Patent US3897346A successfully refreshed from Google Patents.
US3897346A
Expired / Lapsed
US
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Flame retardant agent for synthetic plastics
Assignee: ISP Investments LLC
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Filing: 1972-06-16
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Granted: 1975-07-29
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Expires: 1992-06-16
Abstract
Abstract A flame retardant composition and process for preparing same, said composition comprising material, capable of being rendered flame retardant, in particulate form selected from the group consisting of the borates-, phosphates-, sulfamates- or oxides of zinc, magnesium, calcium, barium or aluminum, having deposited thereon from solution, a C2 6 aliphatic compound such as 2,3dibromo-1,4-butenediol.
Inventors
- 👤 Calvin Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02; C08K9/00; C08K9/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
A FIRE RETARDANT ADDITIVE COMPRISING A POLYBROMINATED C2-C6 ALIPHATIC COMPOUND AND AN INORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE BORATES-, PHOSPHATES SULPHA/ MATES AND OXIDES OF ZINC MAGNESIUM CALCIUM BARIUM AND ALUMINUM.
Claim 2
Dependent Claim
34 words
A FIRE RETARDANT ADDITIVE COMPRISING A POLYBROMINATED C2-C6 ALIPHATIC COMPOUND AND AN INORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF THE BORATES-, PHOSPHATES SULPHA/ MATES AND OXIDES OF ZINC MAGNESIUM CALCIUM BARIUM AND ALUMINUM.
Claim 3
Dependent Claim
15 words
A fire retardant additive according to claim 1, wherein said compound is a dibrominated diol.
Claim 4
Dependent Claim
24 words
A fire retardant additive according to claim 1, wherein said compound is selected from the group consisting of polybrominated alkanediols and polybrominated alkene diols.
Claim 5
Dependent Claim
22 words
A fire retardant additive according to claim 3 wherein said compound is selected from the group consisting of 2,3-dibromo-1, 4-butanediol and 2,3-dibromo-1,4-butenediol.
Claim 6
Dependent Claim
15 words
A fire retardant additive according to claim 1 wherein said inorganic material is zinc borate.
Claim 7
Dependent Claim
24 words
A fire retardant additive according to claim 1 wherein the ratio of said inorganic material to said compound is from about 1:5 to 1:1.
Claim 8
Dependent Claim
23 words
A process for preparing a fire retardant additive according to claim 1, comprising adding said inorganic material to a solution containing said compound.
Claim 9
Dependent Claim
22 words
A process according to claim 7 wherein the solvent of said solution is selected from the group consisting of water and xylene.
Claim 10
Dependent Claim
13 words
A process according to claim 8 wherein said compound is a dibrominated diol.
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) | 1978-07-28 | 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 |