Patent US4182698A successfully refreshed from Google Patents.
US4182698A
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Heat stabilized polyvinyl chloride dispersion resins
Assignee: Occidental Chemical Corp
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Filing: 1978-05-03
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Granted: 1980-01-08
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Expires: 1998-05-03
Abstract
Abstract Polyvinyl chloride dispersion resins are heat stabilized with (1) crystalline solid, water soluble, nitrogen containing organic heat stabilizers such as dicyandiamide, urea and guanidine salts in combination with (2) at least one water soluble organic salt of, for example, calcium or zinc.
Inventors
- 👤 Ronald M. Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/16; C08K5/21; C08K5/29; C08K5/31
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr, as crystalline solid, water soluble, nitrogen containing organic compound, urea, thiourea, dicyandiamide, guanidine salts, and, their water soluble condensation polymers with formaldehyde, in combination with from about 0.1 phr to about 1.0 phr of at least one water soluble organic salt of calcium or zinc.
Claim 2
Dependent Claim
80 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr, as crystalline solid, water soluble, nitrogen containing organic compound, urea, thiourea, dicyandiamide, guanidine salts, and, their water soluble condensation polymers with formaldehyde, in combination with from about 0.1 phr to about 1.0 phr of at least one water soluble organic salt of calcium or zinc.
Claim 3
Dependent Claim
32 words
A heat stabilized polyvinyl chloride resin according to claim 1 wherein said organic salt is a saturated or unsaturated fatty acid salt of from C 2 to C 20 in chain length.
Claim 4
Dependent Claim
18 words
A heat stabilized polyvinyl chloride resin according to claim 2 wherein said fatty acid salt is hydroxyl substituted.
Claim 5
Dependent Claim
50 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr dicyandiamide in combination with from about 0.1 phr to about 1.0 phr of calcium acetate.
Claim 6
Dependent Claim
50 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr dicyandiamide in combination with from about 0.1 phr to about 1.0 phr of calcium acetate.
Claim 7
Dependent Claim
50 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr dicyandiamide in combination with from about 0.1 phr to about 1.0 phr of zinc acetate.
Claim 8
Dependent Claim
50 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr dicyandiamide in combination with from about 0.1 phr to about 1.0 phr of zinc acetate.
Claim 9
Dependent Claim
61 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr dicyandiamide in combination with from about 0.1 phr to about 1.0 phr of calcium acetate and about 0.1 phr to about 1.0 phr of zinc acetate.
Claim 10
Dependent Claim
61 words
Polyvinyl chloride dispersion resin heat stabilized with from about 0.1 phr to about 3.0 phr of a water soluble and non-toxic heat stabilizing composition consisting essentially of from about 0.1 phr to about 1.0 phr dicyandiamide in combination with from about 0.1 phr to about 1.0 phr of calcium acetate and about 0.1 phr to about 1.0 phr of zinc acetate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |