USRE30338E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organotin stabilizer composition containing more than 20 percent tin and resin compositions containing the same
Assignee: Argus Chemical Corp
•
Filing: 1978-08-28
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Granted: 1980-07-15
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Expires: 1998-08-28
Abstract
Abstract A polyvinyl chloride resin stabilizer is provided having a high concentration of tin, in the range from about 20 to about 35% by weight, and a high concentration of sulfur, within the range from about 10 to about 25% sulfur, comprising .[.an.]. .Iadd.a di .Iaddend.organotin .Iadd.di .Iaddend.alpha- or beta-mercapto carboxylic acid ester and an organotin sulfide. Polyvinyl chloride resin compositions are also provided containing these stabilizers.
Inventors
- 👤 Otto S. Kauder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
199 words
A stabilizer composition for improving the resistance to deterioration of polyvinyl chloride resins when heated at 350° F., consisting essentially of an organotin alpha- or beta-mercapto carboxylic acid ester having the formula ##STR29## wherein R' is an alkyl radical linked to tin through carbon and having from one to about eight carbon atoms, Z is a bivalent alkylene radical having from one to about two carbon atoms, and carrying the --S-- and --COOR" groups, and R" is an organic group derived from a monohydric or polyhydric alcohol having from one to about two hydroxyl groups and from one to about fifteen carbon atoms, .Iadd.and .Iaddend.m is an integer from 1 to 2, .[.and n is an integer from 1 to 2,.]. the S--Z--(COOR") m group being derived from an alpha- or beta-mercaptocarboxylic acid ester; and an organotin sulfide having the formula R 2 SnS, in which R is alkyl linked to tin through carbon and has from one to about eight carbon atoms, the organotin compounds together comprising an amount of tin within the range from about 20 to about 35% by weight, and an amount of sulfur within the range from about 10 to about 35% by weight.
Claim 2
Dependent Claim
199 words
A stabilizer composition for improving the resistance to deterioration of polyvinyl chloride resins when heated at 350° F., consisting essentially of an organotin alpha- or beta-mercapto carboxylic acid ester having the formula ##STR29## wherein R' is an alkyl radical linked to tin through carbon and having from one to about eight carbon atoms, Z is a bivalent alkylene radical having from one to about two carbon atoms, and carrying the --S-- and --COOR" groups, and R" is an organic group derived from a monohydric or polyhydric alcohol having from one to about two hydroxyl groups and from one to about fifteen carbon atoms, .Iadd.and .Iaddend.m is an integer from 1 to 2, .[.and n is an integer from 1 to 2,.]. the S--Z--(COOR") m group being derived from an alpha- or beta-mercaptocarboxylic acid ester; and an organotin sulfide having the formula R 2 SnS, in which R is alkyl linked to tin through carbon and has from one to about eight carbon atoms, the organotin compounds together comprising an amount of tin within the range from about 20 to about 35% by weight, and an amount of sulfur within the range from about 10 to about 35% by weight.
Claim 3
Dependent Claim
19 words
A stabilizer composition in accordance with claim 1, in which the organotin mercaptocarboxylic acid ester is an organotin thioglycolate.
Claim 4
Dependent Claim
37 words
A stablizer composition in accordance with claim 1, in which the organotin sulfide is dibutyl tin sulfide and the organotin mercaptocarboxylic acid ester is .[.monobutyl.]. .Iadd.dibutyl .Iaddend.tin or .[.monooctyl.]. .Iadd.dioctyl .Iaddend.tin .[.tris(isooctyl.]. .Iadd.bis(octyl .Iaddend.tin thioglycolate. .[.4. A
Claim 5
Dependent Claim
42 words
stabilizer composition according to claim 1, in which n is 1..]. 5. A stabilizer composition according to claim .[.4,.]. .Iadd.1, .Iaddend.in which the organotin mercaptocarboxylic acid ester is .[.monobutyl.]. .Iadd.dibutyl .Iaddend.tin .[.tris(isoocytyl.]. .Iadd.bis(isooctyl .Iaddend.thioglycolate) and the organotin sulfide is dibutyl tin sulfide.
Claim 6
Dependent Claim
31 words
. A stabilizer composition according to claim .[.4.]. .Iadd.1 .Iaddend.in which the organotin mercaptocarboxylic acid ester is .[.monobutyl.]. .Iadd.dibutyl .Iaddend.tin .[.tris(isoocotyl.]. .Iadd.bis(isoocotyl .Iaddend.thioglycolate) and the organotin sulfide is dioctyl tin sulfide.
Claim 7
Dependent Claim
21 words
. A stabilizer composition according to claim .[.4,.]. .Iadd.1 .Iaddend.in which the organotin mercaptocarboxylic acid ester is .[.monobutyl.]. .Iadd.dibutyl .Iaddend.tin .[.tris(isooctyl.].
Claim 8
Dependent Claim
15 words
.Iadd.bis(isooctyl .Iaddend.thioglycolate). 8. A stabilizer composition according to claim .[.4,.]. .Iadd.1 .Iaddend.in which the organotin
Claim 9
Dependent Claim
32 words
sulfide is dibutyl tin sulfide. 9. A polyvinyl chloride resin composition having an enhanced resistance to deterioration when heated at 350° F., consisting essentially of a polyvinyl chloride resin and a stabilizer
Claim 10
Dependent Claim
32 words
sulfide is dibutyl tin sulfide. 9. A polyvinyl chloride resin composition having an enhanced resistance to deterioration when heated at 350° F., consisting essentially of a polyvinyl chloride resin and a stabilizer
Claim 11
Dependent Claim
22 words
composition in accordance with claim 1. 10. A polyvinyl chloride resin composition in accordance with claim 9 in which the polyvinyl chloride
Claim 12
Dependent Claim
21 words
resin is polyvinyl chloride homopolymer. 11. A polyvinyl chloride resin composition in accordance with claim 9 in which the polyvinyl chloride
Claim 13
Dependent Claim
37 words
resin is a copolymer of vinyl chloride and vinyl acetate. 12. A polyvinyl chloride resin composition in accordance with claim 9 in which the amount of stabilizer composition is within the range from about 0.25% to about
Claim 14
Dependent Claim
22 words
15% by weight of the composition. 13. A polyvinyl chloride resin composition in accordance with claim 9 including in addition a polyvalent
Claim 15
Dependent Claim
23 words
metal salt of an aliphatic fatty acid. 14. A polyvinyl chloride resin composition in accordance with claim 9 including in addition an organic
Claim 16
Dependent Claim
10 words
phosphite. 15. A polyvinyl chloride resin composition in accordance with
Claim 17
Dependent Claim
10 words
phosphite. 15. A polyvinyl chloride resin composition in accordance with
Claim 18
Dependent Claim
37 words
claim 9 including in addition an epoxy compound. 16. A polyvinyl chloride resin composition in accordance with claim 9 including in addition a plasticizer for the resin in an amount in excess of about 15% by weight.
Claim 19
Dependent Claim
27 words
. A rigid polyvinyl chloride resin composition in accordance with claim 9 comprising a plasticizer in an amount up to about 10% by weight of the composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |