US3899465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic organotin stabilizer compositions and resins stabilized therewith
Assignee: Cincinnati Milacron Chemicals Inc
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Filing: 1974-06-18
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Granted: 1975-08-12
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Expires: 1994-06-18
Abstract
Abstract An improved stabilized composition comprises a synergistic combination of an organic thiolanhydride and a monohydrocarbyl tin compound of the formula
Inventors
- 👤 Christian H Stapfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/38; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A STABILIZING COMPOSITION FOR VINYL HALIDE RESINS SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYVINYLIDENE CHLORIDE, COPOLYMERS OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE, COPOLYMERS OF VINYL CHLORIDE WITH OTHER ETHYLENICALLY UNSATURATED MONOMERS AND MIXTURES THEREOF COMPRISING SYNERGISTIC COMBINATION OF (1) A THIOLANHYDRIDE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
47 words
A STABILIZING COMPOSITION FOR VINYL HALIDE RESINS SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYVINYLIDENE CHLORIDE, COPOLYMERS OF VINYL CHLORIDE AND VINYLIDENE CHLORIDE, COPOLYMERS OF VINYL CHLORIDE WITH OTHER ETHYLENICALLY UNSATURATED MONOMERS AND MIXTURES THEREOF COMPRISING SYNERGISTIC COMBINATION OF (1) A THIOLANHYDRIDE CORRESPONDING TO THE FORMULA
Claim 3
Dependent Claim
59 words
The stabilizing composition of claim 1 wherein (1) is selected from the group consisting of thiollauric anhydride, thiolstearic anhydride and thiolbenzoic anhydride and (2) is selected from the group consisting of methyltin tris (isoocytl mercaptopropionate), butyltin tris (isooctyl mercaptoacetate), octyltin tristearate, butyltin tris (isooctyl maleate), octyltin trIs (lauryl mercaptide), bis (butyltin diisooctyl mercaptopropionate) oxide, methyltin sulfide and methylthiostannoic acid.
Claim 4
Dependent Claim
19 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent methyltin tris (isooctyl mercaptopropionate).
Claim 5
Dependent Claim
19 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent butyltin tris (isooctyl mercaptoacetate).
Claim 6
Dependent Claim
17 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent methyltin sulfide.
Claim 7
Dependent Claim
18 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent methyl thiostannoic acid.
Claim 8
Dependent Claim
19 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent butyltin tris (isooctyl maleate).
Claim 9
Dependent Claim
19 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent octyltin tris (lauryl mercaptide).
Claim 10
Dependent Claim
17 words
The stabilizing composition of claim 2 wherein (2) is 4 to 12 weight per cent octyltin tristearate.
Claim 11
Dependent Claim
16 words
A polyvinyl chloride resin stabilized with 0.1 to 10% of the stabilizing composition of claim 1.
References Cited (Backward Citations)
US3822233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |