Patent US5077326A successfully refreshed from Google Patents.
US5077326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyester compositions molding materials therefrom and molded products therefrom
Assignee: Japan Composite Co Ltd
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Filing: 1989-06-08
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Granted: 1991-12-31
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Expires: 2009-06-08
Abstract
Abstract A quickly curable unsaturated polyester composition with high surface quality contains an unsaturated polyester, a vinyl monomer, either an alkane polyol polyacrylate or an alkane polyol polymethylacrylate, a thermoplastic resin, and one or more curing catalysts selected from t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy) hexane. Molding compounds are obtained by impregnating glass fibers with such composition and molded products obtained by curing such molding material have improved surface smoothness.
Inventors
- 👤 Takashi Shibata
- 👤 Koichi Akiyama
- 👤 Sanzi Aoki
- 👤 Yasuhiro Mishima
- 👤 Hisayuki Iwai
- 👤 Ken Hatta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:36
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A quickly curable unsaturated polyester composition with high surface quality, comprising an unsaturated polyester as a first component, a monovinyl monomer as a second component, a third component selected from the group consisting of alkane polyol polyacrylate and alkane polyol polymethacrylate, a thermoplastic resin that can function as a low profile additive as a fourth component, and at least one hardening catalyst selected from the group consisting of t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy)hexane, said composition containing 20-40 weight parts of said first component, 40-60 weight parts of said second component, 1-15 weight parts of said third component, and 10-30 weight parts of said fourth component such that the total of said weight parts is 100 weight parts.
Claim 2
Dependent Claim
118 words
A quickly curable unsaturated polyester composition with high surface quality, comprising an unsaturated polyester as a first component, a monovinyl monomer as a second component, a third component selected from the group consisting of alkane polyol polyacrylate and alkane polyol polymethacrylate, a thermoplastic resin that can function as a low profile additive as a fourth component, and at least one hardening catalyst selected from the group consisting of t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy)hexane, said composition containing 20-40 weight parts of said first component, 40-60 weight parts of said second component, 1-15 weight parts of said third component, and 10-30 weight parts of said fourth component such that the total of said weight parts is 100 weight parts.
Claim 3
Dependent Claim
135 words
A molding material comprising glass fibers and a quickly curable unsaturated polyester composition with high surface quality impregnating said glass fibers, said unsaturated polyester composition comprising an unsaturated polyester as a first component, a monovinyl monomer as a second component, a third component selected from the group consisting of alkane polyol polyacrylate and alkane polyol polymethacrylate, a thermoplastic resin that can function as a low profile additive as a fourth component, and at least one hardening catalyst selected from the group consisting of t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy)hexane, said unsaturated polyester composition containing 20-40 weight parts of said first component, 40-60 weight parts of said second component, 1-15 weight parts of said third component, and 10-30 weight parts of said fourth component such that the total of said weight parts is 100 weight parts.
Claim 4
Dependent Claim
135 words
A molding material comprising glass fibers and a quickly curable unsaturated polyester composition with high surface quality impregnating said glass fibers, said unsaturated polyester composition comprising an unsaturated polyester as a first component, a monovinyl monomer as a second component, a third component selected from the group consisting of alkane polyol polyacrylate and alkane polyol polymethacrylate, a thermoplastic resin that can function as a low profile additive as a fourth component, and at least one hardening catalyst selected from the group consisting of t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy)hexane, said unsaturated polyester composition containing 20-40 weight parts of said first component, 40-60 weight parts of said second component, 1-15 weight parts of said third component, and 10-30 weight parts of said fourth component such that the total of said weight parts is 100 weight parts.
Claim 5
Dependent Claim
142 words
A molded product obtained by hardening a molding material which comprises glass fibers and a quickly curable unsaturated polyester composition with high surface quality impregnating said glass fibers, said unsaturated polyester composition comprising an unsaturated polyester as a first component, a monovinyl monomer as a second component, a third component selected from the group consisting of alkane polyol polyacrylate and alkane polyol polymethacrylate, a thermoplastic resin that can function as a low profile additive as a fourth component, and at least one hardening catalyst selected from the group consisting of t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy)hexane, said unsaturated polyester composition containing 20-40 weight parts of said first component, 40-60 weight parts of said second component, 1-15 weight parts of said third component, and 10-30 weight parts of said fourth component such that the total of said weight parts is 100 weight parts.
Claim 6
Dependent Claim
142 words
A molded product obtained by hardening a molding material which comprises glass fibers and a quickly curable unsaturated polyester composition with high surface quality impregnating said glass fibers, said unsaturated polyester composition comprising an unsaturated polyester as a first component, a monovinyl monomer as a second component, a third component selected from the group consisting of alkane polyol polyacrylate and alkane polyol polymethacrylate, a thermoplastic resin that can function as a low profile additive as a fourth component, and at least one hardening catalyst selected from the group consisting of t-butylperoxy benzoate, t-butylperoxy octoate and 2,5-dimethyl-2,5-di(benzoilperoxy)hexane, said unsaturated polyester composition containing 20-40 weight parts of said first component, 40-60 weight parts of said second component, 1-15 weight parts of said third component, and 10-30 weight parts of said fourth component such that the total of said weight parts is 100 weight parts.
References Cited (Backward Citations)
US4100229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |