Patent US3864306A successfully refreshed from Google Patents.
US3864306A
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Esters of brominated dipentaerythritol and polymeric compositions containing same
Assignee: Hercules LLC
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Filing: 1972-10-24
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Granted: 1975-02-04
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Expires: 1992-10-24
Abstract
Abstract Aliphatic and aromatic esters of polybrominated dipentaerythritol such as for example, the diacetate of tetrabromodipentaerythritol, the diacetate of dibromoerythritol and the dibenzoate of tribromodipentaerythritol are described. The esters are useful as flameproofing agents for synthetic resins and can be prepared by hydrobrominating dipentaerythritol in the acid which is to be used for esterification.
Inventors
- 👤 Steffen F Dieckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
A FLAME RETARDANT COMPOSITION COMPRISING A BLEND OF A READILY FLAMMABLE POLYOLEFIN, POLYESTER, POLYAMIDE OR POLYURETHANE AND AS A FLAME RETARDANT, BASED ON THE WEIGHT OF THE COMPOSITION FROM ABOUT 3 TO ABOUT 15 PERCENT OF A BROMINE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
42 words
A FLAME RETARDANT COMPOSITION COMPRISING A BLEND OF A READILY FLAMMABLE POLYOLEFIN, POLYESTER, POLYAMIDE OR POLYURETHANE AND AS A FLAME RETARDANT, BASED ON THE WEIGHT OF THE COMPOSITION FROM ABOUT 3 TO ABOUT 15 PERCENT OF A BROMINE COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein, the bromine compound is the dibenzoate of triBromodipentaerythritol.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein the bromine compound is the diacetate of tetrabromodipentaerythritol.
Claim 5
Dependent Claim
10 words
The composition of claim 3 wherein the polyolefin is polypropylene.
Claim 6
Dependent Claim
10 words
The composition of claim 3 wherein the polyolefin is polystyrene.
Claim 7
Dependent Claim
12 words
The composition of claim 3 wherein the polyester is an unsaturated polyester.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |