Patent US3897389A successfully refreshed from Google Patents.
US3897389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant compositions
Assignee: M&T Chemicals Inc
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Filing: 1971-03-15
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Granted: 1975-07-29
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Expires: 1991-03-15
Abstract
Abstract Antimony containing flame retardant compositions are provided for resins having reduced antimony content simultaneous with enhanced flame retarding efficiency, and consisting of sodium antimonate the particle size of which is within the range of between about 0.1-8 microns. In addition, an enhanced sodium antimonate flame retardant composition is provided by neutralizing the above noted sodium antimonate composition in the presence of an acid to a pH within the range of between about 6.8 and 7. Also provided are resins having improved flame retarding characteristics while simultaneously having improved color stability including reduced yellowness indices and sustained clarity.
Inventors
- 👤 Irving Touval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:07
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
61 words
A HALOGEN-CONTAINNG MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) PALOGEN-CONTAINING POLYMERS WHICH ARE IN TURN SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS AND COPOLYMERS OF VINYL CHLORIDE AND HALOGEN-CONTAINING POLOLEFINS AND (B) COMBINATIONS OF NONHALOGENATED POLYMERS WITH AN ORGANIC HALOGEN SOURCE, SAID NON-HALOGENATED POLYMERS BEING IN TURN SELECTED FROM THE GROUP CONSISTNG OF POLYESTERS AND POLYMERIZED ETHYLENICALLY UNSATURATED HYDROCARBONS, AND
Claim 2
Dependent Claim
61 words
A HALOGEN-CONTAINNG MATERIAL SELECTED FROM THE GROUP CONSISTING OF (A) PALOGEN-CONTAINING POLYMERS WHICH ARE IN TURN SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS AND COPOLYMERS OF VINYL CHLORIDE AND HALOGEN-CONTAINING POLOLEFINS AND (B) COMBINATIONS OF NONHALOGENATED POLYMERS WITH AN ORGANIC HALOGEN SOURCE, SAID NON-HALOGENATED POLYMERS BEING IN TURN SELECTED FROM THE GROUP CONSISTNG OF POLYESTERS AND POLYMERIZED ETHYLENICALLY UNSATURATED HYDROCARBONS, AND
Claim 3
Dependent Claim
12 words
A RESIN COMPOSITION POSSESSING ENHANCED FLAME RETARDANT CHARACTERISTICS AND CONTAINING ESSENTIALLY OF
Claim 4
Dependent Claim
12 words
A RESIN COMPOSITION POSSESSING ENHANCED FLAME RETARDANT CHARACTERISTICS AND CONTAINING ESSENTIALLY OF
Claim 5
Dependent Claim
31 words
A FLAME-REACTING AMOUNT OF SODIUM ANITMONATE, THE PARTICLES OF WHICH EXHIBIT AN AVERAGE SIZE OF ABOUT 1.5 MICRON, THE SIZE OF THE INDIVIDUAL PARTICLES BEING BETWEEN ABOUT 0.1 AND 8 MICRONS.
Claim 6
Dependent Claim
31 words
A FLAME-REACTING AMOUNT OF SODIUM ANITMONATE, THE PARTICLES OF WHICH EXHIBIT AN AVERAGE SIZE OF ABOUT 1.5 MICRON, THE SIZE OF THE INDIVIDUAL PARTICLES BEING BETWEEN ABOUT 0.1 AND 8 MICRONS.
Claim 7
Dependent Claim
31 words
a flame-retarding amount of sodium antimonate, the particles of which exhibit an average size of about 1.5 micron, the size of the individual particles being between about 0.1 and 8 microns.
Claim 8
Dependent Claim
31 words
a flame-retarding amount of sodium antimonate, the particles of which exhibit an average size of about 1.5 micron, the size of the individual particles being between about 0.1 and 8 microns.
Claim 9
Dependent Claim
28 words
A composition as claimed in claim 1 in which the said sodium antimonate is neutral, the pH thereof being within the range of between about 6.8 and 7.
Claim 10
Dependent Claim
35 words
A composition as described in claim 1 in which said sodium antimonate is introduced into said resin in the amount within the range of between about 0.5 to 7 parts per one hundred parts resin.
Claim 11
Dependent Claim
35 words
A composition as described in claim 3 in which said sodium antimonate is introduced into said resin in the amount within the range of between about 1 to 5 parts per one hundred parts resin.
Claim 12
Dependent Claim
13 words
A composition as recited in claim 1 in which said resin is polyethylene.
Claim 13
Dependent Claim
14 words
a composition as recited in claim 1 in which said resin is polyvinyl chloride.
Claim 14
Dependent Claim
13 words
A composition as recited in claim 2 in which said resin is polyethylene.
Claim 15
Dependent Claim
14 words
A composition as recited in claim 2 in which said resin is polyvinyl chloride.
References Cited (Backward Citations)
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US3158588A
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US3205196A
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US3133037A
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US3418263A
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |