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US4328152A
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Polyvinyl chloride polymer compositions containing trizinc dimolybdate monohydrate and zinc phosphite for smoke suppression
Assignee: Cyprus Amax Minerals Co
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Filing: 1980-12-16
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Granted: 1982-05-04
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Expires: 2000-12-16
Abstract
Abstract A smoke suppressed rigid or plasticized polyvinyl chloride polymer composition contains a polyvinyl chloride polymer and a small but effective amount of a smoke suppressant consisting essentially of a mixture of Zn 3 Mo 2 O 9 ·H 2 O and ZnHPO 3 , in an atomic ratio of Mo to P of about 0.5:1 to about 2.0:1, to impart smoke suppression to the polymer composition.
Inventors
- 👤 George A. Tsigdinos
- 👤 Thomas R. Weber
- 👤 Fred W. Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:24
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A smoke suppressed, rigid or plasticized polyvinyl chloride polymer composition consisting essentially of a polyvinyl chloride polymer, and a small but effective amount of a smoke suppressant essentially free of ZnO and consisting essentially of a mixture of Zn 3 Mo 2 O 9 .H 2 O and ZnHPO 3 , in an atomic ratio of Mo to P of about 0.5:1 to about 2.0:1, to impart smoke suppression to the polymer composition.
Claim 2
Dependent Claim
73 words
A smoke suppressed, rigid or plasticized polyvinyl chloride polymer composition consisting essentially of a polyvinyl chloride polymer, and a small but effective amount of a smoke suppressant essentially free of ZnO and consisting essentially of a mixture of Zn 3 Mo 2 O 9 .H 2 O and ZnHPO 3 , in an atomic ratio of Mo to P of about 0.5:1 to about 2.0:1, to impart smoke suppression to the polymer composition.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein the atomic ratio of Mo to P is about 0.75:1 to about 1.5:1.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein the atomic ratio of Mo to P is about 0.75:1 to about 1.25:1.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the atomic ratio of Mo to P is about 1:1.
Claim 6
Dependent Claim
37 words
The composition of claim 1, 2, 3, or 4 wherein said smoke suppressant is present in said composition in an amount between about 0.1 parts per hundred parts resin and about 20 parts per hundred parts resin.
Claim 7
Dependent Claim
33 words
The composition of claim 5 wherein said smoke suppressant is present in said composition in an amount between aboout 0.2 parts per hundred parts resin and about 10 parts per hundred parts resin.
Claim 8
Dependent Claim
15 words
The composition of claim 1 wherein said smoke suppressant is extended on a particulate carrier.
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) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |