Patent US2981906A successfully refreshed from Google Patents.
Patent US4045474A successfully refreshed from Google Patents.
US4045474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low viscosity poly(epoxide-caprolactone) polyols
Assignee: Union Carbide Corp
•
Filing: 1975-10-07
•
Granted: 1977-08-30
•
Expires: 1995-10-07
Abstract
Abstract High functionality polyol compositions that have a low viscosity of less than 5,000 cks. at 130 DEG F. and an equivalent weight of at least 150 are useful for the formation of high performance coatings. These are produced by reacting a mixture of at least two polycaprolactone polyols having a hydroxyl number from about 180 to about 600 and a diepoxide.
Inventors
- 👤 Robert Arthur Taller
- 👤 Decker Kuykendall Elder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:33
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4266; C08G18/4269; C08G18/4277; C08G18/64; C08G18/6407; C08L; C08L63/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
An adduct of a polycaprolactone polyol and a cycloaliphatic diepoxide comprising the reaction product of (a) at least two polycaprolactone polyols differing in average hydroxyl number by an amount from 250 to 400 and having average hydroxyl numbers from about 180 to about 600 and (b) a cycloaliphatic diepoxide, said adduct having a viscosity of less than 5,000 cks. at 130° F. and an equivalent weight of at least 150.
Claim 2
Dependent Claim
70 words
An adduct of a polycaprolactone polyol and a cycloaliphatic diepoxide comprising the reaction product of (a) at least two polycaprolactone polyols differing in average hydroxyl number by an amount from 250 to 400 and having average hydroxyl numbers from about 180 to about 600 and (b) a cycloaliphatic diepoxide, said adduct having a viscosity of less than 5,000 cks. at 130° F. and an equivalent weight of at least 150.
Claim 3
Dependent Claim
22 words
An adduct as claimed in claim 1, wherein the mole ratio of polycaprolactone polyols to cycloaliphatic diepoxide is from 2.5:1 to 4:1.
Claim 4
Dependent Claim
23 words
An adduct as claimed in claim 1 wherein the mole ratio of the two polycaprolactone polyols to the cycloaliphatic diepoxide is 2:2:1, respectively.
Claim 5
Dependent Claim
23 words
An adduct as claimed in claim 1 wherein the mole ratio of the two polycaprolactone polyols to the cycloaliphatic diepoxide is 1.5:1:1, respectively.
Claim 6
Dependent Claim
23 words
An adduct as claimed in claim 1 wherein the difference in average hydroxyl numbers between said polycaprolactone polyols is from 250 to 350.
Claim 7
Dependent Claim
49 words
An adduct as claimed in claim 1 wherein said cycloaliphatic diepoxide has the structure: ##STR4## wherein R is hydrogen or alkyl of 1 to 4 carbon atoms; R° is a valence bond or a hydrocarbon radical having from 1 to 5 carbon atoms: and a is zero or one.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |