US4325841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-free-amine promoter system for polyester composition
Assignee: Beazer East Inc
•
Filing: 1980-09-09
•
Granted: 1982-04-20
•
Expires: 2000-09-09
Abstract
Abstract Gel-time drift may be reduced in promoted polyester resin systems by incorporation of an amine salt in accordance with the disclosed compositions and methods. The amine salt is a salt-like reaction product of an amine and a carboxylic acid-containing moiety. For free-amine type promoted resin systems, an amine salt may be substituted for the amine promotor to provide a low-energy curable polyester resin system having the advantages of a promoted system as well as being stabilized against gel-time drift. Comparative data show suppression of gel-time drift of resin samples containing an amine salt to as low as 7 percent of gel-time drift of counterpart free-amine promoted resin system samples.
Inventors
- 👤 Hilda Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:56
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0442; C08F299/0464; C08F299/0457; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A non-free-amine type promoter system for promoting the polymerization of a free-radical catalyzed polyester composition, the promoter system comprising a first promoter and a second promoter, said first promoter provided by a salt-like reaction product of an amine and an aromatic dicarboxylic acid, said promoter system further characterized in providing a promoted curable polyester composition having a gel-time drift which is suppressed during the useable shelf-life of the polyester composition as compared to a counterpart free-amine promoted polyester composition lacking said salt-like reaction product.
Claim 2
Dependent Claim
84 words
A non-free-amine type promoter system for promoting the polymerization of a free-radical catalyzed polyester composition, the promoter system comprising a first promoter and a second promoter, said first promoter provided by a salt-like reaction product of an amine and an aromatic dicarboxylic acid, said promoter system further characterized in providing a promoted curable polyester composition having a gel-time drift which is suppressed during the useable shelf-life of the polyester composition as compared to a counterpart free-amine promoted polyester composition lacking said salt-like reaction product.
Claim 3
Dependent Claim
14 words
The promoter system of claim 1 wherein said amine is a tertiary aromatic amine.
Claim 4
Dependent Claim
13 words
The promoter system of claim 2 wherein said tertiary aromatic amine is diethylaniline.
Claim 5
Dependent Claim
14 words
The promoter system of claim 1 wherein said aromatic dicarboxylic acid is phthalic acid.
Claim 6
Dependent Claim
17 words
The promoter system of claim 1 wherein said second promoter is provided by a metal-containing organic compound.
Claim 7
Dependent Claim
16 words
The promoter system of claim 5 wherein said metal-containing organic compound is a cobalt-containing organic compound.
References Cited (Backward Citations)
US2684346A
Cited
US2646416A
Cited
GB974214A
Cited
US3398213A
Cited
GB1281891A
Cited
UST942003I4
Cited
SU535317A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |