The invention provides a synthetic resin stabilizer whose effective ingredient comprises a mixture of (I) at least one phenolic compound represented by the general formula:
wherein R, is hydrogen, an alkyl group having 1 to 4 carbon atoms or an acyl group having 1 to 5 carbon atoms, and n is an integer from 1 to 4, and (II) at least one sulfur-containing compound selected from compounds represented by the general formulae (11-1) and (11-2):
wherein R2 is an alkyl group having 4 to 20 carbon atoms, and
wherein R3 is an alkyl group having 3 to 18 carbon atoms, and R4 and R5 are selected independently from hydrogen and alkyl groups having 1 to 6 carbon atoms. The compounds (I) wherein n is 1 to 3 are novel. The stabilizer is useful for improving the stability to heat, light or oxygen of a wide range of synthetic resins, including polyolefins and particularly polypropylene.
Stabilization of polyether polyols, polyester polyols and polyurethanes
申请人:Mäder Dietmar
公开号:US20070185250A1
公开(公告)日:2007-08-09
Polyether polyols, polyester polyols or polyurethanes which possess outstanding stability to oxidative, thermal or light-induced degradation and which possess a reduced fogging contribution of the polymers comprise at least a liquid compound of the formula (I) wherein R
1
is C
1
-C
4
alkyl, R
2
is a branched C
12-
C
25
alkyl, and X is C
1
-C
8
alkylene or C
1
-C
4
alkyl substituted C
2
-C
8
alkylene.