Claims
- 1. A process for producing a semi-rigid polyurethane foam, comprising reacting a polyol with a polyisocyanate in the presence of a catalyst, a foaming agent, and other necessary auxiliary agents,
- wherein said catalyst comprises a compound of formula (I): ##STR4## wherein n=0-3 and R.sub.1, R.sub.2 and R.sub.3 are each independently a C.sub.1-3 alkyl group;
- and triethylene diamine (II) in a weight ratio of (I)/(II) ranging from 0.75 to 12.
- 2. The process for producing a polyurethane foam according to claim 1, further comprising molding and processing said polyurethane foam in combination with or integratedly with another material.
- 3. The process for producing a polyurethane foam according to claim 1, wherein the foaming agent is selected from the group consisting of water and a halogenated hydrocarbon or a mixture thereof.
- 4. The process for producing a polyurethane foam according to claim 2, wherein said other material is selected from the group consisting of polyvinylchloride resin, ABS resin, and polycarbonate resin or a mixture thereof.
- 5. A polyurethane comprising the reaction product of a polyol with a polyisocyanate and an amine catalyst wherein said amine catalyst is an amine of the formula (I): ##STR5## wherein, n is an integer from 0 to 3, and R.sub.1, R.sub.2, and R.sub.3 are each independently a C.sub.1-3 alkyl group.
- 6. The polyurethane according to claim 5, wherein the polyurethane is a foam.
- 7. The process for producing a polyurethane foam according to claim 2, wherein the foaming agent is selected from the group consisting of water and a halogenated hydrocarbon or a mixture thereof.
Priority Claims (2)
Number |
Date |
Country |
Kind |
2-199268 |
Jul 1990 |
JPX |
|
3-188280 |
Jul 1991 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 07/737,697, filed on Jul. 30, 1991.
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Number |
Name |
Date |
Kind |
5134217 |
Weider et al. |
Jul 1992 |
|
5162386 |
Coppola et al. |
Nov 1992 |
|
5173516 |
Vratsouos |
Dec 1992 |
|
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0000389 |
Jan 1979 |
EPX |
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Divisions (1)
|
Number |
Date |
Country |
Parent |
737697 |
Jul 1991 |
|