Patent US4331735A successfully refreshed from Google Patents.
US4331735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One component in-mold coating
Assignee: Omnova Services Inc
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Filing: 1981-05-20
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Granted: 1982-05-25
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Expires: 2001-05-20
Abstract
Abstract An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms or being essentially free of isocyanate groups and (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH 2 , --NH-- and/or OH groups, said reaction product being free of active hydrogen atoms.
Inventors
- 👤 Henry Shanoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/672; C08G18/04; C08G18/70; C08G18/71; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536; Y10T428/31551; Y10T428/31565; Y10T428/31573; Y10T428/31576; Y10T428/31598; Y10T428/31601; Y10T428/31786; Y10T428/31794; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
203 words
The method which comprises in-mold coating a molded thermoset polyester resin or thermoset vinyl ester resin glass fiber composition containing from about 10 to 75% by weight of glass fibers with a one component thermosetting in-mold coating composition under pressure, at a temperature and for a period of time sufficient to cure said in-mold coating composition to form an adherent thermoset coating on said molded thermoset resin glass fiber composition, said in-mold coating composition comprising (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms or being essentially free of isocyanate groups, (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH 2 , --NH-- and/or --OH groups, said reaction product being free of active hydrogen atoms and (c) an organic free radical peroxide initiator in an amount sufficient to effect curing of said in-mold coating composition, said (b) being used in an amount sufficient to secure the adhesion of said coating composition to said molded thermoset resin glass fiber composition.
Claim 2
Independent Claim
203 words
The method which comprises in-mold coating a molded thermoset polyester resin or thermoset vinyl ester resin glass fiber composition containing from about 10 to 75% by weight of glass fibers with a one component thermosetting in-mold coating composition under pressure, at a temperature and for a period of time sufficient to cure said in-mold coating composition to form an adherent thermoset coating on said molded thermoset resin glass fiber composition, said in-mold coating composition comprising (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms or being essentially free of isocyanate groups, (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH 2 , --NH-- and/or --OH groups, said reaction product being free of active hydrogen atoms and (c) an organic free radical peroxide initiator in an amount sufficient to effect curing of said in-mold coating composition, said (b) being used in an amount sufficient to secure the adhesion of said coating composition to said molded thermoset resin glass fiber composition.
Claim 3
Dependent Claim
40 words
The method according to claim 1 where said crosslinkable composition is a phenyl isocyanate capped polypropylene fumarate polyester containing styrene, and where (b) is (II) in which said polyisocyanate is diphenyl methane-4,4'-diisocyanate and said ethylenically unsaturated hydroxyl compound in hydroxypropylmethacrylate.
Claim 4
Dependent Claim
40 words
The method according to claim 1 where said crosslinkable composition is a phenyl isocyanate capped bisphenol A fumarate polyester containing styrene, and where (b) is (II) in which said polyisocyanate is diphenyl-methane-4,4'-diisocyanate and said ethylenically unsaturated hydroxyl compound is hydroxypropylmethacrylate.
Claim 5
Dependent Claim
42 words
The method according to claim 1 where said crosslinkable composition is a phenyl isocyanate capped trimethylol propane trimethacrylate which contained some hydroxyl groups, and where (b) is (II) in which said polyisocyanate is diphenylmethane-4,4'-diisocyanate and said ethylenically unsaturated hydroxyl compound is hydroxypropylmethacrylate.
Claim 6
Dependent Claim
32 words
The method according to claim 1 where said crosslinkable composition is a phenyl isocyanate capped polypropylene fumarate polyester containing styrene, and where (b) is (I) in which said polyisocyanate is diphenylmethane-4,4' diisocyanate.
Claim 7
Dependent Claim
41 words
The method according to claim 1 where said crosslinkable composition is polyoxyethylene glycol dimethacrylate having a molecular weight of about 770 and where (b) is (II) in which said polyisocyanate is diphenyl methane-4,4'-diisocyanate and said ethylenically unsaturated hydroxyl compound is hydroxypropylmethacrylate.
Claim 8
Dependent Claim
9 words
The product produced by the method of claim 1.
Claim 9
Dependent Claim
9 words
The product produced by the method of claim 2.
Claim 10
Dependent Claim
9 words
The product produced by the method of claim 3.
Claim 11
Dependent Claim
9 words
The product produced by the method of claim 4.
Claim 12
Dependent Claim
9 words
The product produced by the method of claim 5.
Claim 13
Dependent Claim
9 words
The product produced by the method of claim 6.
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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) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |