US4067849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester prepare from a mixture of isophthalic acid, azelaic acid, trimethylpentanediol and bisphenol A
Assignee: Owens Corning
•
Filing: 1975-06-05
•
Granted: 1978-01-10
•
Expires: 1995-06-05
Abstract
Abstract A glass size composition comprising a polyester, the polyester comprising the reaction product of (1) a mixture of acids consisting essentially of isophthalic acid and azelaic acid and, (2) a mixture consisting essentially of trimethylpentanediol and bisphenol A is disclosed.
Inventors
- 👤 Robert C. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:14
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08G63/195; C08J2367/00; C08J2367/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/3162
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
36 words
A composition comprising a polyester, the polyester comprising the reaction product of: a. a mixture of acids consisting essentially of isophthalic acid and azelaic acid; and, b. a mixture consisting essentially of trimethylpentanediol and bisphenol A.
Claim 2
Dependent Claim
36 words
A composition comprising a polyester, the polyester comprising the reaction product of: a. a mixture of acids consisting essentially of isophthalic acid and azelaic acid; and, b. a mixture consisting essentially of trimethylpentanediol and bisphenol A.
Claim 3
Dependent Claim
31 words
The composition of claim 1 in which said isophthalic acid is employed in an amount within the range of from about 3 to about 6 mols per mol of azelaic aicd.
Claim 4
Dependent Claim
30 words
The composition of claim 1 in which said trimethylpentanediol is employed in an amount within the range of from about 9 to about 17 mols per mol of bisphenol A.
Claim 5
Dependent Claim
39 words
The composition of claim 1 in which said mixture of acids is employed in an amount within the range of from about 0.65 to about 0.95 mol per mol of the total of said trimethylpentanediol and said bisphenol A.
Claim 6
Dependent Claim
16 words
The composition of claim 4 in which said polyester has a molecular weight of about 3,000.
References Cited (Backward Citations)
US3635899A
Cited
US3697479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |