US4101470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethane catalysts
Assignee: Huntsman Corp
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Filing: 1976-11-11
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Granted: 1978-07-18
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Expires: 1996-11-11
Abstract
Abstract Covers compound of the formula: ##STR1## where R is lower alkyl, R 1 is selected from the group consisting of hydrogen, alkyl, aryl, substituted aryl, alkaryl, substituted alkaryl, aralkyl, and substituted aralkyl. Also covers a method of producing a polyurethane by utilizing said above compounds as catalysts in reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of said catalyst.
Inventors
- 👤 Edward E. McEntire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:40
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
A method for producing a polyurethane which comprises reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of a catalytic amount of a compound having the following structural formula: ##STR4## where R is lower alkyl and R 1 is a radical selected from the group consisting of hydrogen, alkyl, cycloalkyl, or an aromatic hydrocarbon radical; the R 1 radical can also bear an alkyl, cyano, nitro, or halo substituent.
Claim 2
Independent Claim
75 words
A method for producing a polyurethane which comprises reacting an organic polyisocyanate with an organic polyester polyol or polyether polyol in the presence of a catalytic amount of a compound having the following structural formula: ##STR4## where R is lower alkyl and R 1 is a radical selected from the group consisting of hydrogen, alkyl, cycloalkyl, or an aromatic hydrocarbon radical; the R 1 radical can also bear an alkyl, cyano, nitro, or halo substituent.
Claim 3
Dependent Claim
34 words
A method of claim 5 wherein said organic polyisocyanate has a functionality of from 2 to 4, and said organic polyester or polyether polyol has a hydroxyl number of from about 25 to 700.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein R in said structural formula is methyl.
Claim 5
Dependent Claim
10 words
The method of claim 3 wherein R 1 is hydrogen.
Claim 6
Dependent Claim
10 words
The method of claim 3 wherein R 1 is methyl.
Claim 7
Dependent Claim
100 words
The method of claim 2 wherein a flexible polyether polyurethane foam is provided which comprises reacting in the presence of a blowing agent said organic polyisocyanate with a polyether polyol formed by the addition of a polyhydric alcohol having a functionality of from 2 to 4 with an alkylene oxide of 2 to 4 carbon atoms in the presence of said catalyst, said organic polyisocyanate being employed in an amount sufficient to provide 0.4 to 1.5 mol equivalents of isocyanato groups per mol equivalent of hydroxyl groups, said polyether polyol having a molecular weight within the range of about 2000-7000.
Claim 8
Dependent Claim
101 words
The method of claim 2 wherein a rigid polyether polyurethane foam is provided by reacting in the presence of a blowing agent said organic polyisocyanate with a hydroxy terminated polyether in the presence of said catalyst, said polyisocyanate being employed in an amount sufficient to provide 0.4 to 1.5 mol equivalents of isocyanato groups per mol equivalent of a hydroxy group in the hydroxy terminated polyether, said polyether having from about 4 to about 7 hydroxy groups per molecule, a molecular weight within the range from 300 to about 1200 and a hydroxyl number within the range of 350 to 700.
Claim 9
Dependent Claim
103 words
The method of claim 2 wherein a flexible polyurethane foam is prepared which comprises reacting in the presence of a blowing agent toluene diisocyanate with a hydroxyl terminated condensation produce of a polycarboxylic acid and a polyhydric alcohol in the presence of said catalyst, said toluene diisocyanate being employed in an amount sufficient to provide 1.05 to 1.5 mole equivalents of isocyanato groups per mol equivalent of hydroxyl groups, said condensation product having a functionality of from about 2 to about 4, and a molecular weight from about 2,000 to about 4,000 and a hydroxyl number ranging from about 25 to about 60.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |