ATLAS
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ATLAS]
CHEMICALS DIVISION ATLAS POWDER C O M P A N Y , WILMINGTON 99, DELAWARE ATLAS POWDER C O M P A N Y , C A N A D A , LTD., BRANTFORD, O N T A R I O , C A N A D A
M A K I N G A L K Y D RESINS? Try sorbitol for unique effects
The removal of heavy soil from collars, cuffs, and other areas has long been a problem in laundering. Even though these areas may look reasonably clean when the garment has been washed only a few times, the soil "builds u p " after a series of washings until it is almost im possible to remove.
B y using sorbitol as p a r t of t h e polyol c o n t e n t , ^ p a i n t c h e m i s t s h a v e produced interesting improvements in t h e c h a r a c t e r i s t i c s of n u m e r o u s a l k y d resins. A t y p i c a l example is a s h o r t , oxidiz ing t y p e , soya-oil-modified a l k y d for use in nitrocellulose l a c q u e r s , w i t h u r e a or m e l a m i n e resins, or a l o n e . T h i s resin is o u t s t a n d i n g in speed of d r y (or b a k e ) , h a r d n e s s , gloss a n d gloss r e t e n t i o n , a n d h a s excellent alkali resistance, d u r a b i l i t y , a n d adhesion.
T W O New
T h e cooking f o r m u l a is as follows: AM ^
Soya Oi!
372
Phth3licy\nhydride . . . SORBITOL (Dry Basis)
401 .
149
Glycerol (Dry Basis). . .
149
Litharge Total
0.8 . . . . . . .
Yield
1072 1000
PROCEDURE: (1) Take all oil and glycerol to 235-240° C. and hold y4 hour. (2) Add SORBITOL and phthalic anhydride. (3) Gain 220° C. and hold about 3 hours for acid number and viscosity.
Sorbitol is a v a i l a b l e in h i g h - p u r i t y pellets o r 7 0 % a q u e o u s solution, as a low-cost i n g r e d i e n t for s y n t h e s i s . I t s p r i c e has s h o w n a s t e a d y d o w n w a r d t r e n d for b e t t e r t h a n 16 y e a r s . I t is a v a i l a b l e in a m p l e s u p p l y , a n d is p r a c t i c a l l y shortage-proof. W r i t e for t h e b o o k l e t , " S o r b i t o l R e s i n s , " which gives f o r m u l a s , cook ing p r o c e d u r e s a n d c h a r a c t e r i s t i c s of several s o r b i t o l - b a s e d a l k y d s a n d rosin esters. 790
C&EN
FEB.
2 0,
1956
Renex® 20 compounds for spot removal in laundering
^
Μ,
χ
Glycerol C—
Ι
*Χ·
i r i o n o S r c u f u f c bfHUlSIfΙΘΓο A t l a s is now offering cosmetic chem ists two new A R L A C E L ® glycerol m o n o s t e a r a t e emulsifiers (non-selfemulsifying) . . . for e v a l u a t i o n in c r e a m s , lotions, lipstick, shampoos, a n d hairdressings. T h e y are m a n u f a c t u r e d in t h e new A t l a s p l a n t a t M e m p h i s . . . t h e w o r l d ' s largest fa cility for p r o d u c i n g monoglycerides. Processed under latest q u a l i t y con t r o l t e c h n i q u e s , these emulsifiers offer exceptionally high s t a n d a r d s of p u r i t y a n d uniformity t o m e e t the m o s t exacting d e m a n d s of t h e cos metic and pharmaceutical industry. A R L A C E L 161 has a m o n o e s t e r con t e n t of 40 to 4 4 % . A R L A C E L 169 is a
special grade with 6 1 - 6 6 % monoester c o n t e n t , u n i q u e in this i n d u s t r y . I t offers o p p o r t u n i t i e s for i m p a r t i n g new effects. W r i t e to Atlas for technical d a t a a n d samples for test.
Joint research by Atlas and the Textile Fibers Department of E. I. du Pont de Nemours & Co. (Inc.) shows t h a t Renex 20 synthetic organic detergent, made by Atlas, is an excellent "spotting agent" for use not only on fabrics of man-made fibers, but also on cotton. Applied to dry fabric, followed by nor mal washing, Renex 20 gave 3 to 4 times as much cleaning as a regular wash with a good "built detergent." It also gave about 3 times as much cleaning as with a toilet bar soap used in the same way! Repeated soiling and washing showed no "build u p " of soil when Renex 20 was used for spotting. The most effective method of applying - the spotting agent is to place the fabric on soft backing, such as a towel, and then gently rub the agent into the soiled area with a hard edge, such as the edge of a spoon handle. Renex 20 (polyoxyethylene derivative of mixed fatty and resin acids) is offered to specialty manufacturers for com pounding and packaging in tubes, spray containers, or squeeze bottles. Guide formulas, as well as comparative tests of Renex 20 with other materials are shown in the paper "Spotting Agents for AYashable Fabrics," by Dr. H. E. Stanley of du Pont, and M. E. Davis, of Atlas, available from Atlas on request (reprinted from presentation at Decem ber 1955 meeting of the Chemical Spe cialties Manufacturers Association). A technical bulletin on Renex 20 and trial samples are also available.
