Stabilizers for polymers containing aliphatically-bound bromine

Details Stabilizers for polymers containing aliphatically-bound bromine Stabilizers for polymers containing aliphatically-bound bromine

C - Chemistry, Metallurgy

08

K

C08K 5/00 (2006.01) C08K 5/1515 (2006.01) C08K 5/524 (2006.01) C08L 9/06 (2006.01) C08L 25/04 (2006.01) C09K 21/14 (2006.01)

Patent

CA 2747386

Aliphatic bromine-containing polymers are stabilized using a mixture of an alkyl phosphite and an epoxy compound. This stabilizer package is very effective at preventing cross-linking reactions from occurring when the aliphatic bromine-containing polymer is subjected to high temperatures as are seen in melt processing operations. The stabilized aliphatic bromine-containing polymer is useful as a flame retardant for other polymers, notably polystyrene foam.

L'invention concerne des polymères contenant du brome aliphatique qui sont stabilisés en utilisant un mélange d'un phosphite d'alkyle et d'un composé époxy. Cet ensemble stabilisant est très efficace pour empêcher que se produisent des réactions de réticulation lorsque le polymère contenant du brome aliphatique est soumis à des hautes températures, comme on en observe dans les opérations de transformation en fusion. Le polymère contenant du brome aliphatique stabilisé est utile comme ignifugeant pour d'autres polymères, notamment une mousse de polystyrène.

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