US4048107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam preparation using amio acetal catalyst
Assignee: Olin Corp
•
Filing: 1976-01-12
•
Granted: 1977-09-13
•
Expires: 1996-01-12
Abstract
Abstract Selected amines are used as catalysts in the preparation of polyurethane foam.
Inventors
- 👤 John S. Babiec, Jr.
- 👤 Steven T. Nakos
- 👤 Stephen L. Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/2018; C08G18/1833
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
41 words
A process for preparing a polyurethane foam from a reaction mixture which comprises an organic polyisocyanate, a polyol, a foaming agent and a catalytic proportion of an amino acetal catalyst selected from the group consisting of: 1,1-bis(2-dimethylaminoethoxy)ethane, bis(2-dimethylaminoethoxy)methane, 1,1-bis(2-dimethylaminoethoxy)propane, and 1,1,2,2-tetrakis(2-dimethylaminoethoxy)ethane.
Claim 2
Dependent Claim
41 words
A process for preparing a polyurethane foam from a reaction mixture which comprises an organic polyisocyanate, a polyol, a foaming agent and a catalytic proportion of an amino acetal catalyst selected from the group consisting of: 1,1-bis(2-dimethylaminoethoxy)ethane, bis(2-dimethylaminoethoxy)methane, 1,1-bis(2-dimethylaminoethoxy)propane, and 1,1,2,2-tetrakis(2-dimethylaminoethoxy)ethane.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said amino acetal is bis(2-dimethylaminoethoxy) methane.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein said foam is flexible and said foaming agent comprises water.
Claim 5
Dependent Claim
17 words
The process of claim 3 wherein said reaction mixture also comprises an organo-tin compound as a co-catalyst.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein said polyol is a polyether polyol.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein said foam is flexible and said foaming agent is water.
Claim 8
Dependent Claim
21 words
The process of claim 6 wherein said polyether polyol is an oxyalkylated polyhydric alcohol or a mixture of oxyalkylated polyhydric alcohols.
Claim 9
Dependent Claim
17 words
The process of claim 7 wherein said polyether polyol has a molecular weight of about 2,500 -6,000.
Claim 10
Dependent Claim
18 words
The process of claim 8 wherein said organic polyisocyanate is toluene diisocyanate, polymethylene polyphenylisocyanate or a mixture thereof.
Claim 11
Dependent Claim
12 words
The process of claim 9 wherein said organic polyisocyanate is toluene diisocyanate.
Claim 12
Dependent Claim
14 words
The process of claim 10 wherein said reaction mixture also comprises a metallic co-catalyst.
Claim 13
Dependent Claim
13 words
The process of claim 11 wherein said reaction mixture also comprises a surfactant.
Claim 14
Dependent Claim
15 words
The process of claim 12 wherein said amino acetal catalyst is bis(2-dimethylaminoethoxy)methane or 1,1-bis (2-dimethylaminoethoxy)ethane.
Claim 15
Dependent Claim
12 words
The process of claim 13 wherein said metallic co-catalyst is stannous octoate.
Claim 16
Dependent Claim
12 words
The process of claim 14 wherein said polyether polyol is oxypropylated glycerin.
Claim 17
Dependent Claim
11 words
The process of claim 15 wherein said amine catalyst is bis(2-dimethylaminoethoxy)methane.
Claim 18
Dependent Claim
11 words
The process of claim 15 wherein said amine catalyst is 1,1-bis(2-dimethylaminoethoxy)ethane.
References Cited (Backward Citations)
US2941967A
Cited
US3330782A
Cited
US3694510A
Cited
US3817997A
Cited
US3786029A
Cited
US3890255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |