C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 25/04 (2006.01) C08J 9/04 (2006.01) C08K 5/5357 (2006.01)
Patent
CA 2698602
Expanded styrenic polymers contain 1 to 20% by weight of one or more aromatic polyphosphonate compounds corresponding to the following structure I :wherein a and b are each from 0 to 6, with a + b being from 2 to 6, each R is independently hydrogen, unsubstituted or inertly substituted alkyl having up to 6 carbon atoms, -NO2, -NR1 2,- C.ident.N, -OR1, -C(O)OR1, or -C(O)NR1 2 (wherein R1 is hydrocarbyl or hydrogen), each R2 is independently hydrogen, alkyl or inertly substituted alkyl, each R3 is a covalent bond or a divalent linking group, and each R4 is independently an alkyl, aryl, inertly substituted alkyl or inertly substituted aryl group. The aromatic polyphosphonate compounds are effective FR additives for the expanded polymers.
L'invention concerne des polymères styréniques expansés contenant 1 à 20 % en poids d'un ou plusieurs composés polyphosphonates aromatiques correspondant à la structure I suivante : dans laquelle structure a et b vont chacun de 0 à 6, a + b allant de 2 à 6, chaque R est indépendamment un hydrogène, un alkyle non substitué ou substitué de façon inerte ayant jusqu'à 6 atomes de carbone, -NO2, -NR1 2, -C=N, -OR1, -C(O)OR1 ou -C(O)NR1 2 (où R1 est un radical hydrocarboné ou un hydrogène), chaque R2 est indépendamment un hydrogène, un alkyle ou un alkyle substitué de façon inerte, chaque R3 est une liaison covalente ou un groupe de liaison divalent et chaque R4 est indépendamment un groupe alkyle, aryle, alkyle substitué de façon inerte ou aryle substitué de façon inerte. Les composés polyphosphonates aromatiques sont des additifs ignifugeants efficaces pour les polymères expansés.
Kruper William John
Romer Duane Ronald
Shankar Ravi B.
Stobby William Gerald
Wilson David R.
Dow Global Technologies Inc.
Dow Global Technologies Llc
Smart & Biggar
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