Document 0eLeGodYbj37x8OaOqbELZ3R

TECHNICAL BULLETIN UNITED SIERRA DIVISION CYPRUS M INES CORPORATION B O X 1 20 1 T R E N T O N N.J. - ( 8 0 9 ) 8 0 3 - 5111 THE USE O F BEAVERWHITE 325 IN INTERIOR AND EXTERIOR FLAT LATEX PAINTS The T ec h n ical S erv ice L a b o r a to r ie s of UNITED SIERRA have evaluated one of our Montana T alcs, BEAVERWHITE 325 v e r s u s a 325 MeBh New York State Talc in e x t e r i o r and i n t e r i o r flat latex paint formulations. The r e s u l t s of that evalu atio n show BEAVERWHITE 325 to be equivalent to the New York Talc in both form ulations. The e x te rio r latex form ulation was based on a label analysis of a m a jo r paint p r o d u c e r 's latex house paint. According to the label, the following information is shown: Pigment by Weight Vehicle by Weight 3 9% 61% 100% Composition of Pigm ent by Weight: Titanium Dioxide Zinc Oxide Silicates (Talc) 52% 11% 3 7% 100% Composition of Vehicle by Weight: * Latex Soya Alkyd Resin Water Synthetic Latex, non-volatile Volatile Water 62% 8% 30% 100% 36% 64% 100% PVC = Approx. 47% Volume Solids = A pprox. 33% The r e s u l t s of the evaluation of BEAVERW HITE 325 v e r s u s 325 Mesh New York State Talc in this form ulation follows: lulletin FP5 EXHIBIT CAM-375 SW Goodhue 000212 Page 2 Paint Made With BEAVERWHITE 325 Contrast Ratio: 1.5-Mil Bird 3. 0 - M i l B i r d . 95 (Equal) . 98 (Equa 1) Luminous Reflectance (Green Filter) 89% (Equal) Yellowness Index 3.0% (Equal) Sheen (85% Gloss) 4 (Equal) K&N F i l m P o r o s i t y T o s t * 22% (SI. B e t t e r ) Paint Made With 325 M e s h N. Y . S t a t e T a l c . 95 . 98 89% 2. 9% 4 25% #This is a te st rela tiv e ly new to the paint in d u s tr y that gives a good indication of enam el hold-out, film porosity, and stain resistance. The data shows BEAVERWHITE 325 to be co m p arab le to New York Statu Talc in this formulation. S im i la rl y , BEAVERWHITE 325 was evaluated r e l a t i v e to 325 M esh New York State Talc in the 62% PVC polyvinyl a c e t a t e c o p o ly m e r i n t e r i o r la tex flat wall paint formulation shown below: AB Water 450 450 Cello size Q P -44 00 5. 8 5. 8 Tamol 731 12 12 Pluronic L-62 22 Nopco NDW 22 Ethylene Glycol 15 15 Troyson PMA-30 .3 ,3 Titanox RA-50 200 200 BEA V ER W H ITE 325 200 -- Nytal 300 -- 205 Imsil A-25 75 75 P o ly v i n y l A c e t a t e C o p o l y m e r (55%) 210 210 Carbilol Acetate 10 10 The evaluation again proved BEAVERWHITE 325 to be co m p arab le for all properties tested: SW Goodhue 000213 Page 3 Contrast Ratio (3-Mil Bird) Luminous Reflectance Yellowness Index Sheen (85% Gloss) Burnish Resistance* (A sheen) K&N F ilm P o r o s i t y T e s t (Loss of Reflectance) Scrub Resistance^ Paint A BEAVERWHITE 325 . 972 88. 9% 3. 6% 3 2 0. 9% (Equal) (Equal) (Equal) (Equal) (Equal) (Equal) Equal to Control Paint B 325 M e s h N. Y. State T al c . 972 89. 0% 3. 6% 3 1 0. 9% Control (1) I n c r e a s e in s h e e n a f t e r 50 c y c l e s on a G a r d n e r S c r u b machine using dry cheesecloth, (2) P e r f o r m e d on a G a r d n e r S c r u b m a c h i n e u s i n g wet cheesecloth and Ajax Cleanser. As an added incentive for the cost-conscious paint form ulator to use United S i e r r a ' s products, we also offer a lower b r ig h tn e s s v e r s io n of BEAVERWHITE 325 a t c o n s id e ra b le cost savings, This product is known a s GLACIER 325, The u s e of GLACIER 325 in latex paints will slightly lower their reflectance and whiteness when com pared to BEAVERWHITE 325, but the economic advantages it offers m a y outweigh the slight co m p ro m is e of w hiteness. The following table c o m p a r e s the G en eral E l e c tr i c B r ig h tn e s s (GEB) of BEAVERWHITE 325, GLACIER 325, Nytal 300 and A sb estin e 325 with paint r e f l e c t a n c e , y e l lo w n e s s index and w h i t e n e s s index in a 30% PVC, 35% Volume Solids A c r y lic Latex F o r m u la tio n pig m en ted with 50/50 TiOg/ talc by volume: Yellowness Whiteness GEB Reflectance Index Index BEAVERWHITE 325 GLACIER 325 Nytal 300 A sb estin e 325 91 83 92 91 93.2% 92. 1% 93. 3% 92. 5% 1.2 88.8 2. 9 8 1 .7 1.6 87. 7 2. 0 85. 3 F o r m an y types of fo rm u la tio n s GLACIER 325 would be suitable, es p ecially in view of its p r ic e advantage over BEAVERWHITE 326. P e r h a p s , you_ sh ould be u s i n g B E A V E R W H I T E 325 or it s low p r i c e d c o u n t e r part, GLACIER 325, in your latex paint formulations. The data in this bro Imre arc based upon actual experimental work and are believed to be reproducible. However, no guarantee is made that the results as shown will be obtained, SW Goodhue 000214