US4080363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making organotin dihalides and trihalides and stabilizers prepared therefrom
Assignee: Akzo NV
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Filing: 1976-02-23
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Granted: 1978-03-21
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Expires: 1996-02-23
Abstract
Abstract An organotin dihalide having the formula <IMAGE> OR A MIXTURE OF THE DIHALIDE AND AN ORGANOTIN TRIHALIDE IS PREPARED BY REACTING METALLIC TIN WITH AN OLEFIN HAVING THE FORMULA <IMAGE> wherein R1, R2, R3 and R4 are hydrogen or a hydrocarbon radical and at least one of R1 or R2 contains an oxygen-containing group with a carbonyl group adjacent to the olefinic double bond and Hal is a halogen. The organotin dihalide or mixture thereof with a trihalide is reacted with an acid or mercaptan to produce a stabilizer for polyvinyl chloride polymers and the like.
Inventors
- 👤 Ronald Eric Hutton
- 👤 Joseph William Burley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C07; C07F; C07F7/00; C07F7/22; C07F7/2208; C07F7/226; C08K5/58
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
Organotin compounds having the formula (R) 2 SnX 2 , where R represents the group ##STR8## where R 1 , R 2 , R 3 and R 4 represent hydrogen or a hydrocarbon group, provided that of R 1 and R 2 at least one is an oxygen-containing group with a carbonyl group adjacent to HC--, and X represents an organic residue selected from the group -- S(CH 2 ) n COO alkyl and --S(CH 2 ) n OCO alkyl with n=1 or 2, --S alkyl, --OCO alkyl and --OCOCH=CHCOO alkyl.
Claim 2
Dependent Claim
91 words
Organotin compounds having the formula (R) 2 SnX 2 , where R represents the group ##STR8## where R 1 , R 2 , R 3 and R 4 represent hydrogen or a hydrocarbon group, provided that of R 1 and R 2 at least one is an oxygen-containing group with a carbonyl group adjacent to HC--, and X represents an organic residue selected from the group -- S(CH 2 ) n COO alkyl and --S(CH 2 ) n OCO alkyl with n=1 or 2, --S alkyl, --OCO alkyl and --OCOCH=CHCOO alkyl.
Claim 3
Dependent Claim
41 words
The organotin compound of claim 1 wherein at least one R 1 or R 2 is an oxygen-containing group having the formula ##STR9## where R 5 represents hydrogen, hydroxyl, halogen, amino or alkyl, substituted alkyl or alkoxy containing 1-18 carbon atoms.
Claim 4
Dependent Claim
28 words
The organotin compound of claim 2 wherein R 5 is an alkoxy group, R 2 is hydrogen or methyl and R 3 and R 4 are both hydrogen.
Claim 5
Dependent Claim
60 words
A stabilizer composition for polymers wherein the composition contains a mixture of an organotin compound having the formula RSnX 3 and a compound having the formula (R 2 )SnX 2 , where R and X have the meaning indicated in claim 1, in an amount which adapts it for adding a stabilizing amount of the organotin compound to a polymer.
Claim 6
Dependent Claim
18 words
A polymer composition containing a stabilizing amount of one or more of the organotin compounds of claim 1.
Claim 7
Dependent Claim
42 words
A polymer composition containing a stabilizing amount of a mixture of an organotin compound having the formula (R) 2 SnX 2 and an organotin compound having the formula RSnX 3 , where R and X have the meaning indicated in claim 1.
Claim 8
Dependent Claim
59 words
A stabilizer composition for polyvinyl chloride wherein the composition contains a mixture of an organotin compound having the formula RSnX 3 and a compound having the formula RSnX 2 , where R and X have the meaning indicated in claim 1 in an amount which adapts it for adding a stabilizing amount of the organotin compound to a polymer.
Claim 9
Dependent Claim
19 words
A polyvinyl chloride composition containing a stabilizing amount of one or more of the organotin compounds of claim 1.
Claim 10
Dependent Claim
43 words
A polyvinyl chloride composition containing a stabilizing amount of a mixture of an organotin compound having the formula (R) 2 SnX 2 and an organotin compound having the formula RSnX 3 , where R and X have the meaning indicated in claim 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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |