Patent US3879345A successfully refreshed from Google Patents.
US3879345A
Expired / Lapsed
US
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Self-extinguishing polystyrene resin composition
Assignee: Daicel Corp
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Filing: 1973-09-06
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Granted: 1975-04-22
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Expires: 1993-09-06
Abstract
Abstract A self-extinguishing polystyrene resin composition characterized by containing a mixture of (a) tricresyl phosphate and/or triphenyl phosphate and (b) tetrabromobisphenol A in a molar ratio of 8:2 - 1:9 in such an amount that equimolar mixture of components (a) and (b) is contained in an amount of at least 2% by weight in the polystyrene resin composition.
Inventors
- 👤 Shogi Furukawa
- 👤 Yuzo Sonoyama
- 👤 Akira Ohi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/136; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
47 words
A self-extinguishing resin composition consisting essentially of A. polystyrene resin, and B. flame retarding agent in an amount of at least 2% by weight and sufficient to impart a self-extinguishing property to the resin composition, said flame retarding agent consisting essentially of a substantially equimolar mixture of
Claim 2
Dependent Claim
47 words
A self-extinguishing resin composition consisting essentially of A. polystyrene resin, and B. flame retarding agent in an amount of at least 2% by weight and sufficient to impart a self-extinguishing property to the resin composition, said flame retarding agent consisting essentially of a substantially equimolar mixture of
Claim 3
Dependent Claim
16 words
a material selected from the group consisting of tricresyl phosphate, triphenyl phosphate and mixtures thereof, and
Claim 4
Dependent Claim
16 words
a material selected from the group consisting of tricresyl phosphate, triphenyl phosphate and mixtures thereof, and
Claim 5
Dependent Claim
47 words
A SELF-EXTINGUISHING RESIN COMPOSITION CONSISTING ESSENTIALLY OF A. POLYSTYRENE RESIN, AND B. FLAME RETARDING AGENT IN AN AMOUNT OF AT LEAST 2% BY WEIGHT AND SUFFICIENT TO IMPART A SELF-EXTINGUISHING PROPERTY TO THE RESIN COMPOSITION, SAID FLAME RETARDING AGENT CONSISTING ESSENTIALLY OF A SUBSTANTIALLY EQUIMOLR MIXTURE OF
Claim 6
Dependent Claim
47 words
A SELF-EXTINGUISHING RESIN COMPOSITION CONSISTING ESSENTIALLY OF A. POLYSTYRENE RESIN, AND B. FLAME RETARDING AGENT IN AN AMOUNT OF AT LEAST 2% BY WEIGHT AND SUFFICIENT TO IMPART A SELF-EXTINGUISHING PROPERTY TO THE RESIN COMPOSITION, SAID FLAME RETARDING AGENT CONSISTING ESSENTIALLY OF A SUBSTANTIALLY EQUIMOLR MIXTURE OF
Claim 7
Dependent Claim
15 words
A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TRICRESYL PHOSPHATE,TRIPHENYL PHOSPHATE AND MIXTURES THEREOF, AND
Claim 8
Dependent Claim
15 words
A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TRICRESYL PHOSPHATE,TRIPHENYL PHOSPHATE AND MIXTURES THEREOF, AND
Claim 9
Dependent Claim
2 words
TETRABROMOBISPHENOL A.
Claim 10
Dependent Claim
2 words
TETRABROMOBISPHENOL A.
Claim 11
Dependent Claim
2 words
tetrabromobisphenol A.
Claim 12
Dependent Claim
2 words
tetrabromobisphenol A.
Claim 13
Dependent Claim
32 words
A self-extinguishing resin composition according to claim 1, in which the total amount of flame-retarding agent does not exceed 25 percent by weight, based on the total weight of the resin composition.
Claim 14
Dependent Claim
32 words
A self-extinguishing resin composition according to claim 1, in which the total amount of flame-retarding agent does not exceed 20 percent by weight, based on the total weight of the resin composition.
Claim 15
Dependent Claim
19 words
A self-extinguishing resin composition according to claim 1, in which the flame-retarding agent is blended in the polystyrene resin.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |