US4117041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polymeric compositions
Assignee: EIDP Inc
•
Filing: 1977-09-30
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Granted: 1978-09-26
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Expires: 1997-09-30
Abstract
Abstract Oligomers of (substituted phenoxy)cyclotriphosphazenes and aromatic diols render polymers such as polyesters, polyolefins, etc., in the form of fibers, films and other shapes permanently flame retardant.
Inventors
- 👤 Randolph Joseph Guschl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:01
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; C08G79/025; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; C07F9/65815; C08K; C08K5/00; C08K5/49; C08K5/5399; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
54 words
A compound of the formula ##STR10## wherein each of R 1 to R 10 is a substituent of the formula ##STR11## where X 3 is hydrogen, bromine and chlorine, and R 11 is a linking group derived from bisphenol A, resorcinol, hydroquinone, bisphenol S and p,p'-dihydroxybiphenyl, and n is the number 1 or greater.
Claim 2
Dependent Claim
54 words
A compound of the formula ##STR10## wherein each of R 1 to R 10 is a substituent of the formula ##STR11## where X 3 is hydrogen, bromine and chlorine, and R 11 is a linking group derived from bisphenol A, resorcinol, hydroquinone, bisphenol S and p,p'-dihydroxybiphenyl, and n is the number 1 or greater.
Claim 3
Dependent Claim
13 words
A compound of claim 1 in which X 3 is bromine or chlorine.
Claim 4
Dependent Claim
11 words
A compound of claim 2 in which X 3 is bromine.
Claim 5
Dependent Claim
19 words
A compound of claim 1 represented by the formula ##STR12## where n is a number from 1 to 10.
Claim 6
Dependent Claim
14 words
A compound of claim 4 where n is a number from 1 to 2.
Claim 7
Dependent Claim
19 words
A compound of claim 1 represented by the formula ##STR13## where n is a number from 1 to 10.
References Cited (Backward Citations)
US3468981A
Cited
US4029634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |