US4046740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel polyester compositions
Assignee: BP Chemicals Ltd
•
Filing: 1976-04-20
•
Granted: 1977-09-06
•
Expires: 1996-04-20
Abstract
Abstract Unsaturated polyester resin compositions contain an amine accelerator of formula ##STR1## wherein R 1 and R 2 are alkyl, hydroxyalkyl or carboxyalkyl groups and R 3 , R 4 and R 5 are alkyl, aralkyl, cycloalkyl, alkoxy or halogen groups.
Inventors
- 👤 Peter Robert Thornburrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:08
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0442; C08F299/0457
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
An unsaturated polyester resin composition which comprises an unsaturated polyester, a soluble cobalt salt, an amine accelerator having the formula ##STR3## where R 1 , R 2 are selected from the radicals alkyl, hydroxyalkyl and carboxy alkyl groups and R 3 , R 4 and R 5 are selected from the radicals alkyl, aralkyl, cycloalkyl, alkoxy and halogen groups, and a peroxy initiator that is accelerated by said amine.
Claim 2
Dependent Claim
69 words
An unsaturated polyester resin composition which comprises an unsaturated polyester, a soluble cobalt salt, an amine accelerator having the formula ##STR3## where R 1 , R 2 are selected from the radicals alkyl, hydroxyalkyl and carboxy alkyl groups and R 3 , R 4 and R 5 are selected from the radicals alkyl, aralkyl, cycloalkyl, alkoxy and halogen groups, and a peroxy initiator that is accelerated by said amine.
Claim 3
Dependent Claim
49 words
An unsaturated polyester resin composition as claimed in claim 1 wherein the polyester is a condensation product of a glycol with a mixture of a substance selected from an α, β-unsaturated dibasic acid and its anhydride together with a substance selected from a saturated dibasic acid and its anhydride.
Claim 4
Dependent Claim
23 words
An unsaturated polyester resin composition as claimed in claim 1 wherein the soluble cobalt salt is selected from cobalt octoate and cobalt naphthenate.
Claim 5
Dependent Claim
21 words
An unsaturated polyester resin composition as claimed in claim 1 wherein the amine accelerator is selected from N,N-dimethyl-2,4,6-trimethylaniline, and N,N-di(hydroxypropyl)-2,4,6-trimethyl aniline.
Claim 6
Dependent Claim
30 words
An unsaturated polyester resin composition as claimed in claim 1 wherein the peroxy initiator is selected from methyl ethyl ketone peroxide, acetylacetone peroxide, cyclohexanone peroxide and methyl isobutyl ketone peroxide.
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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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |