US3900441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc and molybdenum-containing compounds as smoke depressants for poly(vinyl chloride) resin compositions
Assignee: KLEERDEX COMPANY PO BOX 1225 BRISTOL PENNSYLVANIA 19007 A CORP OF
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Filing: 1974-07-10
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Granted: 1975-08-19
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Expires: 1994-07-10
Abstract
Abstract The propensity of poly(vinyl chloride) homopolymer and poly (vinyl chloride) copolymer resin-containing compositions to smoke on exposure to fire is greatly diminished by the addition of effective amounts of mixtures of zinc compounds and molybdenum compounds, which have the molybdenum metal ion in the 6 plus valence state, or zinc molybdate. Based on 100 parts by weight resin, mixtures containing 0.2 to 7 parts by weight zinc metal plus 0.3 to 10 parts by weight molybdenum metal have been found effective. Also from 0.5 to 7 parts by weight zinc molybdate has been found effective. In the case of the mixtures, the minimum total effective weight of zinc and molybdenum metal is about 0.8 parts with a maximum of about 10 parts, based on 100 parts by weight resin, and, in the mixtures, the zinc to molybdenum metal ion weight ratio is preferably less than about 2:1.
Inventors
- 👤 Thomas Y King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
A POLY(VINYL CHLORIDE) HOMOPOLYMER OR COPOLYMER RESINOUS COMPOSITION, WHEREIN SAID COPOLYMER COMPRISES A MAJOR PORTION OF VINYL CHLORIDE, CONTAINING, AS A SMOKE SUPPRESSANT, BASED ON 100 PARTS BY WEIGHT RESIN: A. A MIXTURE OF ZINC AND MOLYBDENUM COMPOUNDS CONTAINING BETWEEN ABOUT 0.2 TO 7.0 PARTS BY WEIGHT ZINC METAL FROM ZINC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF INORGANIC ZINC COMPOUNDS AND ZINC 2-ETHYLHEXONATE AND BETWEEN ABOUT 0.3 TO 10.0 PARTS BY WEIGHT MOLYBDENUM METAL FROM MOLYBDENUM COMPOUNDS HAVING THE MOLYBDENUM ION IN THE SIX PLUS VALANCE STATE AND SELECTED FROM THE GROUP CONSISTING OF INORGANIC MOLYBDENIUM COMPOUNDS AND MOLYBEDENYL ACETYL ACETONATE, THE TOTAL ZINC TO MOLYBEDIUM METAL WEIGHT RATIO BEING LESS THAN ABOUT 2:1 WITH THE TOTAL WEIGHT OF THE METAL IONS IN SAID MIXTURE BEING BETWEEN ABOUT 0.8 PARTS AND 10 PARTS BY WEIGHT, OR B. 0.5 TO 7 PARTS BY WEIGHT ZINC MOLYBDATE
Claim 2
Dependent Claim
146 words
A POLY(VINYL CHLORIDE) HOMOPOLYMER OR COPOLYMER RESINOUS COMPOSITION, WHEREIN SAID COPOLYMER COMPRISES A MAJOR PORTION OF VINYL CHLORIDE, CONTAINING, AS A SMOKE SUPPRESSANT, BASED ON 100 PARTS BY WEIGHT RESIN: A. A MIXTURE OF ZINC AND MOLYBDENUM COMPOUNDS CONTAINING BETWEEN ABOUT 0.2 TO 7.0 PARTS BY WEIGHT ZINC METAL FROM ZINC COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF INORGANIC ZINC COMPOUNDS AND ZINC 2-ETHYLHEXONATE AND BETWEEN ABOUT 0.3 TO 10.0 PARTS BY WEIGHT MOLYBDENUM METAL FROM MOLYBDENUM COMPOUNDS HAVING THE MOLYBDENUM ION IN THE SIX PLUS VALANCE STATE AND SELECTED FROM THE GROUP CONSISTING OF INORGANIC MOLYBDENIUM COMPOUNDS AND MOLYBEDENYL ACETYL ACETONATE, THE TOTAL ZINC TO MOLYBEDIUM METAL WEIGHT RATIO BEING LESS THAN ABOUT 2:1 WITH THE TOTAL WEIGHT OF THE METAL IONS IN SAID MIXTURE BEING BETWEEN ABOUT 0.8 PARTS AND 10 PARTS BY WEIGHT, OR B. 0.5 TO 7 PARTS BY WEIGHT ZINC MOLYBDATE
Claim 3
Dependent Claim
16 words
The resinous composition in accordance with claim 1 wherein the resin is a plasticized poly(vinyl chloride).
Claim 4
Dependent Claim
21 words
The resinous composition in accordance with claim 1 wherein the smoke suppressant is a mixture of zinc oxide and molybdenum trioxide.
Claim 5
Dependent Claim
21 words
The resinous composition in accordance with claim 1 wherein the smoke suppressant is a mixture of zinc oxide and sodium molybdate.
Claim 6
Dependent Claim
13 words
The resinous composition of claim 1 wherein the smoke suppressant is zinc molybdate.
Claim 7
Dependent Claim
13 words
The resinous composition in accordance with claim 2 wherein the plasticizer is halogenated.
Claim 8
Dependent Claim
19 words
The resinous composition of claim 2 wherein the smoke suppressant is a mixture of zinc oxide and molybdenum trioxide.
Claim 9
Dependent Claim
19 words
The resinous composition of claim 2 wherein the smoke suppressant is a mixture of zinc oxide and sodium molybdate.
Claim 10
Dependent Claim
13 words
The resinous composition of claim 2 wherein the smoke suppressant is zinc molybdate.
References Cited (Backward Citations)
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Cited
US3326832A
Cited
US3418267A
Cited
US3821151A
Cited
US3766157A
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US3819577A
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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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |