Back to results
US 2006/0223918 A1Published application
Hindered amine light stabilizers comprising neoalkanediol phosphites
AssigneeCrompton Corporation
InventorsMichael Gelbin, Carloss Gray
Life of this patent
Estimating the term…
Abstract
Disclosed herein are compounds of the structure: wherein R1, R2, R3, R4, R5, and R6 are independently selected alkyl groups, provided that R1 is different from R2. The compounds are useful as stabilizers for thermoplastic resins.
Claims20
A compound of the structure:
- wherein R1, R2, R3, R4, R5, and R6are independently selected alkyl groups, provided that R1 is different from R2.
A stabilized composition comprising:
- (A) a thermoplastic resin, and
- (B) a stabilizing amount of:
- (1) a compound having the structure:
- wherein R1, R2, R3, R4, R5, and R6 are independently selected alkyl groups, provided that R1 is different from R2 and, optionally,
- (2) a co-stabilizer selected from the group consisting of phenolics, aromatic amines, hydroxylamines, alkylamine-N-oxides, lactones, and thioethers.
2 more elements
A method for stabilizing a thermoplastic resin comprising adding to said resin a stabilizing amount of a stabilizer having the structure:
- wherein R1, R2, R3, R4, R5, and R6 are independently selected alkyl groups, provided that R1 is different from R2.
A method for the preparation of stabilizer having the structure:
- wherein R1, R2, R3, R4, R5, and R6 are independently selected alkyl groups, provided that R1 is different from R2 wherein the method comprises reacting a phosphorous trihalide with a tetraalkylpiperidinol and a 2,2-disubstituted propanediol.
Dependencies are inferred from the claim text.