Char-forming polymer compositions

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260DIG24, 526 3, C08K 541

Patent

active

040382451

ABSTRACT:
Esters of the formula: ##STR1## wherein R is an n-valent tertiary hydrocarbyl radical or an inertly substituted n-valent tertiary hydrocarbyl radical, promote char formation in polymer compositions containing a monovinylidene aromatic monomer, such as styrene, and an ethylenically unsaturated carboxylic anhydride, such as maleic anhydride.

REFERENCES:
patent: 3346612 (1967-10-01), Hansen

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