Claims
- 1. A catalyst combination for polyurethane formation which comprises component (1) and component (2) wherein component (1) is 3-(N,N-dimethylamino)propionitrile, and component (2) is at least one of dimethylethanolamine and bis[2-(N,N-dimethylamino)ethyl]ether and wherein:
- i. when component (2) is dimethylethanolamine, the said dimethylethanolamine is present in an amount of at least one and not more than 50 weight percent, based on the weight of component (1) and dimethylethanolamine; and
- ii. when component (2) is bis[2-(N,N-dimethylamino)ethyl]ether, said bis-ether is present in an amount of at least one and not more than 25 weight percent, based on the combined weight of component (1) and said bis-ether.
- 2. A catalyst combination for polyurethane formation which comprises (1) 3-(N,N-dimethylamino)propionitrile and (2) dimethylethanolamine, said dimethylethanolamine being present in an amount of at least one and not more than 40 weight percent, based on the combined weight of (1) and (2).
- 3. A catalyst combination for polyurethane formation which comprises (1) 3-(N,N-dimethylamino)propionitrile and (2) bis[2-(N,N-dimethylamino)ethyl]ether, said bis-ether being present in an amount from one to 25 weight percent, based on the combined weight of (1) and (2).
- 4. A catalyst combination as defined in claim 3 in which said bis-ether is present in an amount substantially not in excess of about 10 weight percent.
Parent Case Info
This is a division of application Serial No. 369,556, filed June 13, 1973, now U.S. Pat. No. 3,925,268, granted Dec. 9, 1975. The said application Ser. No. 369,556 in turn is a continuation-in-part of application Ser. No. 353,212, filed Apr. 23, 1973, now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3821131 |
Priest et al. |
Jun 1974 |
|
3836488 |
Pruitt et al. |
Sep 1974 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
214,810 |
May 1957 |
AU |
879,169 |
Oct 1961 |
UK |
Divisions (1)
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Number |
Date |
Country |
Parent |
369556 |
Jun 1973 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
353512 |
Apr 1973 |
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