Patent EA-000042-B1 (EA)
Title: Polymer composition, method of thermoplastic resin stabilizing and stabilizer composition
Inventor: PRABHU VAIKUNTH S
IPC: C08L101/00
Filed: 1996-09-24
Abstract: 1. Polymer composition containing thermoplastic resin, and stabilizer present at a level of from 0.001 to 5 percent by weight, based on the total weight of the composition, wherein the amine oxide has the structural formula:   wherein R1, R2 and R3 are independently selected from alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkcycloalkyl and cycloalkalkyl and each have from I to 36 carbon atoms per group, provided that if one of R1, R2 and R3 is an alkyl group having from 6 to 36 carbon atoms per group, then the other two of R1, R2 and R3 cannot both be alkyl groups having from 1 to 5 carbon atoms per group. 2. The thermoplastic composition of Claim 1 wherein said amine oxide is present at a level of from 0.005 to 2 percent by weight based on the total weight of the composition. 3. The thermoplastic resin composition of Claim 1 wherein said amine oxide is present at a level of from 0.05 to 1.0 percent by weight based on the total weight of the composition. 4. The thermoplastic resin composition of Claim 1, wherein said hydrocarbon amine oxide is represented by the general formula   wherein R1, R2 and R3 are independently selected from substituents having 1 to 22 carbon atoms. 5. The thermoplastic resin composition of Claim 1, wherein said amine oxide is tridodecyl amine oxide. 6. The thermoplastic resin composition of Claim 1, wherein said amine oxide is trihexadecyl amine oxide. 7. The thermoplastic resin composition of Claim 1, wherein said amine oxide is tri(C12-C14) amine oxide. 8. The thermoplastic resin composition of Claim 1, wherein said amine oxide is a di(C12-C14 alkyl) methyl amine oxide. 9. A method for stabilizing a thermoplastic resin, said method comprising: admixing an amine oxide with the thermoplastic resin, said amine oxide having the structural formula:   wherein R1, R2 and R3 are independently selected from alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkcycloalkyl and cycloalkalkyl and each have from 1 to 36 carbon atoms per group, provided that if one of R1, R2 and R3 is an alkyl group having from 6 to 36 carbon atoms per group, then the other two of R1, R2 and R3 cannot both be alkyl groups having from 1 to 5 carbon atoms per group. 10. A stabilizer composition consisting essentially of an amine oxide having the structural formula:   wherein R1, R2 and R3 are independently selected from alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkcycloalkyl and cycloalkalkyl and each have from 1 to 36 carbon atoms per group, provided that if one of R1, R2 and R3 is an alkyl group having from 6 to 36 carbon atoms per group, then the other two of R1, R2 and R3 cannot both be alkyl groups having from 1 to 5 carbon atoms per group, and a stabilizer selected from the group consisting of phosphites, phenolics and hindered amines. 11. The stabilizer composition of Claim 10, wherein said amine oxide is present at a level of from 5 to 95 percent by weight based on the total weight of the stabilizer composition. 12. The stabilizer composition of Claim 10, wherein said amine oxide is present at a level of from 25 to 75 percent by weight based on the total weight of the stabilizer composition.