US3716568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of dioctyltin oxide and dioctyltin monohydric aliphatic saturated alcohol thioglycolate esters and process
Assignee: ARGUS CHEM CORP US
•
Filing: 1970-09-01
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Granted: 1973-02-13
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Expires: 1990-09-01
Abstract
Abstract Dioctyltin oxide-dioctyltin monohydric aliphatic saturated alcohol thioglycolate ester reaction products are provided, which are particularly useful as stabilizers for polyvinyl chloride resins.
Inventors
- 👤 L Brecker
- 👤 O Kauder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C07; C07F; C07F7/00; C07F7/22; C07F7/226
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
A homogeneous liquid reaction product containing from about 12 percent to about 26 percent tin that is compatible with polyvinyl chloride resins, and that is a particularly effective polyvinyl chloride resin stabilizer, comprising the product of the reaction at from about 50* to about 250* C. of dioctyltin oxide with a dioctyltin bis(monohydric aliphatic saturated alcohol thioglycolate)ester, in which the aliphatic alcohol radical has from six to about eighteen carbon atoms, the dioctyltin oxide being in an amount of at least 2 percent up to about 50 percent by weight of the reaction product.
Claim 2
Dependent Claim
94 words
A homogeneous liquid reaction product containing from about 12 percent to about 26 percent tin that is compatible with polyvinyl chloride resins, and that is a particularly effective polyvinyl chloride resin stabilizer, comprising the product of the reaction at from about 50* to about 250* C. of dioctyltin oxide with a dioctyltin bis(monohydric aliphatic saturated alcohol thioglycolate)ester, in which the aliphatic alcohol radical has from six to about eighteen carbon atoms, the dioctyltin oxide being in an amount of at least 2 percent up to about 50 percent by weight of the reaction product.
Claim 3
Dependent Claim
25 words
A reaction product according to claim 1 in which the dioctyltin bis(thioglycolate)ester is an ester of an alcohol having from eight to 12 carbon atoms.
Claim 4
Dependent Claim
17 words
A reaction product according to claim 2 in which the dioctyltin bis(thioglycolate)ester is a dioctyltin bis(octyl thioglycolate).
Claim 5
Dependent Claim
28 words
A reaction product according to claim 1 in which the amount of dioctyltin oxide is from 5 percent up to 40 percent by weight of the reaction product.
Claim 6
Dependent Claim
19 words
A reaction product according to claim 1 in which the dioctyltin oxide is derived from dioctyltin dichloride and alkali.
Claim 7
Dependent Claim
39 words
A process for preparing a reaction product according to claim 1, which comprises blending the dioctyltin oxide and the dioctyltin bis(thioglycolate)ester, and heating the mixture at from about 50* to about 250* C. until a homogeneous liquid is formed.
Claim 8
Dependent Claim
22 words
A process according to claim 6, in which a solvent is used, and the reaction is effected under reflux of the solvent.
Claim 9
Dependent Claim
28 words
A process according to claim 6, in which the dioctyltin bis(thioglycolate) ester is formed in situ from a thioglycolate ester and the stoichiometrically equivalent amount of dioctyltin oxide.
References Cited (Backward Citations)
US3478071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |