Patent US6177359B1 successfully refreshed from Google Patents.
US4330643A
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US
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Process for production of acryloyloxy- or methacryloyloxy-terminated polyesters
Assignee: Toagosei Co Ltd
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Filing: 1981-02-23
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Granted: 1982-05-18
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Expires: 2001-02-23
Abstract
Abstract A process for production of an acryloyloxy- or methacryloyloxy-terminated polyester is described, which comprises reacting a specific hydroxy-terminated polyester with acrylic acid or methacrylic acid, wherein the hydroxy-terminated polyester comprises (a) a dicarboxylic acid unit comprising about 10 to about 80 mol % of a terephthalic acid unit and about 90 to about 20 mol % of another dicarboxylic acid unit and (b) a dihydric alcohol unit containing about 30 mol % or more of a dihydric alcohol unit containing 3 or more carbon atoms and having a number average molecular weight of about 400 to about 5,000.
Inventors
- 👤 Takahisa Ogasawara
- 👤 Kiyokazu Mizutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:12
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/91; C08G63/914; C08G63/918; C08G63/02; C08G63/12; C08G63/46; C08G63/47
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A process for producing an acryloyloxy- or methacryloyloxy-terminated polyester which comprises reacting a hydroxy-terminated polyester with acrylic acid or methacrylic acid, said hydroxy-terminated polyester comprising (a) a dicarboxylic acid unit comprising about 10 to about 80 mol% of a terephthalic acid unit and about 90 to about 20 mol% of another dicarboxylic acid unit and (b) a dihydric alcohol unit containing about 30 mol% or more of a dihydric alcohol unit containing 3 or more carbon atoms, and having a number average molecular weight of about 400 to about 5,000.
Claim 2
Dependent Claim
90 words
A process for producing an acryloyloxy- or methacryloyloxy-terminated polyester which comprises reacting a hydroxy-terminated polyester with acrylic acid or methacrylic acid, said hydroxy-terminated polyester comprising (a) a dicarboxylic acid unit comprising about 10 to about 80 mol% of a terephthalic acid unit and about 90 to about 20 mol% of another dicarboxylic acid unit and (b) a dihydric alcohol unit containing about 30 mol% or more of a dihydric alcohol unit containing 3 or more carbon atoms, and having a number average molecular weight of about 400 to about 5,000.
Claim 3
Dependent Claim
57 words
The process as in claim 1, wherein the dicarboxylic acid unit comprises about 10 to about 80 mol% of a terephthalic acid unit, about 10 to about 80 mol% of an isophthalic acid unit and/or a saturated dicarboxylic acid unit containing 4 or more carbon atoms, and 0 to about 50 mol% of another dicarboxylic acid unit.
Claim 4
Dependent Claim
84 words
The process as in claim 2, wherein the dicarboxylic acid unit contains both the isophthalic acid unit and the saturated dicarboxylic acid unit containing 4 or more carbon atoms, the molar ratio of the isophthalic acid unit to the terephthalic acid unit is about 0.3:1 to about 3:1, and the molar ratio is the saturated dicarboxylic acid unit containing 4 or more carbon atoms to the total amount of the terephthalic acid unit and the isophthalic acid unit is about 1/9:1 to about 1:1.
Claim 5
Dependent Claim
79 words
The process as in claim 1, wherein said dihydric alcohol unit containing 3 or more carbon atoms is a unit derived from 1,3-propylene glycol, 1,2-propylene glycol, 1,4-butanediol, 1,3-butanediol, or 2,3-butanediol, 1,6-hexanediol, neopentyl glycol, diethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, ditetramethylene glycol, polytetramethylene glycol, polyoxyethylenated bisphenol A, polyoxypropylenated bisphenol A, 1,4-dihydroxy-2-ethylbutane, 1,8-dihydroxyoctane, 2,10-dihydroxydecane, 1,4-dihydroxycyclohexane, 1,4-dimethylolcyclohexane, 2,2-diethyl-propanediol-1,3, 2,2-dimethyl-propanediol-1,3, 3-methyl-pentanediol-1,4, 2,2-diethyl-butanediol-1,3, 4,5-dihydroxynonane, pentamethylene glycol, heptamethylene glycol, nonamethylene glycol, decamethylene glycol, 2-ethylhexanediol-1,3, triethylene glycol, tetraethylene glycol, tripropylene glycol or tetrapropylene glycol.
Claim 6
Dependent Claim
50 words
The process as in claim 2, wherein said saturated dicarboxylic acid unit containing 4 or more carbon atoms is an acid unit derived from succinic acid, glutaric acid, adipic acid, sebacic acid, decanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid, an acid anhydride thereof or a lower alkyl ester thereof.
Claim 7
Dependent Claim
26 words
The process as in claim 2, wherein said another dicarboxylic acid unit is a dicarboxylic acid unit derived from maleic acid, fumaric acid or phthalic acid.
References Cited (Backward Citations)
US3455802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-17 | 1985-11-16 | 1986-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-17 | 1989-11-16 | 1990-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-17 | 1993-11-16 | 1994-05-18 | $7700.00 | Window Closed / Lapsed |