US4592887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing shaped resinous articles
Assignee: Kuraray Co Ltd
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Filing: 1982-04-14
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Granted: 1986-06-03
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Expires: 2002-04-14
Abstract
Abstract Liquid curable resins, such as unsaturated polyester resins, unsaturated epoxy resins, polymethyl methacrylates, are cured in a mold, the casting surface of which, is made of a vinyl alcohol-olefin copolymer to produce a shaped resinous article with an improved and even surface gloss.
Inventors
- 👤 Satoshi Bando
- 👤 Hirokuni Tanii
- 👤 Yoshio Ohfuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:37
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C39/00; B29C39/003; B29C39/006; B29K; B29K2033/00; B29K2033/04; B29K2063/00; B29K2067/00; B29K2067/06; B29K2995/00; B29K2995/0018; B29K2995/0022; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
50 words
A method for producing a shaped resinous article exhibiting even surface gloss comprising pouring a liquid curable resin into a mold having a coating surface comprising a vinyl alcohol-olefin copolymer containing 40 to 90 mole percent of vinyl alcohol, curing said resin therein and removing the resulting shaped resinous article.
Claim 2
Independent Claim
50 words
A method for producing a shaped resinous article exhibiting even surface gloss comprising pouring a liquid curable resin into a mold having a coating surface comprising a vinyl alcohol-olefin copolymer containing 40 to 90 mole percent of vinyl alcohol, curing said resin therein and removing the resulting shaped resinous article.
Claim 3
Dependent Claim
21 words
A method of producing a shaped resinous article as defined in claim 1 wherein said liquid curable resin contains a filler.
Claim 4
Dependent Claim
39 words
A method of producing a shaped resinous article as defined in claim 2 wherein said filler is used in a proportion of 80 to 1000 parts by weight based on 100 parts by weight of the liquid curable resin.
Claim 5
Dependent Claim
39 words
A method of producing a shaped resinous article as defined in claim 1 wherein said liquid curable resin is selected from the group consisting of unsaturated polyester resins, unsaturated epoxy resins, and mixtures of vinyl monomers with polymers thereof.
Claim 6
Dependent Claim
34 words
A method of producing a shaped resinous article as claimed in claim 1 wherein said liquid curable resin is a low-shrinkage resin having a cure volume reduction rate of not more than 3 percent.
Claim 7
Dependent Claim
27 words
A method of producing a shaped resinous article as claimed in claim 1 wherein said liquid curable resin is an unsaturated polyester resin containing a thermoplastic resin.
Claim 8
Dependent Claim
27 words
A method of producing a shaped resinous article as claimed in claim 1 wherein said liquid curable resin is an unsaturated epoxy resin containing a thermoplastic resin.
Claim 9
Independent Claim
39 words
A method of producing a shaped resinous article as claimed in claims 6 or 7 wherein said thermoplastic resin is a polymer selected from the group consisting of styrene polymers, methacrylate polymers, saturated polyester polymers and vinyl acetate polymers.
Claim 10
Dependent Claim
35 words
A method of producing a shaped resinous article as defined in claim 1 wherein said liquid curable resin is an unsaturated polyester or unsaturated epoxy resin containing a thermoplastic resin and a dispersing agent therefor.
Claim 11
Dependent Claim
27 words
A method of producing a shaped resinous article as defined in claim 1 wherein said liquid curable resin is a mixture of methyl methacrylate and polymethyl methacrylate.
Claim 12
Independent Claim
32 words
A method of producing a shaped resinous article as defined in claims 1, 2, 3, 4, 5, 6, 7, 9 or 10 wherein said vinyl alcohol-olefin copolymer is a vinyl alcohol-ethylene copolymer.
Claim 13
Independent Claim
41 words
A method of producing a shaped resinous article as defined in claims 1, 2, 3, 4, 5, 6, 9 or 10 wherein said mold comprises a laminate of a plurality of polymers with its casting surface comprising a vinyl alcohol-olefin copolymer.
Claim 14
Independent Claim
35 words
A method of producing a shaped resinous article as defined in claims 1, 2, 3, 4, 5, 6, 7, 9 or 10 wherein said mold is a mold made entirely of a vinyl alcohol-olefin copolymer.
Claim 15
Independent Claim
39 words
A method of producing a shaped resinous article as defined in claims 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 wherein said vinyl alcohol-olefin copolymer has a water content of not more than 5.5 weight percent.
Claim 16
Independent Claim
39 words
A method of producing a shaped resinous article as defined in claims 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 wherein said vinyl alcohol-olefin copolymer has a water content of not more than 4 weight percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |