Patent US3068254A successfully refreshed from Google Patents.
US3068254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low viscosity polymerized fatty acids polyester resins and method of making same
Assignee: PPG Industries Inc
•
Filing: 1958-02-20
•
Granted: 1962-12-11
•
Expires: 1978-02-20
Abstract
No abstract record available.
Inventors
- 👤 Bras Louis R Le
- 👤 Robert E Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/423; C08G18/4233; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08G63/46; C08G2110/00; C08G2110/0008; C08G2110/0083; Y; Y10; Y10S; Y10S521/00; Y10S521/918; Y10S524/00; Y10S524/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AS A NEW MATERIAL, A POLYESTER OF A MIXTURE CONSISTING ESSENTIALLY OF: (A) TRIETHYLENE GLYCOL, (B) A TRIHYDRIC ALCOHOL SELECTED FROM THE CLASS CONSISTING OF TRIMETHYLOLETHANE AND TRIMETHYLOLPROPANE, AND (C) A MIXTURE OF DIMER ACID AND TRIMER ACID CONTAINING, RESPECTIVELY, 36 AND 54 CARBON ATOMS, AND BEING OBTAINED BY POLYMERIZATION OF FATTY ACID CONTAINING A PLURALITY OF DOUBLE BONDS AND BEING OF GLYCERIDE DRYING OILS, THE MIXTURE OF DIMER ACID AND TRIMER ACID CONTAINING ABOUT 5 TO ABOUT 35 PERCENT OF TRIMER ACID, THE REST THEREOF BEING ESSENTIALLY DIMER ACID, THE MIXTURE OF DIMER ACID AND TRIMER ACID CONTAINING NOT MORE THAN ABOUT 4 PERCENT OF MONOMERIC FATTY ACIDS, THE RELATIVE PROPORTIONS OF THE SEVERAL COMPONENTS IN THE POLYESTER BEING APPROXIMATELY WITHIN THE FOLLOWING RANGES:
Claim 2
Dependent Claim
125 words
AS A NEW MATERIAL, A POLYESTER OF A MIXTURE CONSISTING ESSENTIALLY OF: (A) TRIETHYLENE GLYCOL, (B) A TRIHYDRIC ALCOHOL SELECTED FROM THE CLASS CONSISTING OF TRIMETHYLOLETHANE AND TRIMETHYLOLPROPANE, AND (C) A MIXTURE OF DIMER ACID AND TRIMER ACID CONTAINING, RESPECTIVELY, 36 AND 54 CARBON ATOMS, AND BEING OBTAINED BY POLYMERIZATION OF FATTY ACID CONTAINING A PLURALITY OF DOUBLE BONDS AND BEING OF GLYCERIDE DRYING OILS, THE MIXTURE OF DIMER ACID AND TRIMER ACID CONTAINING ABOUT 5 TO ABOUT 35 PERCENT OF TRIMER ACID, THE REST THEREOF BEING ESSENTIALLY DIMER ACID, THE MIXTURE OF DIMER ACID AND TRIMER ACID CONTAINING NOT MORE THAN ABOUT 4 PERCENT OF MONOMERIC FATTY ACIDS, THE RELATIVE PROPORTIONS OF THE SEVERAL COMPONENTS IN THE POLYESTER BEING APPROXIMATELY WITHIN THE FOLLOWING RANGES:
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |