Additive combination for sealants applications

摘要

The present invention pertains to an additive combination comprising at least two sterically hindered amines, at least one further stabilizer, a dispersing agent and a plasticizer. The present invention also pertains to a composition comprising an organic material susceptible to degradation by light, oxygen and/or heat, and the additive combination and to the use and the process for stabilizing organic material against degradation by light, oxygen and/or heat by the additive combination.

主权项

1. A composition comprising:
(A) at least two sterically hindered amines selected from the group consisting of a compound of formula (A-i), a compound of formula (A-ii), a compound of formula (A-iii), a compound of formula (A-iv), and a compound of formula (A-v); (B) at least one of a compound of formula (B-i) or formula (B-ii); (C) at least one dispersant of formula (C-i); and (D) at least one plasticizer (D); and, optionally, (E) at least one non-resin additive (E), and/or, optionally, (F) at least one resin (F);
wherein sterically hindered compounds of formulas (A-i), (A-ii), (A-iii), (A-iv) and A-v) are described by the following chemical structures: where a ranges from 2 to 50;R—NH—(CH2)3—N(R)—(CH2)2—N(R)—(CH2)3—NH—R, wherein R is wherein the compounds of formulas (B-i) and (B-ii) are described by the following chemical structures: wherein the dispersant of formula (C-i) is described by the following chemical structure: where R1 is —(CH2—CH2—O)r—R5, wherein r ranges from 2 to 100, and R5 is branched C1-C18alkyl or linear C1-C18alkyl; R2 is linear C8-C20alkyl or branched C3-C20alkyl, R3 is C6-C12aryl, di-C1-C4dialkyl-aminoC2-C6alkylene, or C2-C12aminoaryl having 1 to 3 ring-nitrogen atoms, wherein an aryl group and an aminoaryl group are unsubstituted or substituted by C1-C4alkyl, R4 is H or CH3, n and q are independently integers from 3 to 100, and m and p are independently integers from 0 to 100.