US3865787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin stabilizer systems of organotin sulfur-containing compounds and alkali metal bisulfite addition products
Assignee: Dart Industries Inc
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Filing: 1973-04-23
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Granted: 1975-02-11
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Expires: 1993-04-23
Abstract
Abstract A resin stabilizer composition which essentially contains: A. AN ORGANOTIN SULFUR-CONTAINING COMPOUND, FOR EXAMPLE, ORGANOTIN MERCAPTIDES, ORGANOTIN MERCAPTO-ACIDS, ORGANOTIN MERCAPTOACID ESTERS, ORGANOTIN SULFIDES, ORGANOTHIOSTANNOIC ACIDS AND THE LIKE, AND B. AN ALKALI METAL BISULFITE ADDITION PRODUCT, INCLUDING ALDEHYDE OR KETONE ALKALI METAL BISULFITES, FOR EXAMPLE, ACETONE SODIUM BISULFITE, CYCLOHEXANONE SODIUM BISULFITE, GLYOXAL SODIUM BISULFITE, FORMALDEHYDE SODIUM BISULFITE, ACETALDEHYDE SODIUM BISULFITE AND CYCLOHEXANONE POTASSIUM BISULFITE. These compositions synergistically contribute to the long term heat stability of vinyl halide resins. Among other advantages, the stabilizing efficiencies of such compositions are excellent and clarity in molded vinyl halide resins can be achieved with these stabilizer compositions.
Inventors
- 👤 Jerome H Ludwig
- 👤 Dale J Dieckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08K5/56; C08K5/57; C08K5/58
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
14 words
A RESIN STABILIZER COMPOSITION WHICH CONSISTS ESSENTIALLY OF, AN ORGANOTIN SULFUR-CONTAINING COMPOUND HAVING A
Claim 2
Dependent Claim
14 words
A RESIN STABILIZER COMPOSITION WHICH CONSISTS ESSENTIALLY OF, AN ORGANOTIN SULFUR-CONTAINING COMPOUND HAVING A
Claim 3
Dependent Claim
14 words
A resin stabilizer composition which consists essentially of, an organotin sulfur-containing compound having a
Claim 4
Dependent Claim
14 words
A resin stabilizer composition which consists essentially of, an organotin sulfur-containing compound having a
Claim 5
Dependent Claim
34 words
The composition of claim 2 wherein said organotin sulfur-containing compound is selected from the group consisting of an organotin mercaptide, organotin mercaptoacid, organotin mercaptoacid ester, organotin sulfide, and organo thiostannoic acid, and mixtures thereof.
Claim 6
Dependent Claim
41 words
The composition of claim 2 wherein said carbonyl derivative is selected from the group consisting of acetone sodium bisulfite, cyclohexanone sodium bisulfite, cyclohexanone potassium bisulfite, glyoxal di-sodium bisulfite, acetaldehyde sodium bisulfite, aldehyde sodium bisulfite or benzaldehyde sodium bisulfite, and mixtures thereof.
Claim 7
Dependent Claim
11 words
The composition of claim 2 wherein said alkali metal is sodium.
Claim 8
Dependent Claim
26 words
The composition of claim 2 wherein the relative amount of the organotin compound to the carbonyl compound is on the order of about 1:10 to 10:1.
Claim 9
Dependent Claim
31 words
A vinyl halide resin composition which comprises a vinyl halide resin and, as a heat stabilizer, an effective amount of a composition consisting essentially of, an organotin sulfur-containing compound having a
Claim 10
Dependent Claim
31 words
A vinyl halide resin composition which comprises a vinyl halide resin and, as a heat stabilizer, an effective amount of a composition consisting essentially of, an organotin sulfur-containing compound having a
Claim 11
Dependent Claim
31 words
A vinyl halide resin cOmposition which comprises a vinyl halide resin and, as a heat stabilizer, an effective amount of a composition consisting essentially of, an organotin sulfur-containing compound having a
Claim 12
Dependent Claim
31 words
A vinyl halide resin cOmposition which comprises a vinyl halide resin and, as a heat stabilizer, an effective amount of a composition consisting essentially of, an organotin sulfur-containing compound having a
Claim 13
Dependent Claim
34 words
The composition of claim 8 wherein said organotin sulfur-containing compound is selected from the group consisting of an organotin mercaptide, organotin mercaptoacid, organotin mercaptoacid ester, organotin sulfide, and organo thiostannoic acid, and mixtures thereof.
Claim 14
Dependent Claim
41 words
The composition of claim 8 wherein said carbonyl derivative is selected from the group consisting of acetone sodium bisulfite, cyclohexanone sodium bisulfite, cyclohexanone potassium bisulfite, glyoxal di-sodium bisulfite, acetaldehyde sodium bisulfite, formaldehyde sodium bisulfite or benzaldehyde sodium bisulfite, and mixtures thereof.
Claim 15
Dependent Claim
11 words
The composition of claim 8 wherein said alkali metal is sodium.
Claim 16
Dependent Claim
24 words
The composition of claim 8 wherein said effective amount is in the range of about 0.2 to about 15 parts per 100 parts resin.
Claim 17
Dependent Claim
23 words
The composition of claim 12 wherein the relative amounts of components are in the weight ratio range of about 1:10 to about 10:1.
Claim 18
Dependent Claim
11 words
An article formed from the composition of claim 8 having clarity.
Claim 19
Dependent Claim
39 words
The composition of claim 10 wherein the organotin sulfur-containing compound is selected from the group consisting of dibutyltin bis (isooctylthioglycolate), dimethyltin (isooctylthioglycolate), dioctyltin (isooctylthioglycolate), monomethyltin tris (isooctylthioglycolate), monobutyltin tris (isooctylthioglycolate), dibutyltin dilaurylmercaptide, butyl thiostannoic acid and dibutyltin bis (isooctyl-beta-mercapto-propionate).
Claim 20
Dependent Claim
45 words
The composition of claim 15 wherein said effective amount is in the range of about 0.2 to about 15 parts per 100 parts resin and the relative amount of the organotin compound to the carbonyl derivative is on the order of about 1:10 to 10:1.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |