Patent US3907932A successfully refreshed from Google Patents.
US3907932A
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Color stabilization of nitrile-containing polymers with organotin compounds
Assignee: Standard Oil Co
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Filing: 1974-07-11
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Granted: 1975-09-23
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Expires: 1994-07-11
Abstract
Abstract A polymer composition containing a high proportionate amount of olefinic nitrile is stabilized against thermal discoloration by inclusion therein from about 0.05 to 2 parts by weight per hundred parts of resin of an organotin maleate compound selected from the group consisting of the hydrocarbon tin maleates and the hydrocarbon tin-bis-maleate half esters.
Inventors
- 👤 Alice W Kennedy
- 👤 Raymond S Shank
- 👤 Jr Eddie Wardlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:16
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
1 words
STYENE.
Claim 2
Dependent Claim
1 words
STYENE.
Claim 3
Dependent Claim
43 words
A POLYMER COMPOSITION STABLE TOWARD THERMAL DISCOLORATION CONTAINING FROM ABOUT 0.05 TO 2.0 PARTS BY WEIGHT OF AN ORGANOTIN MALEATE COMPOUND PER HUNDRED PARTS OF RESIN. WHEREIN SAID ORGANOTIN MALEATE IS SELECTED FROM THE GROUP CONSISTING OF THE DIALKYLTIN MALEATES HAVING THE FORMULA
Claim 4
Dependent Claim
43 words
A POLYMER COMPOSITION STABLE TOWARD THERMAL DISCOLORATION CONTAINING FROM ABOUT 0.05 TO 2.0 PARTS BY WEIGHT OF AN ORGANOTIN MALEATE COMPOUND PER HUNDRED PARTS OF RESIN. WHEREIN SAID ORGANOTIN MALEATE IS SELECTED FROM THE GROUP CONSISTING OF THE DIALKYLTIN MALEATES HAVING THE FORMULA
Claim 5
Dependent Claim
29 words
The polymer composition in claim 1 wherein the organotin maleate compound is di(n-octyl)tin maleate polymer, having the formula: ((C8H17)2SnC4H2O4)x wherein x is an integer of from 2 to 4.
Claim 6
Dependent Claim
5 words
an ester having the structure
Claim 7
Dependent Claim
5 words
an ester having the structure
Claim 8
Dependent Claim
5 words
AN ESTER HAVING THE STRUCTURE
Claim 9
Dependent Claim
5 words
AN ESTER HAVING THE STRUCTURE
Claim 10
Dependent Claim
5 words
an ester having the structure
Claim 11
Dependent Claim
5 words
an ester having the structure
Claim 12
Dependent Claim
5 words
an alpha-olefin having the structure
Claim 13
Dependent Claim
5 words
an alpha-olefin having the structure
Claim 14
Dependent Claim
16 words
The polymer composition in claim 1 wherein the organotin maleate compound is dibutyl tin maleate, (C4H9)2SnC4H2O4.
Claim 15
Dependent Claim
5 words
AN ALPHA-OLEFIN HAVING THE STRUCTURE
Claim 16
Dependent Claim
5 words
AN ALPHA-OLEFIN HAVING THE STRUCTURE
Claim 17
Dependent Claim
5 words
an alpha-olefin having the structure
Claim 18
Dependent Claim
5 words
an alpha-olefin having the structure
Claim 19
Dependent Claim
24 words
a vinyl ether selected from the group consisting of methyl vinyl ether, ethyl vinyl ether, the propyl vinyl ethers, and the butyl vinyl ethers,
Claim 20
Dependent Claim
24 words
a vinyl ether selected from the group consisting of methyl vinyl ether, ethyl vinyl ether, the propyl vinyl ethers, and the butyl vinyl ethers,
Claim 21
Dependent Claim
24 words
A VINLY ETHER SELECTED FROM THE GROUP CONSISTING OF METHYL VINYL ETHER, ETHYL VINYL ETHER, PROPYL VINYL ETHERS, AND THE BUTYL VINYL ETHERS AND
Claim 22
Dependent Claim
24 words
A VINLY ETHER SELECTED FROM THE GROUP CONSISTING OF METHYL VINYL ETHER, ETHYL VINYL ETHER, PROPYL VINYL ETHERS, AND THE BUTYL VINYL ETHERS AND
Claim 23
Dependent Claim
25 words
a vinyl ether selected from the group consisting of methyl vinyl ether, ethyl vinyl ether, the propyl vinyl ethers, and the butyl vinyl ethers, and
Claim 24
Dependent Claim
25 words
a vinyl ether selected from the group consisting of methyl vinyl ether, ethyl vinyl ether, the propyl vinyl ethers, and the butyl vinyl ethers, and
Claim 25
Dependent Claim
19 words
The polymer composition in claim 1 wherein the organotin maleate is the decyl half ester of dibutyltin-bis-maleate, (C4H9)2Sn(C4H2O4 C10H21)2.
Claim 26
Dependent Claim
46 words
The composition in claim 1 which also contains from about 0.05 to 2 parts by weight per hundred parts of resin of an anti-oxidant selected from the group consisting of alkyl substituted phenols, alkyl esters of thioacids, alkyl substituted phenyl phosphites and alkyl substituted phenyl phosphates.
Claim 27
Dependent Claim
56 words
vinyl acetate, and wherein said monomers are copolymerized in the presence of from 0 to 40 parts by weight of: C. a rubbery polymer of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and optionally a comonomer selected from the group consisting of styrene and a nitrile monomer having the structure
Claim 28
Dependent Claim
56 words
vinyl acetate, and wherein said monomers are copolymerized in the presence of from 0 to 40 parts by weight of: C. a rubbery polymer of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and optionally a comonomer selected from the group consisting of styrene and a nitrile monomer having the structure
Claim 29
Dependent Claim
56 words
VINYL ACETATE, AND WHEREIN SAID MONOMER ARE COPOLYMERIZED IN THE PRESENCE OF FROM 0 TO 40 PARTS BY WEIGHT OF: C. A RUBBERY POLYMER OF A CONJUGATED DIENE MONOMER SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE AND OPTIONALLY A COMONOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE AND A NITRILE MONOMER HAVING THE STRUCTURE
Claim 30
Dependent Claim
56 words
VINYL ACETATE, AND WHEREIN SAID MONOMER ARE COPOLYMERIZED IN THE PRESENCE OF FROM 0 TO 40 PARTS BY WEIGHT OF: C. A RUBBERY POLYMER OF A CONJUGATED DIENE MONOMER SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE AND OPTIONALLY A COMONOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE AND A NITRILE MONOMER HAVING THE STRUCTURE
Claim 31
Dependent Claim
56 words
vinyl acetate, and wherein said monomers are copolymerized in the presence of from 0 to 40 parts by weight of: C. a rubbery polymer of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and optionally a comonomer selected from the group consisting of styrene and a nitrile monomer having the structure
Claim 32
Dependent Claim
56 words
vinyl acetate, and wherein said monomers are copolymerized in the presence of from 0 to 40 parts by weight of: C. a rubbery polymer of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and optionally a comonomer selected from the group consisting of styrene and a nitrile monomer having the structure
Claim 33
Dependent Claim
78 words
The polymer composition of claim 1 wherein the component (A) is present in amounts of from about 70 to 90% by weight based on the combined weight of (A) and (B); component (B) is correspondingly present in amounts of from about 30 to 10% by weight based on the combined weight of (A) and (B), and the organotin maleate compound is present in concentrations of from about 0.1 to 1.0 parts by weight per hundred parts of resin.
Claim 34
Dependent Claim
21 words
The composition of claim 6 wherein the component (A) is a member selected from the group consisting of acrylonitrile and methacrylonitrile.
Claim 35
Dependent Claim
11 words
The composition of claim 7 wherein the component (B) is styrene.
Claim 36
Dependent Claim
26 words
The composition of claim 7 wherein component (B) is a member selected from the group consisting of methyl acrylate, ethyl acrylate, methyl methacrylate, and ethyl methacrylate.
Claim 37
Independent Claim
129 words
A method for stabilizing a polymer composition against thermal discoloration during processing, comprising adding from about 0.05 to 2.0 parts by weight of an organotin maleate compound per hundred parts of polymer wherein said organotin maleate is selected from the group consisting of the dialkyltin maleates having the formula: (R2SnC4H2O4)x where x is an integer of from 1 to 4, and R is an alkyl group containing from 2 to 12 carbon atoms, and the dialkyltin-bis-maleate half esters having the formula: (R2Sn(C4H2O4R'')2 where R is defined as above and R'' is an alkyl group containing from 4 to 14 carbon atoms, wherein the polymer is a copolymer obtained by polymerizing 100 parts by weight of: A. at least 50% by weight of at least one nitrile having the structure
Claim 38
Independent Claim
129 words
A method for stabilizing a polymer composition against thermal discoloration during processing, comprising adding from about 0.05 to 2.0 parts by weight of an organotin maleate compound per hundred parts of polymer wherein said organotin maleate is selected from the group consisting of the dialkyltin maleates having the formula: (R2SnC4H2O4)x where x is an integer of from 1 to 4, and R is an alkyl group containing from 2 to 12 carbon atoms, and the dialkyltin-bis-maleate half esters having the formula: (R2Sn(C4H2O4R'')2 where R is defined as above and R'' is an alkyl group containing from 4 to 14 carbon atoms, wherein the polymer is a copolymer obtained by polymerizing 100 parts by weight of: A. at least 50% by weight of at least one nitrile having the structure
Claim 39
Dependent Claim
80 words
The method of claim 10 wherein the polymer is obtained by polymerizing from about 70 to 90% by weight of component (A) based on the combined weight of (A) and (B) and correspondingly from about 30 to 10% by weight of component (B) based on the combined weight of (A) and (B); and wherein the organotin maleate compound is included in said polymer composition in concentrations of from about 0.1 to 1.0 parts by weight per hundred parts of resin.
Claim 40
Dependent Claim
20 words
The method of claim 10 wherein component (A) is a member selected from the group consisting of acrylonitrile and methacrylonitrile.
Claim 41
Dependent Claim
10 words
The method of claim 12 wherein component (B) is styrene.
Claim 42
Dependent Claim
26 words
The method of claim 12 wherein component (B) is a member selected from the group consisting of methyl acrylate, ethyl acrylate, methyl methacrylate, and ethyl methacrylate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |