US4065439A
Expired / Lapsed
US
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Copolyester and process for the production thereof
Assignee: Toyobo Co Ltd
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Filing: 1975-06-10
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Granted: 1977-12-27
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Expires: 1995-06-10
Abstract
Abstract A copolyester useful for adhesives, paints, surface treating agents, plasticizers, binders, or the like, which comprises the following five components: A. terephthalic acid, B. isophthalic acid, C. an aliphatic dicarboxylic acid of the formula: HOOC--(CH.sub.2).sub.n --COOH wherein n is an integer of 4 to 7, inclusive, D. ethylene glycol, and E. neopentyl glycol, The said copolyester containing the five components in the following molar ratio: 50/50 ≦ [(a)+(b)]/(c) ≦ 75/25 30/70 ≦ (a)/(b) ≦ 70/30 40/60 ≦ (d)/(e) ≦ 80/20 and a process for the production thereof.
Inventors
- 👤 Keiichi Uno
- 👤 Takahito Miyagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/181; C08G63/183; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
A copolyester derived from: a. terephthalic acid or an ester-forming derivative thereof, b. isophthalic acid or an ester-forming derivative thereof, c. an aliphatic dicarboxylic acid of the formula: HOOC -- (CH.sub.2).sub.n --COOH wherein n is an integer of 4 to 7, inclusive, or an ester-forming derivative thereof, d. ethylene glycol, and e. neopentyl glycol, wherein the molar ratios of the components in the copolyester are as follows: 50/50 ≦ [(a) + (b)]/(c) ≦ 75/25 30/70 ≦ (a)/(b) ≦ 70/30 40/60 ≦ (d)/(e) ≦ 80/20.
Claim 2
Dependent Claim
84 words
A copolyester derived from: a. terephthalic acid or an ester-forming derivative thereof, b. isophthalic acid or an ester-forming derivative thereof, c. an aliphatic dicarboxylic acid of the formula: HOOC -- (CH.sub.2).sub.n --COOH wherein n is an integer of 4 to 7, inclusive, or an ester-forming derivative thereof, d. ethylene glycol, and e. neopentyl glycol, wherein the molar ratios of the components in the copolyester are as follows: 50/50 ≦ [(a) + (b)]/(c) ≦ 75/25 30/70 ≦ (a)/(b) ≦ 70/30 40/60 ≦ (d)/(e) ≦ 80/20.
Claim 3
Dependent Claim
31 words
The copolyester according to claim 1, wherein the molar ratios of the components are 55/45 ≦ [(a) + (b)]/(c) ≦ 65/35 30/70 ≦ (a)/(b) ≦ 70/30 40/60 ≦ (d)/(e) ≦ 80/20.
Claim 4
Dependent Claim
34 words
The copolyester according to claim 1, wherein the aliphatic dicarboxylic acid (c) is at least one of the members selected from the group consisting of adipic acid, pimelic acid, suberic acid and azelaic acid.
Claim 5
Dependent Claim
15 words
The copolyester according to claim 3, wherein the aliphatic dicarboxylic acid (c) is adipic acid.
Claim 6
Dependent Claim
40 words
A copolyester derived from a. terephthalic acid, b. isophthalic acid, c. adipic acid, d. ethylene glycol, and e. neopentyl glycol, wherein the molar ratio of the components (a)/(b)/(c) is 25-35/25-35/35-45 and the molar ratio of the components (d)/(e) is 50-60/40-50.
Claim 7
Dependent Claim
40 words
A copolyester derived from a. terephthalic acid, b. isophthalic acid, c. adipic acid, d. ethylene glycol, and e. neopentyl glycol, wherein the molar ratio of the components (a)/(b)/(c) is 25-35/25-35/35-45 and the molar ratio of the components (d)/(e) is 50-60/40-50.
Claim 8
Dependent Claim
40 words
A copolyester derived from: a. dimethyl terephthalate, b. dimethyl isophthalate, c. adipic acid, d. ethylene glycol, and e. neopentyl glycol, wherein the molar ratio of the components (a)/(b)/(c) is 25-35/25-35/35-45 and the molar ratio of the components (d)/(e) is 50-60/40-50.
Claim 9
Dependent Claim
40 words
A copolyester derived from: a. dimethyl terephthalate, b. dimethyl isophthalate, c. adipic acid, d. ethylene glycol, and e. neopentyl glycol, wherein the molar ratio of the components (a)/(b)/(c) is 25-35/25-35/35-45 and the molar ratio of the components (d)/(e) is 50-60/40-50.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |