US4988751A
Expired / Lapsed
US
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Halogenated vinyl polymer composition and method for stabilizing halogenated vinyl polymer composition containing smoke retardants
Assignee: Witco Corp
•
Filing: 1989-04-28
•
Granted: 1991-01-29
•
Expires: 2009-04-28
Abstract
Abstract Halogenated vinyl polymer compositions containing molybdenum smoke retardants and organotin compounds having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin, typically from about 0.6 to about 1.7 and preferably from about 0.6 to about 0.9 gram atoms of sulfur per gram atom of tin.
Inventors
- 👤 Scott R. Chambers
- 👤 Michael R. Croce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; C08K5/57; C08K3/00; C08K3/18; C08K3/24; C08K5/58
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
65 words
A halogen containing polymer composition substantially resistant to staining comprising a halogenated vinyl polymer, a smoke retardant amount of at least one molybdenum smoke retardant and an effective stabilizing amount of an organotin stabilizer comprising a mixture of organotin compounds, said organotin stabilizer having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin.
Claim 2
Dependent Claim
65 words
A halogen containing polymer composition substantially resistant to staining comprising a halogenated vinyl polymer, a smoke retardant amount of at least one molybdenum smoke retardant and an effective stabilizing amount of an organotin stabilizer comprising a mixture of organotin compounds, said organotin stabilizer having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin.
Claim 3
Dependent Claim
33 words
The composition of claim 1 wherein said organotin stabilizer has an overall ratio of sulfur to tin of from about 0.6 to about 1.7 gram atoms of sulfur per gram atom of tin.
Claim 4
Dependent Claim
32 words
The composition of claim 1 wherein said organotin stabilizer has an overall sulfur to tin ratio of from about 0.6 to about 0.9 gram atoms of sulfur per gram atom of tin.
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein said mixture of organotin compounds includes a sulfur-containing organotin compound and a non-sulfur containing organotin compound.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein said organotin stabilizer is a mixture of sulfur-containing organotin compounds.
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein said mixture of organotin compounds includes organotin mercaptides and organotin sulfides.
Claim 8
Dependent Claim
22 words
The composition of claim 1 wherein said mixture of organotin compounds includes an organotin mercapto carboxylic acid ester and an organotin carboxylate.
Claim 9
Dependent Claim
56 words
The composition of claim 7 wherein the organotin mercapto carboxylic acid ester has the structural formula R m SnX.sub.(4-m) wherein R is lower alkyl, X is an ester of a mercapto carboxylic acid having about 4 to about 14 carbon atoms whose sulfur atom is linked to a tin atom and m is 1 or 2.
Claim 10
Dependent Claim
62 words
The composition of claim 8 wherein the organotin carboxylate has the structural formula: R' n SnY.sub.(4-n) wherein R' is lower alkyl; Y is ##STR2## wherein R" is selected from the group consisting of alkyl groups having from about 8 to about 13 carbon atoms and alkenyl groups having from about 8 to about 21 carbon atoms and n is 1 or 2.
Claim 11
Dependent Claim
39 words
The composition of claim 7 wherein the organotin mercapto acid ester comprises about 25 to about 75 weight percent of the organotin stabilizer and the organotin carboxylate comprises about 25 to about 75 weight percent of the organotin stabilizer.
Claim 12
Dependent Claim
16 words
The composition of claim 7 wherein the organotin stabilizer also contains a di(lower alkyl) tin oxide.
Claim 13
Dependent Claim
16 words
The composition of claim 9 wherein the halogenated vinyl polymer is a homopolymer of vinyl chloride.
Claim 14
Dependent Claim
9 words
The composition of claim 8 wherein R is methyl.
Claim 15
Dependent Claim
9 words
The composition of claim 9 wherein R' is butyl.
Claim 16
Dependent Claim
23 words
The composition of claim 7 wherein the organotin mercapto carboxylic acid ester is a mixture of mono and dialkyl mercapto carboxylic acid esters.
Claim 17
Dependent Claim
10 words
The composition of claim 8 wherein X is isooctyl thioglycolate.
Claim 18
Dependent Claim
21 words
The composition of claim 7 wherein the organotin mercapto carboxylic acid ester is a mixture of mono and dimethyltin isooctyl thioglycolates.
Claim 19
Dependent Claim
12 words
The composition of claim 9 wherein the organotin carboxylate is di-n-butyltin laurate.
Claim 20
Dependent Claim
21 words
The composition of claim 1 wherein the molybdenum smoke retardant is selected from the group consisting of amine and ammonium molybdates.
Claim 21
Dependent Claim
13 words
The composition of claim 19 wherein the molybdenum smoke retardant is ammonium octamolybdate.
Claim 22
Independent Claim
69 words
A method of providing improved heat and light stabilization in a halogenated vinyl polymer composition which includes a molybdenum smoke retardant without incurring discoloration or staining in said polymer composition, comprising incorporating into the halogenated vinyl polymer composition an organotin stabilizer comprising a mixture of organotin compounds having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin.
Claim 23
Independent Claim
69 words
A method of providing improved heat and light stabilization in a halogenated vinyl polymer composition which includes a molybdenum smoke retardant without incurring discoloration or staining in said polymer composition, comprising incorporating into the halogenated vinyl polymer composition an organotin stabilizer comprising a mixture of organotin compounds having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin.
Claim 24
Dependent Claim
32 words
The method of claim 21 wherein said organotin stabilizer has an overall sulfur to tin ratio of from about 0.6 to about 1.7 gram atoms of sulfur per gram atom of tin.
Claim 25
Dependent Claim
32 words
The method of claim 21 wherein said organotin stabilizer has an overall sulfur to tin ratio of from about 0.6 to about 0.9 gram atoms of sulfur per gram atom of tin.
Claim 26
Dependent Claim
16 words
The method of claim 21 wherein said organotin stabilizer is a mixture of sulfur-containing organotin compounds.
Claim 27
Dependent Claim
20 words
The method of claim 23 wherein said organotin stabilizer includes a sulfur-containing organotin compound and a non-sulfur containing organotin compound.
Claim 28
Dependent Claim
16 words
The method of claim 23 wherein said mixture of compounds includes organotin mercaptides and organotin sulfides.
Claim 29
Dependent Claim
15 words
The method of claim 21 wherein the halogenated vinyl polymer is a vinyl chloride homopolymer.
Claim 30
Dependent Claim
21 words
The method of claim 21 wherein the molybdenum smoke retardant is selected from the group consisting of amine and ammonium molybdates.
Claim 31
Dependent Claim
20 words
The method of claim 21 wherein the organotin stabilizer comprises an organotin mercapto carboxylic acid ester and an organotin carboxylate.
Claim 32
Dependent Claim
56 words
The method of claim 29 wherein the organotin mercapto carboxylic acid ester has the structural formula R m SnX.sub.(4-m) wherein R is lower alkyl, X is an ester of a mercapto carboxylic acid having about 4 to about 14 carbon atoms whose sulfur atom is linked to a tin atom and m is 1 or 2.
Claim 33
Dependent Claim
62 words
The method of claim 30 wherein the organotin carboxylate has the structural formula: R' n SnY.sub.(4-n) wherein R' is lower alkyl; Y is ##STR3## wherein R" is selected from the group consisting of alkyl groups having from about 8 to about 13 carbon atoms and alkenyl groups having from about 8 to about 21 carbon atoms and n is 1 or 2.
Claim 34
Dependent Claim
40 words
The method of claim 30 wherein the organotin mercapto acid ester comprises about 25 to about 75 weight percent of the organotin stabilizer and the organotin carboxylate comprises about 25 to about 75 weight percent of the organo tin stabilizer.
Claim 35
Dependent Claim
23 words
The method of claim 29 wherein the organotin mercapto carboxylic acid ester is a mixture of mono and dialkyl mercapto carboxylic acid esters.
Claim 36
Dependent Claim
10 words
The method of claim 30 wherein X is isooctyl thioglycolate.
Claim 37
Dependent Claim
12 words
The method of claim 31 wherein the organotin carboxylate is di-n-butyltin laurate.
Claim 38
Dependent Claim
13 words
The method of claim 21 wherein the molybdenum smoke retardant is ammonium octamolybdate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |