US4105684A
Expired / Lapsed
US
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Process for the preparation of organotin trihalides
Assignee: Akzo NV
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Filing: 1977-05-03
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Granted: 1978-08-08
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Expires: 1997-05-03
Abstract
Abstract Organotin trihalides are prepared by reacting in a polar solvent a stannous halide, hydrogen halide and an olefin of the formula ##STR1## where R 1 , R 2 , R 3 , and R 4 are an alkyl group, an oxygen-containing hydrocarbon group or a hydrogen atom and at least one of the groups contains a carbonyl group adjacent to the carbon-carbon double bond. The resulting product may be converted into organotin stabilizers for polyvinyl chloride and other polymers.
Inventors
- 👤 Ronald E. Hutton
- 👤 Vincent Oakes
- 👤 Joseph Burley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:18
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/22; C07F7/2208
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A process for the preparation of organotin trihalides which comprises reacting in a polar solvent a stannous halide, hydrogen halide and an olefin of the formula ##STR23## where R 1 , R 2 , R 3 and R 4 represent an alkyl group with 1-18 carbon atoms, an oxygen-containing hydrocarbon group or a hydrogen atom, provided that at least one of R 1 and R 2 contains a carbonyl group adjacent to the olefinic double bond, and thereafter isolating the reaction product with the formula ##STR24## from the medium.
Claim 2
Dependent Claim
89 words
A process for the preparation of organotin trihalides which comprises reacting in a polar solvent a stannous halide, hydrogen halide and an olefin of the formula ##STR23## where R 1 , R 2 , R 3 and R 4 represent an alkyl group with 1-18 carbon atoms, an oxygen-containing hydrocarbon group or a hydrogen atom, provided that at least one of R 1 and R 2 contains a carbonyl group adjacent to the olefinic double bond, and thereafter isolating the reaction product with the formula ##STR24## from the medium.
Claim 3
Dependent Claim
23 words
A process according to claim 1 wherein the reaction is carried out at a temperature in the range of 10° to 30° C.
Claim 4
Dependent Claim
11 words
A process according to claim 1 wherein the halides are chlorides.
Claim 5
Dependent Claim
25 words
A process according to claim 1 wherein the olefin is selected from the group of acrylic acid, acrylate esters, vinyl alkyl ketones and acryloyl halides.
Claim 6
Dependent Claim
44 words
The process of claim 1 wherein at least one of R 1 , R 2 , R 3 and R 4 has a carbonyl radical which is an acid group, an ester group, an aldehyde group, an acid halide group or a ketone group.
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) | 1981-08-07 | 1982-02-06 | 1982-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-07 | 1986-02-06 | 1986-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-07 | 1990-02-06 | 1990-08-08 | $7700.00 | Window Closed / Lapsed |