Flame resistant starch-sulfamate products

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524 52, 260DIG24, C08L 300, C08J 302

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active

045529183

ABSTRACT:
Gelatinized starch is reacted with sulfamate at elevated temperature in an aqueous medium to give a flame resistant starch-sulfamate product. Suitable sulfamates include alkali-sulfamates and alkaline earth sulfamates. The amount of sulfamate used can be in the range of 3 to 40 percent by weight, based on starch dry substance. Minimum water content of the reaction mixture is about 30 percent by weight. Reaction temperatures are from about 40.degree.-250.degree. C. The starch-sulfamate products are useful as fillers, thickeners and binders, among other things.

REFERENCES:
patent: 2142116 (1939-01-01), Cupery
patent: 4139699 (1979-02-01), Hernandez et al.
patent: 4339491 (1982-07-01), Lauterbach et al.

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