Patent US3711563A successfully refreshed from Google Patents.
US3711563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of halogenated halocyclopentadiene adducts of styrene
Assignee: Hooker Chemical Corp
•
Filing: 1970-06-29
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Granted: 1973-01-16
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Expires: 1990-06-29
Abstract
Abstract A process is described for preparing halogenated halocyclopentadiene adducts of styrene by reacting a styrene derivative with a halogenated cyclopentadiene in a Diels-Alder reaction, and then halogenating the aromatic ring to contain between 1 and 5 halogen atoms. The resulting compounds are useful as fire retardant additives in various elastomers and plastics, especially acrylonitrilebutadiene-styrene (ABS).
Inventors
- 👤 R Carlson
- 👤 J Dever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:04
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/06; C09K21/08; C09K21/14; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
9 words
The compound of claim 1 wherein X is chlorine.
Claim 2
Dependent Claim
9 words
The compound of claim 1 wherein Y is chlorine.
Claim 3
Dependent Claim
11 words
The compound of claim 1 wherein X and Y are chlorine.
Claim 4
Dependent Claim
9 words
The compound of claim 1 wherein R is hydrogen.
Claim 5
Dependent Claim
9 words
The compound of claim 1 wherein R'' is hydrogen.
Claim 6
Dependent Claim
14 words
The compound of claim 1 wherein X'' is a mixture of chlorine and bromine.
Claim 7
Dependent Claim
9 words
The compound of claim 1 wherein X'' is chlorine.
Claim 8
Dependent Claim
9 words
The compound of claim 1 wherein X'' is bromine.
Claim 9
Dependent Claim
11 words
The compound of claim 7 wherein X and Y are chlorine.
Claim 10
Dependent Claim
11 words
The compound of claim 9 wherein X and Y are chlorine.
Claim 11
Dependent Claim
11 words
The compound of claim 10 wherein X and Y are chlorine.
Claim 12
Dependent Claim
8 words
The compound of claim 1 of the structure
Claim 13
Dependent Claim
8 words
The compound of claim 1 of the structure
Claim 14
Dependent Claim
48 words
The compound of claim 7 wherein from about 10 to about 20 percent by weight of said compound contains three bromine atoms and one chlorine atom substituted on the benzene ring and from about 90 to about 80 percent by weight of said compound contains four bromine atoms.
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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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |