US4026963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(o or p-thiophenyl) substituted polyhalo-5-norbornene-2,3,-dicarboximide flame retardants and polymers containing said imides
Assignee: Uniroyal Chemical Co Inc
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Filing: 1975-08-21
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Granted: 1977-05-31
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Expires: 1995-08-21
Abstract
Abstract This invention relates to N-(o- or p-thiophenyl) substituted polyhalo-5-norbornene-2,3-dicarboximides, their preparation via a one-step process and their use as flame retardants for polyurethane elastoplastics and other polymeric materials.
Inventors
- 👤 Yong Sung Rim
- 👤 Walter Nudenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
22 words
A compound having the formula: ##STR5## wherein R is H or ##STR6## and RS-- is in the ortho- or the para- position.
Claim 2
Dependent Claim
22 words
A compound having the formula: ##STR5## wherein R is H or ##STR6## and RS-- is in the ortho- or the para- position.
Claim 3
Dependent Claim
6 words
A compound having the formula: ##STR7##
Claim 4
Dependent Claim
6 words
A compound having the formula: ##STR7##
Claim 5
Dependent Claim
6 words
A compound having the formula: ##STR8##
Claim 6
Dependent Claim
6 words
A compound having the formula: ##STR8##
Claim 7
Dependent Claim
6 words
A compound having the formula: ##STR9##
Claim 8
Dependent Claim
6 words
A compound having the formula: ##STR9##
Claim 9
Dependent Claim
6 words
A compound having the formula: ##STR10##
Claim 10
Dependent Claim
6 words
A compound having the formula: ##STR10##
Claim 11
Dependent Claim
45 words
A flame retardant polymeric composition comprising a polyurethane elastoplastic, from about 5 to about 50% by weight, based on the total composition, of a compound of claim 1 and from about 5 to about 50% by weight, based on the total composition, of chlorinated polyethylene.
Claim 12
Dependent Claim
38 words
The composition of claim 6 also containing from about 1 to about 30% by weight, based on the total composition, of a metallic compound wherein the metal is selected from the group consisting of antimony, arsenic and bismuth.
Claim 13
Dependent Claim
42 words
The composition of claim 6 in which are present from about 1 to about 30% by weight, based on the total composition, of antimony trioxide and from about 5 to about 50% by weight, based on the total composition, of chlorinated polyethylene.
Claim 14
Dependent Claim
21 words
The composition of claim 6 in which is present about 20% by weight, based on the total composition, of chlorinated polyethylene.
References Cited (Backward Citations)
US2130242A
Cited
US2795589A
Cited
US3542805A
Cited
US3574230A
Cited
US3748340A
Cited
US3884849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |