Patent US3669995A successfully refreshed from Google Patents.
US3669995A
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Poly(organotin) mercaptide polymers and resins stabilized therewith
Assignee: Teknor Apex Co
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Filing: 1969-10-30
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Granted: 1972-06-13
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Expires: 1989-10-30
Abstract
Abstract Poly(organotin) mercaptide condensation polymers useful as stabilizer for vinyl resins are prepared by reacting an organotin compound with a polyfunctional polymercapto ester derived from a polyhydric alcohol containing more than two hydroxyl groups, which is esterified with a mercapto acid so as to leave one hydroxyl group unesterified, and the latter is esterified with an aliphatic or aromatic monocarboxylic acid.
Inventors
- 👤 Joseph Fath
- 👤 Donald L Deardorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:27
CPC Classifications
C; C07; C07C; C07C323/00; C08; C08G; C08G79/00; C08G79/12; C08L; C08L27/00; C08L27/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
10 words
The composition of claim 1 in which R is butyl.
Claim 2
Dependent Claim
16 words
The composition of claim 1 in which said condensation polymer is cross-linked with an aryl di-isocyanate.
Claim 3
Dependent Claim
14 words
The composition of claim 1 in which Y is the hydrocarbon moiety of pentaerythritol.
Claim 4
Dependent Claim
24 words
The composition of claim 1 in which X - S is the moiety of a mercaptoalkanoic acid containing from 1 to 6 carbon atoms.
Claim 5
Dependent Claim
13 words
The composition of claim 5 in which the mercaptoalkanoic acid is mercaptopropionic acid.
Claim 6
Dependent Claim
21 words
The composition of claim 1 in which R'' is the residue formed by the removal of acidic hydrogen from pelargonic acid.
Claim 7
Dependent Claim
14 words
Poly(dibutyltin) 2.0 (pentaerythritol pelargonate benzoate dithioglycolate) 1.0 (isooctylthioglycolate) 2.0, the numerals indicating molar proportions.
Claim 8
Dependent Claim
16 words
Poly(dibutyltin) 2.0 ((pentaerythritol) 1.0 (pelargonate) 2.0 (mercaptopropionate) 1.8) 1.1 (phenoxyethylmercaptopropionate) 2.0, the numerals indicating molar proportions.
Claim 9
Dependent Claim
17 words
Poly(dibutyltin) 2.0 ((pentaerythritol) 1.0 (pelargonate) 1.75 (mercaptopropionate) 1.75 ) 1.14 (n-dodecylmercaptide) 2.0, the numerals indicatiNg molar proportions.
Claim 10
Dependent Claim
13 words
Poly(dibutyltin) 2.0 (trimethylolpropane pelargonate di(thioglycolate)) 1.0 (phenoxyethylthioglycolate) 2.0, the numerals indicating molar proportions.
Claim 11
Dependent Claim
18 words
Poly(dibutyltin) 2.0 (pentaerythritol monohydroxy monopelargonate di(mercaptopropionate)) 1.0 (lauryl thioglycolate) 2.0 (toluene-2, 4-diisocyanate) 0.6, the numerals indicating molar proportions.
References Cited (Backward Citations)
US2648650A
Cited
US3158576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |