US5089544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyester resin compositions containing compatible compounds
Assignee: AOC LLC
•
Filing: 1989-10-30
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Granted: 1992-02-18
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Expires: 2009-10-30
Abstract
Abstract A sheet molding composition is disclosed which includes a four component resinous system which comprises (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile additives which are thermoplastic polymers which cause phase separation and porosity during the curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester; and, (d) one or more compatible components containing one or more polyoxyethane substituents. The compatible components remain compatible when the polyester and monomer cure and impart improved surface characteristics when added to typical low-profile resin systems.
Inventors
- 👤 Louis R. Ross
- 👤 Paul R. Krumlauf
- 👤 Edward L. Wilson
- 👤 Kuang-Hong Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:18
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
170 words
A four component resinous system for a sheet molding composition comprising: (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile thermoplastic polymers which cause phase separation and porosity during a curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester, and, (d) one or more compatible components containing one or more polyoxyethane substituents having a general structure; ##STR7## wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl or lower alkoxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy; R 1 , R 2 , R 3 and R 4 may be the same or different; a is an integer between 1 and about 200; and wherein the compatible component remains compatible with the unsaturated polyester and monomer.
Claim 2
Dependent Claim
170 words
A four component resinous system for a sheet molding composition comprising: (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile thermoplastic polymers which cause phase separation and porosity during a curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester, and, (d) one or more compatible components containing one or more polyoxyethane substituents having a general structure; ##STR7## wherein R 1 , R 2 , R 3 and R 4 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl or lower alkoxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy; R 1 , R 2 , R 3 and R 4 may be the same or different; a is an integer between 1 and about 200; and wherein the compatible component remains compatible with the unsaturated polyester and monomer.
Claim 3
Dependent Claim
22 words
The compositions of claim 1, wherein the compatible component comprises one or more polyalkylene oxides having molecular weights of between about 200-5000.
Claim 4
Dependent Claim
21 words
The compositions of claim 2, wherein the compatible component comprises one or more polypropylene oxides having molecular weights between about 200-2000.
Claim 5
Dependent Claim
21 words
The compositions of claim 2, wherein the compatible component comprises one or more polyethylene oxides having molecular weight between about 200-5000.
Claim 6
Dependent Claim
77 words
A four component resinous system for a sheet molding composition comprising: (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile thermoplastic polymers which cause phase separation and porosity during a curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester, and, (d) one or more compatible components comprising one or more polyalkoxylated alkyl phenols.
Claim 7
Dependent Claim
77 words
A four component resinous system for a sheet molding composition comprising: (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile thermoplastic polymers which cause phase separation and porosity during a curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester, and, (d) one or more compatible components comprising one or more polyalkoxylated alkyl phenols.
Claim 8
Dependent Claim
104 words
The compositions of claim 5, wherein the polyalkoxylated alkyl phenol has a general structure: ##STR8## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl, or lower alkoxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 may be the same or different, and a is an integer between 1 and about 200.
Claim 9
Dependent Claim
78 words
A four component resinous system for a sheet molding composition comprising: (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile thermoplastic polymers which cause phase separation and porosity during a curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester, and, (d) one or more compatible components comprising one or more esters of polyfunctional acids.
Claim 10
Dependent Claim
78 words
A four component resinous system for a sheet molding composition comprising: (a) an unsaturated polyester comprising a polycondensation product of one or more dihydric alcohols and one or more ethylenically unsaturated polycarboxylic acids; (b) one or more low-profile thermoplastic polymers which cause phase separation and porosity during a curing reaction; (c) one or more olefinically unsaturated monomers which copolymerizes with the unsaturated polyester, and, (d) one or more compatible components comprising one or more esters of polyfunctional acids.
Claim 11
Dependent Claim
159 words
The compositions of claim 7, wherein the esters of polyfunctional acids have a general structure: ##STR9## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl, or lower alkoxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and R 10 may be the same or different, a and b are integers between 1 and about 200, a and b may be the same or different, and c is an integer between 1 and about 30 and may be the same or different than a or b.
Claim 12
Dependent Claim
177 words
The composition of claim 7, wherein the esters are triesters having a general structure: ##STR10## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl, or lower alkoxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy, and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 may be the same or different, a, b, and c are integers between 1 and about 200, and a, b and c may be the same or different.
Claim 13
Dependent Claim
152 words
The compositions of claim 7, wherein the esters are diesters having a general structure: ##STR11## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl, or lower alkloxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy, and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 may be the same or different, a and b are integers between 1 and about 200 and a, b and c may be the same or different.
Claim 14
Dependent Claim
117 words
The compositions of claim 7, wherein the esters are triesters having a general structure: ##STR12## wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are selected from the group consisting of hydrogen, cycloalkyl, lower alkyl, phenyl, phenyl substituted by halogen, lower alkyl, acyl, or lower alkoxy and phenyl lower alkyl wherein phenyl may be substituted by halogen, lower alkyl or lower alkoxy, and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 may be the same or different, and a is an integer between 1 and about 200.
Claim 15
Dependent Claim
22 words
The compositions of claim 5, wherein the unsaturated polyester comprises the polycondensation product of dihydric alcohols and an ethylenically unsaturated polycarboxylic acid.
Claim 16
Dependent Claim
21 words
The compositions of claim 12 wherein the unsaturated polyester comprises the polycondensation product of maleic and/or fumaric acids and propylene glycol.
Claim 17
Dependent Claim
20 words
The compositions of claim 12, wherein the unsaturated polyester comprises the polycondensation product of 1,3-butanediol and maleic and/or fumaric acids.
Claim 18
Dependent Claim
33 words
The compositions of claim 12, wherein the unsaturated polyester comprises the polycondensation product of ethylene and propylene glycols comprising approximately 50 mole percent or less of ethylene glycol, and maleic and/or fumaric acids.
Claim 19
Dependent Claim
25 words
The compositions of claim 12, wherein the unsaturated polyester comprises the polycondensation product of propylene glycol, maleic and/or fumaric acids and dicyclopentadiene reacted with water.
Claim 20
Dependent Claim
19 words
The compositions of claim 12, comprising the polycondensation product of propylene glycol, maleic and/or fumaric acids and isophthalic acid.
Claim 21
Dependent Claim
23 words
The compositions of claim 5, wherein the low-profile thermoplastic polymer comprises a reaction product of ethylene glycol and propylene glycol and adipic acid.
Claim 22
Dependent Claim
17 words
The compositions of claim 5, wherein the low-profile thermoplastic polymer comprises a polyvinyl acetate homopolymer or copolymer.
Claim 23
Dependent Claim
13 words
The compositions of claim 5, wherein the low-profile thermoplastic polymer comprises a polymethylmethacrylate.
Claim 24
Dependent Claim
10 words
The compositions of claim 5, wherein the monomer comprises styrene.
Claim 25
Dependent Claim
10 words
The compositions of claim 5, wherein the monomer comprises methyl-styrene.
Claim 26
Dependent Claim
11 words
The compositions of claim 5, wherein the monomer comprises vinyl toluene.
Claim 27
Dependent Claim
25 words
The compositions of claim 5, wherein the unsaturated polyester is present in an amount of approximately 25-45 percent, by weight, of the four component resin.
Claim 28
Dependent Claim
25 words
The compositions of claim 23, wherein the unsaturated polyester is present in an amount of approximately 28-35 percent, by weight, of the four component resin.
Claim 29
Dependent Claim
26 words
The compositions of claim 5, wherein the low-profile thermoplastic polymer is present in an amount of approximately 5-30 percent, by weight, of the four component resin.
Claim 30
Dependent Claim
26 words
The compositions of claim 26, wherein the low-profile thermoplastic polymer is present in an amount of approximately 7-15 percent, by weight, of the four component resin.
Claim 31
Dependent Claim
24 words
The compositions of claim 5, wherein the monomer is present in an amount of approximately 25-65 percent, by weight, of the four component resin.
Claim 32
Dependent Claim
24 words
The compositions of claim 28, wherein the monomer is present in an amount of approximately 35-50 percent, by weight, of the four component resin.
Claim 33
Dependent Claim
25 words
The composition of claim 5, wherein the compatible component is present in an amount of approximately 0.5-15 percent, by weight, of the four component resin.
Claim 34
Dependent Claim
25 words
The compositions of claim 30, wherein the compatible component is present in an amount of approximately 1-8 percent, by weight, of the four component resin.
Claim 35
Dependent Claim
22 words
The compositions of claim 7, wherein the unsaturated polyester comprises the polycondensation product of dihydric alcohols and an ethylenically unsaturated polycarboxylic acid.
Claim 36
Dependent Claim
83 words
The compositions of claim 32, wherein the unsaturated polyester comprises the polycondensation product of maleic and/or fumaric acids and propylene glycol; the polycondensation product of 1,3-butanediol and maleic and/or fumaric acids; the polycondensation product of ethylene and propylene glycols comprising approximately 50 mole percent or less of ethylene glycol, and maleic and/or fumaric acids; the polycondensation product of propylene glycol, maleic and/or fumaric acids and dicyclopentadiene reacted with water; or, the polycondensation product of propylene glycol, maleic and/or fumaric acids and isophthalic acid.
Claim 37
Dependent Claim
32 words
The compositions of claim 7, wherein the low-profile thermoplastic polymer comprises a reaction product of ethylene glycol and propylene glycol and adipic acid; a polyvinyl acetate homopolymer or copolymer; or, a polymethylmethacrylate.
Claim 38
Dependent Claim
14 words
The compositions of claim 7, wherein the monomer comprises styrene; methyl-styrene; or, vinyl toluene.
Claim 39
Dependent Claim
68 words
The compositions of claim 7, wherein the unsaturated polyester is present in an amount of approximately 25-45 percent, by weight; the low-profile thermoplastic polymer is present in an amount of approximately 5-30 percent, by weight; the monomer is present in an amount of approximately 25-65 percent, by weight; and the compatible component is present in an amount of approximately 0.5-15 percent, by weight, of the four component resin.
Claim 40
Dependent Claim
68 words
The compositions of claim 36, wherein the unsaturated polyester is present in an amount of approximately 28-35 percent, by weight; the low-profile thermoplastic polymer is present in an amount of approximately 7-15 percent, by weight; the monomer is present in an amount of approximately 35-50 percent, by weight; and the compatible component is present in an amount of approximately 1-8 percent, by weight, of the four component resin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |