Patent US4617286A successfully refreshed from Google Patents.
US4617286A
Expired / Lapsed
US
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Catalyst for polyurethane having delay property
Assignee: Tosoh Corp
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Filing: 1984-09-05
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Granted: 1986-10-14
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Expires: 2004-09-05
Abstract
Abstract The disclosed catalyst for polyurethane comprises an organic carboxylic acid salt of a tertiary amine compound and 1-methyl-4-(2-dimethylaminoethyl)piperazine. The tertiary amine compound is selected from the group of triethylenediamine, bis(2-dimethylaminoethyl)ether and N,N,N',N'',N''-pentamethyldiethylenetriamine and the organic carboxylic acid is selected from the organic carboxylic acids having 1-20 carbon atoms.
Inventors
- 👤 Shoji Arai
- 👤 Yutaka Tamano
- 👤 Yukihiro Tsutsumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1875; C08G18/20; C08G18/2009; C08G18/2027
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
A catalyst for the foaming of polyurethanes, comprising: the combination of an organic carboxylic acid salt of a teritiary amine compound and 1-methyl-4-(2-dimethylaminoethyl)piperazine in 5-70% by weight of an organic solvent, wherein the amount of said 1-methyl-4-(2-dimethylaminoethyl)piperazine compound ranges from 0.01 to 10.0 times the molar amount of the tertiary amine component of said organic carboxylic acid salt.
Claim 2
Dependent Claim
58 words
A catalyst for the foaming of polyurethanes, comprising: the combination of an organic carboxylic acid salt of a teritiary amine compound and 1-methyl-4-(2-dimethylaminoethyl)piperazine in 5-70% by weight of an organic solvent, wherein the amount of said 1-methyl-4-(2-dimethylaminoethyl)piperazine compound ranges from 0.01 to 10.0 times the molar amount of the tertiary amine component of said organic carboxylic acid salt.
Claim 3
Dependent Claim
24 words
The catalyst of claim 1, wherein said tertiary amine compound is selected from the group consisting of triethylenediamine, bis(2-dimethylaminoethyl)ether, dimethylcyclohexylamine, N,N,N',N'-tetramethylhexamethylenediamine, N,N,N',N",N"-pentamethyldiethylenetriamine and N,N,N',N",N"-pentamethyldipropylenetriamine.
Claim 4
Dependent Claim
15 words
The catalyst of claim 2, wherein said tertiary amine compound is triethylenediamine, bis(2-dimethylaminoethyl)ether or N,N,N',N",N"-pentamethyldiethylenetriamine.
Claim 5
Dependent Claim
24 words
The catalyst of claim 1, wherein said organic carboxylic acid component of said salt is an organic carboxylic acid having from 1-20 carbon atoms.
Claim 6
Dependent Claim
40 words
The catalyst of claim 4, wherein said organic carboxylic acid is formic acid, acetic acid, propionic acid, butyric acid, caproic acid, 2-ethylhexanoic acid, caprylic acid, cyanoacetic acid, pyruvic acid, benzoic acid, oxalic acid, malonic acid, succinic acid or maleic acid.
Claim 7
Dependent Claim
16 words
The catalyst of claim 5, wherein said organic carboxylic acid is formic acid or 2-ethylhexanoic acid.
Claim 8
Dependent Claim
20 words
The catalyst of claim 1, wherein siad organic solvent is ethyleneglycol, diethyleneglycol, propylene glycol, dipropyleneglycol, a butanediol, 1,6-hexanediol or glycerine.
Claim 9
Dependent Claim
16 words
The catalyst of claim 7, wherein said organic solvent is ethyleneglycol, diethyleneglycol, propyleneglycol, dipropyleneglycol or 1,4-butanediol.
Claim 10
Dependent Claim
39 words
The catalyst of claim 1, wherein, in the preparation of said organic carboxylic acid salt, the amount of said organic carboxylic acid reacted with said tertiary amine ranges from 0.05 to 1.0 equivalents per 1 equivalent of amino group.
Claim 11
Dependent Claim
19 words
The catalyst of claim: 9, wherein the amount of said organic carboxylic acid ranges from 0.1 to 0.8 equivalents.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |