US3997495A
Expired / Lapsed
US
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Organometallic stabilizers for vinyl chloride polymers
Assignee: Westvaco Corp
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Filing: 1976-01-14
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Granted: 1976-12-14
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Expires: 1996-01-14
Abstract
Abstract Disclosed herein are novel compounds of the formula <IMAGE> wherein x and y are integers from 3 to 9, x and y together equal 12 and wherein M is a divalent metal cation from the group consisting of calcium, barium, zinc and cadmium. These organometallic compounds are effective stabilizers of vinyl halide polymers against the deteriorative effects of heat and light.
Inventors
- 👤 Peter S. Creticos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
42 words
Organometallic compounds having the structural formula ##STR3## wherein x and y are integers from 3 to 9, x and y together equal 12 and wherein M is a divalent metal cation selected from the group consisting of calcium, barium, zinc and cadmium.
Claim 2
Dependent Claim
42 words
Organometallic compounds having the structural formula ##STR3## wherein x and y are integers from 3 to 9, x and y together equal 12 and wherein M is a divalent metal cation selected from the group consisting of calcium, barium, zinc and cadmium.
Claim 3
Dependent Claim
10 words
The organometallic compound of claim 1 wherein M is calcium.
Claim 4
Dependent Claim
10 words
The organometallic compound of claim 1 wherein M is barium.
Claim 5
Dependent Claim
10 words
The organometallic compound of claim 1 wherein M is zinc.
Claim 6
Dependent Claim
10 words
The organometallic compound of claim 1 wherein M is cadmium.
Claim 7
Dependent Claim
95 words
A halogen-containing polymer composition comprising; a. a polymer selected from the group consisting of polyvinyl chloride, polyvinylidene chloride and copolymers of vinyl chloride or vinylidene chloride with at least one ethylenically unsaturated monomer, and b. an effective amount of an organometallic compound to stabilize said polymer against deterioration from heat, said organometallic compound having the structural formula ##STR4## wherein x and y are integers from 3 to 9, x and y together equal 12 and wherein M is a divalent metal cation selected from the group consisting of calcium, barium, zinc, cadmium, and mixtures thereof.
Claim 8
Dependent Claim
95 words
A halogen-containing polymer composition comprising; a. a polymer selected from the group consisting of polyvinyl chloride, polyvinylidene chloride and copolymers of vinyl chloride or vinylidene chloride with at least one ethylenically unsaturated monomer, and b. an effective amount of an organometallic compound to stabilize said polymer against deterioration from heat, said organometallic compound having the structural formula ##STR4## wherein x and y are integers from 3 to 9, x and y together equal 12 and wherein M is a divalent metal cation selected from the group consisting of calcium, barium, zinc, cadmium, and mixtures thereof.
Claim 9
Dependent Claim
10 words
The polymer composition of claim 6 wherein M is calcium.
Claim 10
Dependent Claim
10 words
The polymer composition of claim 6 wherein M is cadmium.
Claim 11
Dependent Claim
10 words
The polymer composition of claim 6 wherein M is zinc.
Claim 12
Dependent Claim
10 words
The polymer composition of claim 6 wherein M is cadimum.
Claim 13
Dependent Claim
21 words
The polymer composition of claim 6 wherein said organometallic compound is added in an amount of 0.5% to 10.0% by weight.
Claim 14
Dependent Claim
21 words
The polymer composition of claim 11 wherein said organometallic compound is added in an amount of 1% to 5% by weight.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |