US3864427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding Compositions
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1972-10-26
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Granted: 1975-02-04
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Expires: 1992-10-26
Abstract
Abstract Molding composition containing (1) a crystalline styrene polymer or a copolymer of styrene and a low molecular weight compound containing two non-conjugated ethylenically unsaturated double bonds per molecule, (2) an unsaturated polyester and (3) a monomer which contains one vinyl group and is polymerizable with the unsaturated polyester.
Inventors
- 👤 Ryuichi Nakane
- 👤 Hisatsugu Minamida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:08
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
135 words
A MOLDING COMPOSITION COMPRISNG (1) AN UNSATURATED POLYESTER PRODUCED BY REACTING AN A B-UNSATURATED ALIPHATIC DICARBOXYLIC ACID, OR A MIXTURE OF THE DICARBOXYLIC ACID AND AT LEAST ONE OF A SATURATED ALIPHATIC ECARBOXYLIC ACID AND AN AROMATIC DICARBOXYLIC ACID, WITH POLYOL, (2) A MONOMER POLYMERIZABLE WITH THE UNSATURATED POLYESTER AND HAVING ONE VONYL GROUP PER MOLECULE, AND (3) A CRYSTALLINE STYRENE POLYMER IN WHICH AT LEAST ABOUT 95 WEIGHT PARTS OF THE POLYMER IS INSOLUBLE IN METHYL ETHYL KETONE AT 40*C, AND THE INSOLUBLE PORTIONS OF THE POLYMERE MELT OR SOFTEN AT ABOUT 210* TO ABOUT 230*C, OR ACOPOLYMER OF (A) STYRENE OR A MIXTURE OF SYTRENE AND A MONOMER COPOLYMERIZABLE THEREWITH AND HAVNG ONE VINYL GROUP PER MOLECULAR AND (B) A LOW MOLECULAR WEIGHT COMPOUND CONTAINING TWO NON-CONJUGATED ETHYLENICALLY UNSATURATED DOUBLE BONDS PER MOLECULE.
Claim 2
Dependent Claim
135 words
A MOLDING COMPOSITION COMPRISNG (1) AN UNSATURATED POLYESTER PRODUCED BY REACTING AN A B-UNSATURATED ALIPHATIC DICARBOXYLIC ACID, OR A MIXTURE OF THE DICARBOXYLIC ACID AND AT LEAST ONE OF A SATURATED ALIPHATIC ECARBOXYLIC ACID AND AN AROMATIC DICARBOXYLIC ACID, WITH POLYOL, (2) A MONOMER POLYMERIZABLE WITH THE UNSATURATED POLYESTER AND HAVING ONE VONYL GROUP PER MOLECULE, AND (3) A CRYSTALLINE STYRENE POLYMER IN WHICH AT LEAST ABOUT 95 WEIGHT PARTS OF THE POLYMER IS INSOLUBLE IN METHYL ETHYL KETONE AT 40*C, AND THE INSOLUBLE PORTIONS OF THE POLYMERE MELT OR SOFTEN AT ABOUT 210* TO ABOUT 230*C, OR ACOPOLYMER OF (A) STYRENE OR A MIXTURE OF SYTRENE AND A MONOMER COPOLYMERIZABLE THEREWITH AND HAVNG ONE VINYL GROUP PER MOLECULAR AND (B) A LOW MOLECULAR WEIGHT COMPOUND CONTAINING TWO NON-CONJUGATED ETHYLENICALLY UNSATURATED DOUBLE BONDS PER MOLECULE.
Claim 3
Dependent Claim
111 words
A molding composition comprising (1) an unsaturated polyester produced by reacting an Alpha , Beta -unsaturated aliphatic dicarboxylic acid, or a mixture of the dicarboxylIc acid and at least one of a saturated aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, with a polyol, (2) a monomer polymerizable with the unsaturated polyester and having one vinyl group per molecule, (3) a crystalline styrene polymer in which at least about 95 weight parts of the polymer is insoluble in methyl ethyl ketone at 40*C, and the insoluble portions of the polymer melt or soften at about 210* to about 230*C, (4) a reinforcing material, (5) a thickener and (6) a curing catalyst.
Claim 4
Dependent Claim
111 words
A molding composition comprising (1) an unsaturated polyester produced by reacting an Alpha , Beta -unsaturated aliphatic dicarboxylic acid, or a mixture of the dicarboxylIc acid and at least one of a saturated aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, with a polyol, (2) a monomer polymerizable with the unsaturated polyester and having one vinyl group per molecule, (3) a crystalline styrene polymer in which at least about 95 weight parts of the polymer is insoluble in methyl ethyl ketone at 40*C, and the insoluble portions of the polymer melt or soften at about 210* to about 230*C, (4) a reinforcing material, (5) a thickener and (6) a curing catalyst.
Claim 5
Dependent Claim
110 words
A molding composition comprising (1) an unsaturated polyester produced by reacting an Alpha , Beta -unsaturated alphatic dicarboxylic acid, or a mixture of the dicarboxylic acid and at least one of a saturated aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, wtih a polyol, (2) a monomer polymerizable with the unsaturated polyester and having one vinyl group per molecule, (3) a copolymer of (a) styrene or a mixture of styrene and a monomer copolymerizable therewith and having one vinyl group per molecule and (b) a low molecular weight compound containing two non-conjugated ethylenically unsaturated double bonds per molecule, (4) a reinforcing material, (5) a thickener and (6) a curing catalyst.
Claim 6
Dependent Claim
110 words
A molding composition comprising (1) an unsaturated polyester produced by reacting an Alpha , Beta -unsaturated alphatic dicarboxylic acid, or a mixture of the dicarboxylic acid and at least one of a saturated aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, wtih a polyol, (2) a monomer polymerizable with the unsaturated polyester and having one vinyl group per molecule, (3) a copolymer of (a) styrene or a mixture of styrene and a monomer copolymerizable therewith and having one vinyl group per molecule and (b) a low molecular weight compound containing two non-conjugated ethylenically unsaturated double bonds per molecule, (4) a reinforcing material, (5) a thickener and (6) a curing catalyst.
Claim 7
Dependent Claim
24 words
A molding composition claimed in claim 2, wherein the weight ratio of the crystalline styrene polymer/the unsaturated polyester is about 1/100 to about 30/100.
Claim 8
Dependent Claim
24 words
A molding composition claimed in claim 2, wherein the weight ratio of the crystalline styrene polymer/the unsaturated polyester is about 3/100 to about 30/100.
Claim 9
Dependent Claim
24 words
A molding composition claimed in claim 2, wherein the weight ratio of the crystalline styrene polymer/the unsaturated polyester is about 3/100 to about 15/100.
Claim 10
Dependent Claim
20 words
A molding composition claimed in claim 3, wherein the low molecular weight compound is a compound represented by the formula;
Claim 11
Dependent Claim
25 words
A molding composition claimed in claim 7, wherein the trivalent low molecular weight hydrocarbon radical is a hydrocarbon radical having 3 to 6 carbon atoms.
Claim 12
Dependent Claim
22 words
A molding composition claimed in claim 8, wherein the hydrocarbon radical having 3 to 6 carbon atoms is a hydrocarbon radical of
Claim 13
Dependent Claim
42 words
A molding composition claimed in claim 7, wherein the copolymer of styrene and the low molecular weight compound is prepared by copolymerizing styrene with about 0.2 to about 30% of the low molecular weight compound based on the weight of the styrene.
Claim 14
Dependent Claim
42 words
A molding composition claimed in claim 7, wherein the copolymer of styrene and the low molecular weight compound is prepared by copolymereizing styrene with about 0.5 to about 10% of the low molecular weight compound based on the weight of the styrene.
Claim 15
Dependent Claim
34 words
A molding composition claimed in claim 3, wherein the low molecular weight compound is divinyl member selected from the group consisting of divinyl benzene, divinyl toluene, ethylene glycol diacrylate, ethylene glycol dimethacrylate, diallyl phthalate.
Claim 16
Dependent Claim
16 words
A molding composition claimed in claim 12, wherein the low molecular weight compound is divnyl benzene.
Claim 17
Dependent Claim
30 words
A molding composition claimed in claim 3, wherein the mixture of styrene and a monomer copolymerizable therewith and having one vinyl group per molecule is used in preparing the copolymer.
Claim 18
Dependent Claim
31 words
A molding composition claimed in claim 14, wherein the copolymerizable monomer is a member selected from the group consisting of acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate and mixtures thereof.
Claim 19
Dependent Claim
22 words
A molding composition claimed in claim 11, wherein the weight ratio of the copolymer/the unsaturated polyester is about 3/100 to about 20/100.
Claim 20
Dependent Claim
22 words
A molding composition claimed in claim 9, wherein the weight ratio of the copolymer/the unsaturated polyester is about 5/100 to about 10/100.
Claim 21
Dependent Claim
13 words
Sheet molding compound prepared by preforming the molding composition claimed in claim 6.
Claim 22
Dependent Claim
13 words
Bulk molding compound prepared by preforming the molding composition claimed in claim 6.
Claim 23
Dependent Claim
13 words
Sheet molding compound prepared by preforming the molding composition claimed in claim 17.
Claim 24
Dependent Claim
13 words
Bulk molding compound prepared by preforming the molding composition claimed in claim 17.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |