Patent US4525498A successfully refreshed from Google Patents.
US4525498A
Expired / Lapsed
US
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Polyester fiber reinforced molding compounds
Assignee: Union Carbide Corp
•
Filing: 1984-01-12
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Granted: 1985-06-25
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Expires: 2004-01-12
Abstract
Abstract Polyester fiber reinforced molding compounds containing low profile additives afford moldings with improved surface appearance by the addition of epoxy compounds essentially free of reactive unsaturation.
Inventors
- 👤 Kenneth E. Atkins
- 👤 Robert R . Gentry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
58 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule, said epoxy compound being essentially free of reactive unsaturation.
Claim 2
Dependent Claim
58 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule, said epoxy compound being essentially free of reactive unsaturation.
Claim 3
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound has the structure ##STR12##
Claim 4
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound has the formula ##STR13##
Claim 5
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound has the formula: ##STR14##
Claim 6
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound has the structure: ##STR15##
Claim 7
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound has the structure: ##STR16##
Claim 8
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound is epoxidized pentaerythritol tetratallate.
Claim 9
Dependent Claim
14 words
Composition claimed in claim 1 wherein the epoxy compound is epoxidized soy bean oil.
Claim 10
Dependent Claim
12 words
Composition claimed in claim 1 wherein the epoxy compound is octyl epoxytallate.
Claim 11
Dependent Claim
13 words
Composition claimed in claim 1 wherein the epoxy compound is epoxidized linseed oil.
Claim 12
Dependent Claim
15 words
Composition claimed in claim 1 containing a thickening amount of a chemically active thickening agent.
Claim 13
Dependent Claim
12 words
Composition claimed in claim 11 wherein the thickening agent is magnesium oxide.
Claim 14
Dependent Claim
14 words
Composition claimed in claim 1 wherein the low profile additive is a polyvinyl acetate.
Claim 15
Dependent Claim
13 words
Composition claimed in claim 11 containing a carboxylated polyvinyl acetate low profile additive.
Claim 16
Dependent Claim
9 words
Composition claimed in claim 1 containing a reinforcing filler.
Claim 17
Dependent Claim
12 words
Composition claimed in claim 15 wherein the reinforcing filler is glass fiber.
Claim 18
Dependent Claim
10 words
Composition claimed in claim 1 containing a rubber or elastomer.
Claim 19
Dependent Claim
10 words
A molded article produced from the composition of claim 1.
Claim 20
Dependent Claim
52 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule selected from ##STR17##
Claim 21
Dependent Claim
52 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule selected from ##STR17##
Claim 22
Dependent Claim
52 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule selected from ##STR18##
Claim 23
Dependent Claim
52 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule selected from ##STR18##
Claim 24
Dependent Claim
86 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule and having the formula ##STR19## wherein n is an integer representing the number of repeating units and has a value of 0 to about 10 and Z is an arylene radical having 6 to about 20 carbons.
Claim 25
Dependent Claim
86 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule and having the formula ##STR19## wherein n is an integer representing the number of repeating units and has a value of 0 to about 10 and Z is an arylene radical having 6 to about 20 carbons.
Claim 26
Dependent Claim
64 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule selected from epoxidized pentaerythritol tetratallate, epoxidized soy bean oil, octyl epoxytallate and epoxidized linseed oil.
Claim 27
Dependent Claim
64 words
In a low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, the improvement which comprises incorporating into said mixture an epoxy compound having at least one 1,2-epoxy group per molecule selected from epoxidized pentaerythritol tetratallate, epoxidized soy bean oil, octyl epoxytallate and epoxidized linseed oil.
Claim 28
Dependent Claim
40 words
A composition for use in molding applications comprising a thermoplastic polymer low profile additive, an ethylenically unsaturated polymerizable monomer and an epoxy compound having at least one 1,2-epoxy group per molecule, said epoxy compound being essentially free of reactive unsaturation.
Claim 29
Dependent Claim
40 words
A composition for use in molding applications comprising a thermoplastic polymer low profile additive, an ethylenically unsaturated polymerizable monomer and an epoxy compound having at least one 1,2-epoxy group per molecule, said epoxy compound being essentially free of reactive unsaturation.
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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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |