Patent US4299950A successfully refreshed from Google Patents.
US4299950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated polyester resin composition
Assignee: Zeon Corp
•
Filing: 1980-07-22
•
Granted: 1981-11-10
•
Expires: 2000-07-22
Abstract
Abstract A novel unsaturated polyester resin composition comprising an unsaturated alkyd and a crosslinkable vinyl monomer, said unsaturated alkyd being a modified unsaturated alkyd obtained by reacting a polybasic acid with a polyhydric alcohol in the presence of a cyclopentadiene-type oil having a viscosity at 25° C. of 50 to 50,000.
Inventors
- 👤 Riso Iwata
- 👤 Atsuo Ishikawa
- 👤 Hisataka Komai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:49
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553; C08F; C08F299/00; C08F299/02; C08F299/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A cured product obtained from an unsaturated polyester resin composition comprising an unsaturated alkyd and a crosslinkable vinyl monomer, said unsaturated alkyd being a modified unsaturated alkyd obtained by reacting a polybasic acid with a saturated polyhydric alcohol in the presence of a cyclopentadiene-type oil having a viscosity at 25° C. of 50 to 50,000 centipoises the oil being present in an amount of 5 to 50% by weight.
Claim 2
Dependent Claim
69 words
A cured product obtained from an unsaturated polyester resin composition comprising an unsaturated alkyd and a crosslinkable vinyl monomer, said unsaturated alkyd being a modified unsaturated alkyd obtained by reacting a polybasic acid with a saturated polyhydric alcohol in the presence of a cyclopentadiene-type oil having a viscosity at 25° C. of 50 to 50,000 centipoises the oil being present in an amount of 5 to 50% by weight.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein said cyclopentadiene-type oil has a cyclopentadiene-type monomer content of at least 30% by weight.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein said cyclopentadiene-type oil is obtained by heat polymerization.
Claim 5
Dependent Claim
20 words
The composition of claim 1 wherein said cyclopentadiene-type oil has a viscosity at 25° C. of 100 to 30,000 centipoises.
Claim 6
Dependent Claim
20 words
The composition of claim 1 wherein said cyclopentadiene-type oil has a viscosity at 25° C. of 500 to 20,000 centipoises.
Claim 7
Dependent Claim
28 words
The composition of claim 2 wherein said cyclopentadiene-type monomer is seleced from the group consisting of cyclopentadiene, methyl cyclypentadiene, ethyl cyclopentadiene, the dimers, codimers thereof and mixtures thereof.
Claim 8
Dependent Claim
61 words
The composition of claim 6 wherein said cyclopentadiene-type oil comprises from 40 to 90% by weight of the cyclopentadiene-type monomer and a comonomer selected from the group consisting of ethylene, propylene, butene, pentene, styrene, alpha-methylstyrene, 1,3-butadiene, isoprene, 1,3-pentadiene, vinyl acetate, vinyl propionate, vinyl chloride, acrylic esters, methacrylic esters, acrylonitrile, acrolein, allyl alcohol, phenol, cresol, hydroxystyrene, a drying oil and semi-drying oil.
Claim 9
Dependent Claim
51 words
The composition of claim 1 wherein the cross-linkable vinyl monomer comprises from 20 to 50% by weight of the total composition and wherein the modified unsaturated alkyd is obtained by reacting the polybasic acid and saturated polyhydric alcohol in the presence of 5 to 50% by weight of the cyclopentadiene-type oil.
Claim 10
Dependent Claim
36 words
The composition of claim 5 wherein the cyclopentadiene-type oil is obtained by heat-polymerizing from 50 to 80% by weight of dicyclopentadiene with a monomer selected from the group consisting of 1,3-pentadiene, vinyl chloride and mixtures thereof.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |