Patent US4489184A successfully refreshed from Google Patents.
US4489184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding composition
Assignee: Wachovia Capital Finance Corp Central
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Filing: 1983-09-26
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Granted: 1984-12-18
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Expires: 2003-09-26
Abstract
Abstract This invention discloses a creep resistant thermoset molding composition which is of particular value as a material from which wheels can be made. The creep resistant molding composition of this invention is comprised of a mixture of a vinyl ester resin and a dicyclopentadiene polyester resin.
Inventors
- 👤 James A. Woelfel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:46
CPC Classifications
C; C08; C08L; C08L63/00; C08L63/10; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/04; C08F299/0478; C08K; C08K3/00; C08K3/40; C08L61/00; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
113 words
A molded vehicle wheel that exhibits excellent torque retention under conditions of high heat which comprises (1) from about 15 to about 40 weight percent of a molding composition which is comprised of from 40 to 60 weight percent of a vinyl ester resin and from 40 to 60 weight percent of a dicyclopentadiene polyester resin based on the total weight of said resins wherein said dicyclopentadiene polyester resin is a copolymer of the reaction product of a glycol, an unsaturated dicarboxylic acid or anhydride and dicyclopentadiene, (2) from about 35 to about 75 weight percent of a fiber reinforcement, and (3) from about 5 to about 40 weight percent of a filler.
Claim 2
Dependent Claim
113 words
A molded vehicle wheel that exhibits excellent torque retention under conditions of high heat which comprises (1) from about 15 to about 40 weight percent of a molding composition which is comprised of from 40 to 60 weight percent of a vinyl ester resin and from 40 to 60 weight percent of a dicyclopentadiene polyester resin based on the total weight of said resins wherein said dicyclopentadiene polyester resin is a copolymer of the reaction product of a glycol, an unsaturated dicarboxylic acid or anhydride and dicyclopentadiene, (2) from about 35 to about 75 weight percent of a fiber reinforcement, and (3) from about 5 to about 40 weight percent of a filler.
Claim 3
Dependent Claim
35 words
A wheel as specified in claim 1 wherein the vinyl ester resin is the reaction product of a polyepoxide having more than one epoxide group per molecule with an unsaturated monocarboxylic acid or mixtures thereof.
Claim 4
Dependent Claim
39 words
A wheel as set forth in claim 1, wherein said molding composition further comprises the reaction product of at least one polymerizable monomer containing at least one vinyl group with said vinyl ester resin and said dicyclopentadiene polyester resin.
Claim 5
Dependent Claim
39 words
A wheel as set forth in claim 2 wherein said molding composition further comprises the reaction product of at least one polymerizable monomer containing at least one vinyl group with said vinyl ester resin and said dicyclopentadiene polyester resin.
Claim 6
Dependent Claim
37 words
A wheel as specified in claim 3 wherein from about 10 percent to about 55 percent by weight of said polymerizable monomer is present in said molding composition based upon the total weight of said molding composition.
Claim 7
Dependent Claim
37 words
A wheel as specified in claim 5 wherein from about 20 percent to about 40 percent by weight of said polymerizable monomer is present in said molding composition based upon the total weight of said molding composition.
Claim 8
Dependent Claim
39 words
A wheel as specified in claim 5 wherein said polymerizable monomer is selected from the group consisting of styrene, alpha-methylstyrene, vinyl toluene, 3-methyl-styrene, 4-methylstyrene, 4-cyclohexylstyrene, para-chlorostyrene, 3-vinyl-alpha-methylstyrene, 4-vinyl-alpha-methylstyrene, 1-vinyl napthalene, tertiary butyl styrene, diallyl phthalate, triallyl cyanurate, and 2-vinylnapthalene.
Claim 9
Dependent Claim
19 words
A wheel as specified in claim 7 wherein said vinyl ester resin is a phenolic-novalac based vinyl ester resin.
Claim 10
Dependent Claim
55 words
A wheel as specified in claim 8 wherein said dicyclopentadiene polyester resin is a dicyclopentadiene modified copolyester of (1) at least one member selected from the group consisting of fumaric acid and maleic acid, and (2) at least one member selected from the group consisting of ethylene glycol, propylene glycol, dipropylene glycol and diethylene glycol.
Claim 11
Dependent Claim
38 words
A wheel as specified in claim 9 wherein said dicyclopentadiene polyester resin is a dicyclopentadiene modified copolyester of (1) at least one member selected from the group consisting of fumaric acid and maleic acid and (2) ethylene glycol.
Claim 12
Dependent Claim
13 words
A wheel as specified in claim 10 wherein said polymerizable monomer is styrene.
Claim 13
Dependent Claim
15 words
A wheel as specified in claim 11 wherein said fiber reinforcement is a glass fiber.
Claim 14
Dependent Claim
113 words
A molded vehicle wheel that exhibits excellent torque retention under conditions of high heat which comprises (1) from about 15 to about 40 weight percent of a molding composition which is comprised of from 30 to 70 weight percent of a vinyl ester resin and from 30 to 70 weight percent of a dicyclopentadiene polyester resin based on the total weight of said resins wherein said dicyclopentadiene polyester resin is a copolymer of the reaction product of a glycol, an unsaturated dicarboxylic acid or anhydride and dicyclopentadiene, (2) from about 35 to about 75 weight percent of a fiber reinforcement, and (3) from about 5 to about 40 weight percent of a filler.
Claim 15
Dependent Claim
113 words
A molded vehicle wheel that exhibits excellent torque retention under conditions of high heat which comprises (1) from about 15 to about 40 weight percent of a molding composition which is comprised of from 30 to 70 weight percent of a vinyl ester resin and from 30 to 70 weight percent of a dicyclopentadiene polyester resin based on the total weight of said resins wherein said dicyclopentadiene polyester resin is a copolymer of the reaction product of a glycol, an unsaturated dicarboxylic acid or anhydride and dicyclopentadiene, (2) from about 35 to about 75 weight percent of a fiber reinforcement, and (3) from about 5 to about 40 weight percent of a filler.
Claim 16
Dependent Claim
35 words
A wheel as specified in claim 13, wherein the vinyl ester resin is the reaction product of a polyepoxide having more than one epoxide group per molecule with an unsaturated monocarboxylic acid or mixtures thereof.
Claim 17
Dependent Claim
73 words
A wheel as specified in claim 13, wherein said molding composition further comprises the reaction product of at least one polymerizable monomer with said vinyl ester resin and said dicyclopentadiene polyester resin wherein said polymerizable monomer contains at least one vinyl group and wherein from about 10 percent to about 55 percent by weight of said polymerizable monomer is present in said molding composition based upon the total weight of said molding composition.
Claim 18
Dependent Claim
73 words
A wheel as specified in claim 14, wherein said molding composition further comprises the reaction product of at least one polymerizable monomer with said vinyl ester resin and said dicyclopentadiene polyester resin wherein said polymerizable monomer contains at least one vinyl group and wherein from about 10 percent to about 55 percent by weight of said polymerizable monomer is present in said molding composition based upon the total weight of said molding composition.
Claim 19
Dependent Claim
22 words
A wheel as specified in claim 15, wherein said polymerizable monomer is styrene and wherein said fiber reinforcement is a fiber glass.
Claim 20
Dependent Claim
22 words
A wheel as specified in claim 16, wherein said polymerizable monomer is styrene and wherein said fiber reinforcement is a fiber glass.
Claim 21
Dependent Claim
38 words
A wheel as specified in claim 18, wherein said dicyclopentadiene polyester resin is a dicyclopentadiene modified copolyester of (1) at least one member selected from the group consisting of fumaric acid and maleic acid and (2) ethylene glycol.
Claim 22
Dependent Claim
18 words
A wheel as specified in claim 19, wherein said vinyl ester resin is phenolic-novalac based vinyl ester resin.
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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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |