit the iiKlIvfclml customer; however, most products are packaged at #15c 23 to 27*. Settling properties should be checked on enamels packaged at significantly lower. Viscosities. X,, PQKMUL&TXMQ TABLES; Formulating tables for 8?k--Lin enamels are set up as part of this practice,. They are intended as a guide. P/B ratios,, resin balances, and thinner content may fee varied if so seeded, but it is the fornulaior's responsibility to insur proper package stability, flow, film properties, etc. V, MMWACWBXMB PROBLEMS; Car should be taken to Insure that the constituents of each formulation are added in the order specified, and mixed as directed on the formula card. The exact amount of 32-5979 should be added as specified on the formula. **"* ... ....... ...- "mw . SS.&V4A OWU V'*'**'*-* pww,TO( Tinting bases which appear in the quantities of: 0 ~ h-% may vary 50% 4.1 15.56 may vary 20% 15.1 *> 50% may vary 10% 50l- 100% may vary 5% A trace of tinting may be oaifctad without Laboratory approval VX. EEAS01 FOR ISSUE lew SALES BEWmOPMEMT LAB0BATQR7 If. .M.LP1I DUPQ30029260 f" ..0 4- 403 |> a0 (p94 O 4u4 .uid O 03 u O ffit .ugt *aSSr53i cB tS fl| (S 63 Cl <-4 fX tl i .0 43 *> ffl Q* (8 93 as <*> s 0145 *r{ r-4'aVs4 Cahs !>.> .> <8ff . C*I3Sl_*C3 *3 .03 irt S83 *J 63 Xi (IS v4 *H -pi *p$ <* 4i4 %{ ft Ch X* jcSjC*irf'rt*rl>H43*HxS Xl M .4^ W M 8sg M M Sjg M 8b Ml Ol t--3 $--1 m &$ 1--1 6"^ f? 374-LIME FORMULATING TABLE BASIS 100 LBS, OF MILLBASE AMD LBS. Of INTERMEDIATES TO GIVE nESIRBB P/B RATIO Whites hav 0 ,2 5 ^ m&x and c o lo rs 0.37)6 wax, based on M n d rs cO^'croM^#\wc mtos>so^<c-anntonvconminvww sfoAc<mn s tmoein-- ss gS 0NiO--s Q--ttOBOCK N(>avt0tot o 0 O 090 s oOH oOp-4 toQ-4 Oor~j oOi--| oOi~J OoH Ooj --8OoHIOojrrtOoj-4Oop-IOofl oo oooo oooo 0C33 WC^*\C03\r MACIMftlCAM O' \OIAOlAOM\rN4N\lHA CoN C"M.'IR tON-OrM Q S>*CM o O O O o O O r~S o (A 9090 0000 53 909 oo wa\f-fe vO iH 3 gJ-tsO&rt-ti ^OMW3WH S^N^H pO iOn. 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