Patent US3884872A successfully refreshed from Google Patents.
US3884872A
Expired / Lapsed
US
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Inorganic zinc salts as color stabilizers for acrylonitrile vinyl chloride dyesite containing copolymers
Assignee: Bridgestone Firestone Inc
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Filing: 1973-08-07
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Granted: 1975-05-20
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Expires: 1993-08-07
Abstract
Abstract A color stabilized modacrylic dye site containing copolymer composition containing from 20 to 80 percent by weight of acrylonitrile with the remainder being vinyl chloride. The color stabilizing agent is selected from inorganic zinc salts and ranges from 0.01 to 5.0 percent by weight of the copolymer.
Inventors
- 👤 Robert R Falconio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:02
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C08K3/10; C08K3/105; C08K3/16; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
107 words
A COLOR STABILIZED COPOLYMER COMPOSITION COMPRISING, A COPOLYMER HAVING FROM ABOUT 20 TO ABOUT 80 PERCENT BY WEIGHT OF VINYL CHLORIDE AND FROM ABOUT 80 TO ABOUT 20 PERCENT OF ACRYLONITRILE, SAID COPOLYMER HAVING FROM 0.01 TO 10 PERCENT BY WEIGHT OF A DYE SITE, SAID DYE SITE BEING AN AMINE SULFONATE SALT OF A SULFONIC ACID AND A HIGHER ALKYL GROUP CONTAINING PRIMARY, SECONDARY OR TERTIARY AIMINO COMPOUNDS AND, SAID COPOLYMER HAVING FROM 0.01 TO ABOUT 5 PERCENT BY WEIGHT OF A COLOR STABLIZING INORGANIC ZINC COMPOUND, SAID INORGANIC ZINC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, ZINC CHLORIDE, ZINC CARBONATE AND ZINC SULFATE.
Claim 2
Dependent Claim
107 words
A COLOR STABILIZED COPOLYMER COMPOSITION COMPRISING, A COPOLYMER HAVING FROM ABOUT 20 TO ABOUT 80 PERCENT BY WEIGHT OF VINYL CHLORIDE AND FROM ABOUT 80 TO ABOUT 20 PERCENT OF ACRYLONITRILE, SAID COPOLYMER HAVING FROM 0.01 TO 10 PERCENT BY WEIGHT OF A DYE SITE, SAID DYE SITE BEING AN AMINE SULFONATE SALT OF A SULFONIC ACID AND A HIGHER ALKYL GROUP CONTAINING PRIMARY, SECONDARY OR TERTIARY AIMINO COMPOUNDS AND, SAID COPOLYMER HAVING FROM 0.01 TO ABOUT 5 PERCENT BY WEIGHT OF A COLOR STABLIZING INORGANIC ZINC COMPOUND, SAID INORGANIC ZINC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, ZINC CHLORIDE, ZINC CARBONATE AND ZINC SULFATE.
Claim 3
Dependent Claim
34 words
A color stabilized copolymer composition as in claim 1, wherein said range of vinyl chloride is from 20 percent to 40 percent and said range of acrylonitrile is from 80 percent to 60 percent.
Claim 4
Dependent Claim
34 words
A color stabilized copolymer composition as in claim 1, wherein said vinyl chloride range is from about 30 to about 35 percent and said acrylonitrile range is from about 70 to about 65 percent.
Claim 5
Dependent Claim
20 words
A color stabilized copolymer composition as set forth in claim 1, wherein said sulfonic acid is 2-acrylamido-2-methyl propane sulfonic acid.
Claim 6
Dependent Claim
21 words
A color stabilized copolymer composition as in claim 1, wherein said higher alkyl group contain from 8 to 30 carbon atoms.
Claim 7
Dependent Claim
32 words
A color stabilized copolymer composition as in claim 5, wherein said vinyl chloride ranges from about 20 to about 40 percent and said acrylonitrile ranges from about 80 to about 60 percent.
Claim 8
Dependent Claim
32 words
A color stabilized copolymer composition as in claim 5, wherein said vinyl chloride ranges from about 30 to about 35 percent and said acrylonitrile ranges from about 70 to about 65 percent.
Claim 9
Dependent Claim
23 words
A color stabilized copolymer composition as in claim 6, wherein said inorganic zinc compound is selected from the group consisting of zinc oxide.
Claim 10
Dependent Claim
22 words
A color stabilized copolymer Composition as in claim 6, wherein said zinc compound ranges from 0.1 to about 1.0 percent by weight.
Claim 11
Dependent Claim
22 words
A color stabilized copolymer composition as in claim 9, wherein said zinc compound is selected from the group consisting of zinc carbonate.
Claim 12
Dependent Claim
22 words
A color stabliized copolymer composition as in claim 9, wherein said zinc compound is selected from the group consisting of zinc chloride.
Claim 13
Dependent Claim
22 words
A color stabilized copolymer composition as in claim 9, wherein said zinc compound is selected from the group consisting of zinc sulfate.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |