Patent US3076171A successfully refreshed from Google Patents.
Patent US4024109A successfully refreshed from Google Patents.
US4024109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing cured epoxide polymers
Assignee: Wintershall Dea International AG
•
Filing: 1975-11-17
•
Granted: 1977-05-17
•
Expires: 1995-11-17
Abstract
Abstract This invention comprises curing a polyepoxide composition in the presence of, as curing agent, 0.03-1 mole per 1 epoxide equivalent of 1,3,6,8-tetra azo-tricyclo-[4,4,1 1 ,6.1 3 ,8 ] dodecane thereby forming a cured compound and recovering said cured compound.
Inventors
- 👤 Martin Cherubim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:33
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
The process which consists essentially of curing a composition consisting essentially of an epoxide compound containing more than one 1,2-epoxide group with 0.03-1 mole per 1 epoxide equivalent of 1,3,6,8-tetraaza-tricyclo-[4,4,1 l ,6.1 3 ,8 ] -dodecane thereby forming a cured compound; and recovering said cured compound.
Claim 2
Dependent Claim
46 words
The process which consists essentially of curing a composition consisting essentially of an epoxide compound containing more than one 1,2-epoxide group with 0.03-1 mole per 1 epoxide equivalent of 1,3,6,8-tetraaza-tricyclo-[4,4,1 l ,6.1 3 ,8 ] -dodecane thereby forming a cured compound; and recovering said cured compound.
Claim 3
Dependent Claim
51 words
The process which consists essentially of curing a composition essentially of an epoxide compound containing more than one 1,2-epoxide group, and based upon 4,4-dioxydiphenyl-propane-diglycidyl ether, with 0.03-mole, per 1 epoxide equivalent of said compound, of 1,3,6,8-tetraaza-tricyclo-[4,4,1 1 ,6.1 3 ,8 ]-dodecane thereby forming a cured compound; and recovering said cured compound.
Claim 4
Dependent Claim
51 words
The process which consists essentially of curing a composition essentially of an epoxide compound containing more than one 1,2-epoxide group, and based upon 4,4-dioxydiphenyl-propane-diglycidyl ether, with 0.03-mole, per 1 epoxide equivalent of said compound, of 1,3,6,8-tetraaza-tricyclo-[4,4,1 1 ,6.1 3 ,8 ]-dodecane thereby forming a cured compound; and recovering said cured compound.
Claim 5
Dependent Claim
52 words
A composition of matter characterized by a pendulum hardness of about 150-200 seconds (as measured by hardness test DIN Standard Test Number 53,157) which consists essentially of an epoxide compound containing more than one 1,2-epoxide group cured with 0.03-1 mole per 1 epoxide equivalent, of a 1,3,6,8-tetraaza-tricyclo-[4,4,1 1 ,6.1 3 ,8 ]-dodecane.
Claim 6
Dependent Claim
52 words
A composition of matter characterized by a pendulum hardness of about 150-200 seconds (as measured by hardness test DIN Standard Test Number 53,157) which consists essentially of an epoxide compound containing more than one 1,2-epoxide group cured with 0.03-1 mole per 1 epoxide equivalent, of a 1,3,6,8-tetraaza-tricyclo-[4,4,1 1 ,6.1 3 ,8 ]-dodecane.
Claim 7
Dependent Claim
17 words
The process as claimed in claim 1 wherein said process is carried out at 0° C-250° C.
Claim 8
Dependent Claim
16 words
A novel composition of matter as claimed in claim 3 wherein said epoxide is 4,4-dioxydiphenyl-propane-diglycidyl ether.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |