EP0227948A2
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EP
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Improved phosphite stabilizer compositions
Assignee: GE Specialty Chemicals Inc
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Filing: 1986-11-25
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Granted: —
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Expires: 2006-11-25
Abstract
Abstract Described are improved phosphite stabilizer compositions.
Inventors
- 👤 William E. Horn, Jr.
- 👤 Wesley C. Ray
- 👤 Leo L. Valdiserri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 04:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526; C08L; C08L23/00; C08L23/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
22 words
A stabilizing composition for polyolefins comprising l00 pbw of a tris-alkylphenyl phosphite and from l to 55 pbw of a dialkyl thiodipropionate.
Claim 2
Dependent Claim
22 words
A stabilizing composition for polyolefins comprising l00 pbw of a tris-alkylphenyl phosphite and from l to 55 pbw of a dialkyl thiodipropionate.
Claim 3
Dependent Claim
13 words
The composition of Claim l wherein said trisalkylphenyl phosphite is a tris-dialkylphenyl phosphite.
Claim 4
Dependent Claim
12 words
The composition of Claim l wherein said trisalkylphenyl phosphite is tris-(2,4-di-t-butylphenyl) phosphite.
Claim 5
Dependent Claim
21 words
The composition of Claim l wherein each alkyl moiety of said dialkyl thiodipropionate has about l0 to about 20 carbon atoms.
Claim 6
Dependent Claim
21 words
The composition of Claim 4 wherein said alkyl moiety is selected from the group consisting of C₁₂ to C₁₈ alkyl moieties.
Claim 7
Dependent Claim
20 words
The composition of Claim 5 wherein said dialkyl thiodipropionate is selected from the group consisting of dilauryl and ditridecyl thiodipropionates.
Claim 8
Dependent Claim
23 words
The composition of Claim l comprising l00 pbw of tris-(2,4-d-t-butylphenyl) phosphite and from about 5 to about 45 pbw of a dialkyl thiodipropionate.
Claim 9
Dependent Claim
11 words
The composition of Claim l further comprising a hindered phenolic compound.
Claim 10
Dependent Claim
20 words
The composition of Claim 8 wherein said hindered phenolic compound is an alkyl ester of a (dialkyl hydroxyphenyl) propionic acid.
Claim 11
Dependent Claim
17 words
l0. The composition of Claim 9 wherein said hindered phenolic compound is 3(3,5-di-t-butyl-4-hydroxyphenyl) propionic acid, octadecyl ester.
Claim 12
Dependent Claim
25 words
A polyolefin composition comprising a polyolefin and an effective amount of a stabilizer mixture comprising l00 pbw tris-alkylphenyl phosphite and from l-55 pbw dialkyl thiodipropionate.
Claim 13
Dependent Claim
25 words
A polyolefin composition comprising a polyolefin and an effective amount of a stabilizer mixture comprising l00 pbw tris-alkylphenyl phosphite and from l-55 pbw dialkyl thiodipropionate.
Claim 14
Dependent Claim
13 words
The composition of Claim ll wherein said trisalkylphenyl phosphite is a tris-dialkylphenyl phosphite.
Claim 15
Dependent Claim
12 words
The composition of Claim l2 wherein said trisalkylphenyl phosphite is tris-(2,4-di-t-butylphenyl) phosphite.
Claim 16
Dependent Claim
12 words
The composition of Claim ll wherein said dialkyl thiodipropionate is dilauryl thiodipropionate.
Claim 17
Dependent Claim
11 words
The composition of Claim ll, further comprising a hindered phenolic compound.
Claim 18
Dependent Claim
20 words
The composition of Claim l5 wherein said hindered phenolic antioxidant is an alkyl ester of a (dialkyl hydroxyphenol) propionic acid.
Claim 19
Dependent Claim
16 words
The composition of Claim l6 wherein said hindered phenolic antioxidant is 3(3,5-di-t-butyl-4-hydroxyphenyl) propionic acid, octadecyl ester.
References Cited (Backward Citations)
No citation records indexed.
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