Patent US3950307A successfully refreshed from Google Patents.
US3950307A
Expired / Lapsed
US
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Halobenzoyl tetrahalophthalimides
Assignee: Great Lakes Chemical Corp
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Filing: 1975-03-10
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Granted: 1976-04-13
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Expires: 1995-03-10
Abstract
Abstract This invention discloses fire retardant chemical compounds of the formula ##SPC1## Wherein X and Y are each chlorine or bromine and n is an integer from 2 to 5 which are useful in polymeric compositions.
Inventors
- 👤 Sidney B. Richter
- 👤 Glendon D. Kyker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:39
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
24 words
A compound of the formula ##SPC5## wherein X and Y are each chlorine or bromine and n is an integer from 2 to 5.
Claim 2
Dependent Claim
24 words
A compound of the formula ##SPC5## wherein X and Y are each chlorine or bromine and n is an integer from 2 to 5.
Claim 3
Dependent Claim
6 words
The compound of claim 1, N-(2,4-dichlorobenzoyl)-3,4,5,6-tetrachlorophthalimide.
Claim 4
Dependent Claim
6 words
The compound of claim 1, N-(2,5-dichlorobenzoyl)-3,4,5,6-tetrabromophthalimide.
Claim 5
Dependent Claim
6 words
The compound of claim 1, N-(2,3,5-trichlorobenzoyl)-3,4,5,6-tetrabromophthalimide.
Claim 6
Dependent Claim
6 words
The compound of claim 1, N-(2,4,6-tribromobenzoyl)-3,4,5,6-tetrachlorophthalimide.
Claim 7
Dependent Claim
6 words
The compound of claim 1, N-(pentabromobenzoyl)-3,4,5,6-tetrabromophthalimide.
Claim 8
Dependent Claim
20 words
A fire retardant polymeric composition comprising a combustible polymer and a fire retarding amount of the compound of claim 1.
Claim 9
Dependent Claim
11 words
The composition of claim 7 wherein the combustible polymer is polystyrene.
Claim 10
Dependent Claim
11 words
The composition of claim 7 wherein the combustible polymer is polyethylene.
Claim 11
Dependent Claim
17 words
The composition of claim 7 wherein the combustible polymer is a terepolymer of acrylonitrile, butadiene and styrene.
Claim 12
Dependent Claim
11 words
The composition of claim 7 wherein the combustible polymer is polypropylene.
Claim 13
Dependent Claim
12 words
The composition of claim 7 wherein the combustible polymer is a polyester.
Claim 14
Dependent Claim
31 words
The composition of claim 7 which contains from about 1 to about 35% by weight of an adjuvant selected from the group consisting of antimony trioxide, zinc borate and lead arsenate.
References Cited (Backward Citations)
JPS4727138U
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |