Patent US4026840A successfully refreshed from Google Patents.
US4026840A
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US
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Hydroxyalkyl tertiary amine catalysts for isocyanate reactions
Assignee: Air Products and Chemicals Inc
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Filing: 1975-06-09
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Granted: 1977-05-31
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Expires: 1995-06-09
Abstract
Abstract Isocyanate reactions, such as their condensation with polyols to form polyurethanes and their polymerization to polyisocyanurates, are promoted by certain hydroxyalkyl tertiary amine catalysts corresponding to the formula <IMAGE> wherein Y = CH3 or Z Z = -CH2.CH2OH n = 1 or 2
Inventors
- 👤 Ibrahim S. Bechara
- 👤 Felix P. Carroll
- 👤 Rocco L. Mascioli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:36
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/003; C08G18/02; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1808; C08G18/1825; C08G18/28; C08G18/2805; C08G18/285; C08G18/2875; C08G2115/00; Y; Y10; Y10S; Y10S521/00; Y10S521/902
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
56 words
The method of promoting addition and polymerization reactions of organic isocyanates by basic catalysis which comprises: effecting such reactions in the presence of a catalytic amount of a hydroxyalkyl tertiary amine compound of the formula ##STR15## wherein Y is CH 3 or Z, Z is --C 2 H 4 OH, and n is 1 or 2.
Claim 2
Independent Claim
56 words
The method of promoting addition and polymerization reactions of organic isocyanates by basic catalysis which comprises: effecting such reactions in the presence of a catalytic amount of a hydroxyalkyl tertiary amine compound of the formula ##STR15## wherein Y is CH 3 or Z, Z is --C 2 H 4 OH, and n is 1 or 2.
Claim 3
Dependent Claim
17 words
The method as defined in claim 1 wherein said tertiary amine compound corresponds to the formula ##STR16##
Claim 4
Dependent Claim
16 words
The method as defined in claim 1 wherein Y of the formula is CH 3 .
Claim 5
Independent Claim
53 words
The method of forming polyisocyanurates by polymerization of organic isocyanate compounds which comprises promoting such polymerization by the presence of a catalytic quantity of a hydroxyalkyl tertiary amine compound of the formula ##STR17## wherein Y is CH 3 or Z, Z is --C 2 H 4 OH, and n is 1 or 2.
Claim 6
Independent Claim
53 words
The method of forming polyisocyanurates by polymerization of organic isocyanate compounds which comprises promoting such polymerization by the presence of a catalytic quantity of a hydroxyalkyl tertiary amine compound of the formula ##STR17## wherein Y is CH 3 or Z, Z is --C 2 H 4 OH, and n is 1 or 2.
Claim 7
Dependent Claim
13 words
The method as defined in claim 4 wherein Y is CH 3 .
Claim 8
Dependent Claim
20 words
The method as defined in claim 4 wherein said hydroxyalkyl tertiary amine compound is one corresponding to the formula ##STR18##
Claim 9
Dependent Claim
40 words
In the process for the production of polyurethane by the addition of a polyol compound containing reactive hydroxyl groups with an organic polyisocyanate, the method which comprises promoting the addition reaction by the presence of a catalytic quantity N,N,N' trimethylaminoethylethanolamine.
Claim 10
Dependent Claim
40 words
In the process for the production of polyurethane by the addition of a polyol compound containing reactive hydroxyl groups with an organic polyisocyanate, the method which comprises promoting the addition reaction by the presence of a catalytic quantity N,N,N' trimethylaminoethylethanolamine.
Claim 11
Dependent Claim
15 words
The method as defined in claim 7 wherein said polyol compound is a polyether polyol.
Claim 12
Dependent Claim
15 words
The method as defined in claim 7 wherein said polyol compound is a polyester polyol.
Claim 13
Dependent Claim
31 words
The method as defined in claim 7 wherein said addition is carried out in the presence of water to form a blown foam, resulting from carbon dioxide released from the polyisocyanate.
Claim 14
Dependent Claim
20 words
The method as defined in claim 7 wherein said addition is effected in the presence of a fluorocarbon blowing agent.
References Cited (Backward Citations)
US3050475A
Cited
US2995530A
Cited
US3520835A
Cited
US3824239A
Cited
US3824240A
Cited
US3928256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |