US3715333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinylchloride stabilization with mixtures of tin salts
Assignee: M&T Chemicals Inc
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Filing: 1969-11-13
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Granted: 1973-02-06
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Expires: 1989-11-13
Abstract
Abstract This invention relates to stabilizing compositions; to the process for preparing a novel halogen-containing polymer; and to polymers stabilized against the deteriorative effect of heat which comprises a vinyl chloride or vinylidene chloride homopolymer or copolymer and a stabilizing amount of: as a first stabilizer an organotin halide exhibiting the formula RSnX3 wherein R is a hydrocarbon and X is halogen and as a second stabilizer a sulfur-containing organotin compound exhibiting two direct carbon to tin bonds and two direct sulfur to tin bonds.
Inventors
- 👤 W Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A novel stabilizing composition for stabilizing a vinyl chloride homopolymer or a copolymer of vinyl chloride with a suitable ethylenically unsaturated monomer against the deteriorative effect of heat which comprises as a first stabilizer an organotin halide exhibiting the formula RSnX3 wherein R is a monovalent hydrocarbon radical selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, alkaryl, aralkyl, and cycloalkyl and X is a halogen atom selected from the group consisting of chlorine and bromine and as a second stabilizer an organotin compound exhibiting the formula R''2Sn(SR'''')2 wherein R'' is a monovalent hydrocarbon radical selected from the same group as R and R'''' is a monovalent hydrocarbon radical selected from the same group as R or the group -CH2 COOR'''''' wherein R'''''' is a hydrocarbon selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, cycloalkyl, aralkyl, and alkaryl.
Claim 2
Dependent Claim
149 words
A novel stabilizing composition for stabilizing a vinyl chloride homopolymer or a copolymer of vinyl chloride with a suitable ethylenically unsaturated monomer against the deteriorative effect of heat which comprises as a first stabilizer an organotin halide exhibiting the formula RSnX3 wherein R is a monovalent hydrocarbon radical selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, alkaryl, aralkyl, and cycloalkyl and X is a halogen atom selected from the group consisting of chlorine and bromine and as a second stabilizer an organotin compound exhibiting the formula R''2Sn(SR'''')2 wherein R'' is a monovalent hydrocarbon radical selected from the same group as R and R'''' is a monovalent hydrocarbon radical selected from the same group as R or the group -CH2 COOR'''''' wherein R'''''' is a hydrocarbon selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, cycloalkyl, aralkyl, and alkaryl.
Claim 3
Dependent Claim
39 words
The stabilizing composition of claim 1 wherein said second stabilizer is of the formula R''2Sn(SCH2COOR'''''')2 wherein R'' and R'''''' are hydrocarbons selected from the group consistIng of alkyl having one to 20 carbon atoms, aryl, cycloalkyl, aralkyl, and alkaryl.
Claim 4
Dependent Claim
14 words
The stabilizing composition of claim 1 wherein said second stabilizer is dioctyltin bis(iso-octyl mercaptoacetate).
Claim 5
Dependent Claim
153 words
A novel halogen-containing polymer stabilized against the deteriorative effect of heat comprising a halogen-containing resin selected from the group consisting of vinyl chloride homopolymer and copolymers of vinyl chloride with suitable ethylenically unsaturated monomers and a stabilizing amount of as a first stabilizer an organotin trihalide exhibiting the formula RSnX3 wherein R is a monovalent hydrocarbon radical selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, alkaryl and cycloalkyl and X is a halogen atom selected from the group consisting of chlorine and bromine and a second stabilizer exhibiting the formula R''2Sn(SR'''')2 wherein R'' is a monovalent hydrocarbon radical selected from the same group as R and R'' is a monovalent hydrocarbon radical selected from the same group as R or the group -CH2 COOR'''''' wherein R'''''' is a hydrocarbon selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, cycloalkyl, aralkyl, and alkaryl.
Claim 6
Dependent Claim
153 words
A novel halogen-containing polymer stabilized against the deteriorative effect of heat comprising a halogen-containing resin selected from the group consisting of vinyl chloride homopolymer and copolymers of vinyl chloride with suitable ethylenically unsaturated monomers and a stabilizing amount of as a first stabilizer an organotin trihalide exhibiting the formula RSnX3 wherein R is a monovalent hydrocarbon radical selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, alkaryl and cycloalkyl and X is a halogen atom selected from the group consisting of chlorine and bromine and a second stabilizer exhibiting the formula R''2Sn(SR'''')2 wherein R'' is a monovalent hydrocarbon radical selected from the same group as R and R'' is a monovalent hydrocarbon radical selected from the same group as R or the group -CH2 COOR'''''' wherein R'''''' is a hydrocarbon selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, cycloalkyl, aralkyl, and alkaryl.
Claim 7
Dependent Claim
49 words
A novel halogen-containing polymer stabilized against the deteriorative effect of heat as claimed in claim 4 wherein said second stabilizer is of the formula R''2Sn(SCH2COOR'''''')2 wherein R'' and R'''''' are hydrocarbons selected from the group consisting of alkyl having one to 20 carbon atoms, aryl, cycloalkyl, aralkyl and alkaryl.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |