Multipurpose polymer bound stabilizers

Details Multipurpose polymer bound stabilizers Multipurpose polymer bound stabilizers

C - Chemistry, Metallurgy

08

F

402/3, 402/364

C08F 8/30 (2006.01) C08F 8/34 (2006.01)

Patent

CA 1336527

Polymer bound stabilizer compounds are provided in which two or more different classes of stabilizers are chemically bound to anhydride containing polymers or copolymers. The polymeric stabilizers are prepared by the reaction of primary amino or hydrazido substituted stabilizers (i.e., antioxidants, light stabilizers, etc.) with some or all of the anhydride groups of the polymer or copolymer to form pendant stabilizer substituted imide or amic acid groups. The polymer bound stabilizers are not lost from the polymer system by volatilization, migration or extraction, even at high temperatures. The polymer bound stabilizer compounds may be used as concentrates to stabilize other polymer systems.

567035

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