US3715310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retardant compositions
Assignee: BXL Plastics Ltd
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Filing: 1968-07-17
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Granted: 1973-02-06
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Expires: 1988-07-17
Abstract
Abstract A fire-retardant composition comprising (a) a halogensubstituted aromatic hydroxy compound and (b) a phosphorus- or antimony-containing compound, for instance, a bromo-phenol and an aromatic phosphate, is especially well suited for incorporation, conveniently in a resin varnish, into laminates. The resulting laminates are particularly useful for electrical applications.
Inventors
- 👤 E Butcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A mixture containing as essential ingredients thereof (a) tetrabromo bisphenol A and (b) a compound selected from the group consisting of aliphatic phosphorus-containing compounds, aromatic phosphorus-containing compounds, antimony trioxide, and mixtures thereof, which mixture retains its fire-retardant properties after being heated to a temperature of 150* - 170*C. for about 1 hour.
Claim 2
Dependent Claim
52 words
A mixture containing as essential ingredients thereof (a) tetrabromo bisphenol A and (b) a compound selected from the group consisting of aliphatic phosphorus-containing compounds, aromatic phosphorus-containing compounds, antimony trioxide, and mixtures thereof, which mixture retains its fire-retardant properties after being heated to a temperature of 150* - 170*C. for about 1 hour.
Claim 3
Dependent Claim
61 words
A mixture containing as essential ingredients thereof (a) a compound selected from the group consisting of ortho-bromophenol, para-bromophenol, mixtures of ortho- and para-bromophenol, a dibromophenol, mixtures of a bromophenol and a dibromophenol, tri-bromophenol, pentabromo p-phenyl phenol, bromocresol, and (b) trixylenyl phosphate, which mixture retains its fire-retardant properties after being heated to a temperature of 150* - 170*C. for about 1 hour.
Claim 4
Dependent Claim
61 words
A mixture containing as essential ingredients thereof (a) a compound selected from the group consisting of ortho-bromophenol, para-bromophenol, mixtures of ortho- and para-bromophenol, a dibromophenol, mixtures of a bromophenol and a dibromophenol, tri-bromophenol, pentabromo p-phenyl phenol, bromocresol, and (b) trixylenyl phosphate, which mixture retains its fire-retardant properties after being heated to a temperature of 150* - 170*C. for about 1 hour.
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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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |