SUMSTART First commercially available polymeric
dialdeiiyde
H-CH I CHO
1 CH2OH
This unique new source of aldehyde groups gives you an infinite range of cross-linking possibilities SUMSTAR is our tradename for the first poly meric dialdehyde ever offered commercially. S U M S T A R opens up limitless possibilities for new products and modifications of your present products. A wide variety of materials, both syn thetic and natural, can be cross-linked to varying degrees using SUMSTAR. Originally developed by She U.S.D.A.'s Northern Utilization Research and Development Division, the process has been adapted for manu facture by Miles Chemical Company. SUMSTAR can be described as a polymeric dialdehyde produced by the oxidation of corn starch. The highly specific periodate ion breaks the carbon-to-carbon bond between C2 and Ο of the anhydroglucose units of the starch molecule forming two aldehyde groups. The extent of oxi dation is carefully controlled. Currently we offer three grades as indicated below. SUMSTAR is a fine powder, nonvolatile, and virtually odorless. Its acute toxicity is only a small fraction of that of other commercially available aldehydes. Here are the specifications: S U M S T A R - S . . . over 90% oxidized S U M S T A R - R. . . 75-80% oxidized S U M S T A R - J . . . 50% oxidized W a t e r Content: Less than 10%
SUMNER
A
Heavy Metals: Average less than 10 p.p.m. S u l f a t e d Ash: l % - 2 % B u l k Density: 45 to 55 ml./oz.
Unusually versatile SUMSTAR is so new that the full range of its usefulness is still being deter mined. However, work in progress indicates ex cellent possibilities in: a d h e s i v e s — for laminates l e a t h e r — tanning
t e x t i l e s — crease resistance and waterproofing p l a s t i c s — n e w polymers p a p e r — increase in wet strength
Current information on S U M S T A R is now available in our bulletin No. 6-129 which we will be pleased to send you. Samples are available upon request, and production in pilot plant quantities is now under way. Full-scale commer cial p r o d u c t i o n will, of c o u r s e , p e r m i t price reductions which will make SUMSTAR a re markably low-cost polymer with high aldehyde content. Coming soon: bisulfite, urea, and meiamine derivatives. Bulletin and samples For Miles bulletin No. 6-129 and sample quanti ties, write, wire, or call us.
Miles Clieixiicol Company CHEMICALS
DIVISION O F M I L E S L A B O R A T O R I E S , INC., E L K H A R T , I N D I A N A General S a l e s O f f i c e : E l k h a r t , I n d i a n a , T e l e p h o n e J A c k s o n 3 - 1 1 3 0 or C l i f t o n , N e w J e r s e y — P R e s c o t t 9 - 4 7 7 6 o r New Y o r k - M U r r a y Hill 2 - 7 9 2 0 W e s t C o a s t A g e n t : B. W H o l m e s , L a C a n a d a , C a l i f o r n i a — M U r r a y 1 - 5 7 2 3
