US4590223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing polyurethanes using hydroxy-alkyl piperazine catalyst compositions
Assignee: Tosoh Corp
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Filing: 1985-06-24
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Granted: 1986-05-20
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Expires: 2005-06-24
Abstract
Abstract Disclosed is a catalytic composition comprising a substance having the general formula: <IMAGE> where R1 is an alkyl group having 1 to 3 C atoms and R2 is a group selected from -H, -CH3 and CH2CH3. The catalytic composition is odorless and excellent in the urethane forming reaction in production of polyurethane.
Inventors
- 👤 Shoji Arai
- 👤 Masazumi Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/2027
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
36 words
A catalytic composition for producing polyurethane, comprising a substance of the following formula: ##STR3## where R 1 is methyl and R 2 is a group selected from --H, --CH 3 and --CH 2 CH 3 .
Claim 2
Dependent Claim
36 words
A catalytic composition for producing polyurethane, comprising a substance of the following formula: ##STR3## where R 1 is methyl and R 2 is a group selected from --H, --CH 3 and --CH 2 CH 3 .
Claim 3
Dependent Claim
33 words
A catalytic composition according to claim 1, in which the substance has the following formula ##STR4## in which R 1 is a methyl group and R 2 is hydrogen or a methyl group.
Claim 4
Dependent Claim
14 words
A catalytic composition according to claim 1, in which the substance is N-methyl-N'-hydroxyethyl piperazine.
Claim 5
Dependent Claim
13 words
A catalytic composition according to claim 1, in which the substance is N-methyl-N'-(2-hydroxypropyl)piperazine.
Claim 6
Dependent Claim
32 words
A catalyst for producing polyurethane, having the following formula: ##STR5## where R 1 is methyl and R 2 is a group selected from --H, --CH 3 and --CH 2 CH 3 .
Claim 7
Dependent Claim
32 words
A catalyst for producing polyurethane, having the following formula: ##STR5## where R 1 is methyl and R 2 is a group selected from --H, --CH 3 and --CH 2 CH 3 .
Claim 8
Dependent Claim
25 words
A process of preparing a polyurethane comprising reacting a polyesterpolyol or a polyetherpolyol with a polyisocyanate in the presence of the catalyst of claim 5.
Claim 9
Dependent Claim
15 words
A process according to claim 6 wherein there is reacted a polyetherpolyol with a polyisocyanate.
Claim 10
Dependent Claim
25 words
A process of preparing a polyurethane comprising reacting a polyesterpolyol or a polyetherpolyol with a polyisocyanate in the presence of the catalyst of claim 2.
Claim 11
Dependent Claim
25 words
A process of preparing a polyurethane comprising reacting a polyesterpolyol or a polyetherpolyol with a polyisocyanate in the presence of the catalyst of claim 3.
Claim 12
Dependent Claim
25 words
A process of preparing a polyurethane comprising reacting a polyesterpolyol or a polyetherpolyol with a polyisocyanate in the presence of the catalyst of claim 4.
Claim 13
Dependent Claim
20 words
A process according to claim 6 wherein there is included a foaming agent and there is produced a foamed product.
Claim 14
Dependent Claim
12 words
A process according to claim 11 wherein the foaming agent is water.
Claim 15
Dependent Claim
13 words
A catalytic composition according to claim 1 including a triethylenediamine as a cocatalyst.
Claim 16
Dependent Claim
26 words
A process of preparing a polyurethane comprising reacting a polyesterpolyol or a polyetherpolyol with a polyisocyanate in the presence of the catalyst composition of claim 13.
Claim 17
Dependent Claim
46 words
A reaction mixture for producing polyurethane comprising (1) a substance of the following formula: ##STR6## where R 1 is methyl and R 2 is a group selected from --H, --CH 3 and --CH 2 CH 3 , (2) a polyesterpolyol or polyetherpolyol and (3) a polyisocyanate.
Claim 18
Dependent Claim
46 words
A reaction mixture for producing polyurethane comprising (1) a substance of the following formula: ##STR6## where R 1 is methyl and R 2 is a group selected from --H, --CH 3 and --CH 2 CH 3 , (2) a polyesterpolyol or polyetherpolyol and (3) a polyisocyanate.
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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |