Patent US4276388A successfully refreshed from Google Patents.
US4276388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding resin composition
Assignee: Resonac Corp
•
Filing: 1979-06-21
•
Granted: 1981-06-30
•
Expires: 1999-06-21
Abstract
Abstract A molding resin composition comprising (a) 40 to 70 parts by weight of an unsaturated polyester, (b) 60 to 20 parts by weight of a dialkyl ester of alkenyl succinic acid, and (c) 0 to 30 parts by weight of a polymerizable monomer other than the component (b) can produce molded articles excellent in mechanical properties, e.g. toughness and coating properties.
Inventors
- 👤 Etsuji Iwami
- 👤 Takayuki Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:14
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0478; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/66; C08G63/668; C08G63/676; C09; C09D; C09D4/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A molding resin composition comprising: (a) 40 to 70 parts by weight of an unsaturated polyester of at least one α,β-ethylenically unsaturated dicarboxylic acid or a mixture of said dicarboxylic acid with at least one saturated dicarboxylic acid, with a polyhydric alcohol, (b) 60 to 20 parts by weight of a dialkyl ester of alkenyl succinic acid, and (c) 0 to 30 parts by weight of a ethylenically unsaturated monomer.
Claim 2
Dependent Claim
70 words
A molding resin composition comprising: (a) 40 to 70 parts by weight of an unsaturated polyester of at least one α,β-ethylenically unsaturated dicarboxylic acid or a mixture of said dicarboxylic acid with at least one saturated dicarboxylic acid, with a polyhydric alcohol, (b) 60 to 20 parts by weight of a dialkyl ester of alkenyl succinic acid, and (c) 0 to 30 parts by weight of a ethylenically unsaturated monomer.
Claim 3
Dependent Claim
33 words
A composition according to claim 1, wherein the dialkyl ester of alkenyl succinic acid is produced by reacting an alkenyl succinic acid or anhydride with an alcohol having 1 to 8 carbon atoms.
Claim 4
Dependent Claim
15 words
A composition according to claim 2, wherein the alcohol is methanol, ethanol, isopropanol or n-butanol.
Claim 5
Dependent Claim
24 words
A composition according to claim 2, wherein the alkenyl succinic acid or anhydride is diisobutenyl succinic acid or anhydride, triisobutenyl succinic acid or anhydride.
Claim 6
Dependent Claim
38 words
A composition according to claim 1, wherein the ethylenically unsaturated monomer is styrene, α-methylstyrene, chlorostyrene, vinyltoluene, divinyl benzene, diallyl phthalate, diallyl isophthalate, methyl methacrylate, methyl acrylate, ethyl methacrylate, ethyl acrylate, vinyl acetate, triallyl isocyanurate, or a mixture thereof.
Claim 7
Dependent Claim
23 words
A composition according to claim 1, wherein the dialkyl ester of alkenyl succinic acid or anhydride is dimethyl ester of diisobutenyl succinic anhydride.
Claim 8
Dependent Claim
22 words
A composition according to claim 1, wherein said unsaturated polyester is a reaction product of maleic anhydride, isophthalic acid and propylene glycol.
Claim 9
Dependent Claim
13 words
A composition according to claim 1, wherein said ethylenically unsaturated monomer is styrene.
Claim 10
Dependent Claim
37 words
A composition according to claim 8, comprising: (a) 60 parts by weight of the unsaturated polyester, (b) 30 parts by weight of an dialkyl ester of alkenyl succinic acid, and (c) 10 parts by weight of styrene.
Claim 11
Dependent Claim
27 words
A composition according to claims 1 or 9, additionally comprising one or more polymerization inhibitor, curing catalysts, thermoplastic resins, fillers, coloring agents, thickening agents and reinforcing materials.
References Cited (Backward Citations)
US2403791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |