Claims
- 1. An isocyanate reactive mixture comprising
- a polyether having at least two isocyanate-reactive groups and a molecular weight of from 1800 to 12,000 in which at least 50% of the isocyanate-reactive groups are primary and/or secondary amine groups,
- ii) an amine-terminated chain extender, and
- iii) from 2 to 20 parts by weight per 100 parts by weight of components i) and ii) of propylene carbonate.
- 2. The mixture of claim 1 wherein component iii) is used in an amount of from 4 to 15 parts by weight, per 100 parts by weight of components b) and c).
- 3. The mixture of claim 1 wherein said polyether is obtained by the hydrolysis of a compound containing isocyanate end groups.
CROSS REFERENCE TO RELATED APPLICATION
This application is a division of application Ser. No. 07/546,078 filed Jun. 29, 1990 now U.S. Pat. No. 5,028,635, which was a continuation-in-part if Ser. No. 07/463,762 filed Jan. 12, 1990, now abandoned which was a continuation of Ser. No. 07/346,186, filed May 4, 1989, now abandoned, which in turn was a continuation-in-part of Ser. No. 07/212,751 filed Jun. 28, 1988 now abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (1)
Number |
Date |
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0276452 |
Mar 1988 |
EPX |
Divisions (1)
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546078 |
Jun 1990 |
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Continuations (1)
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346186 |
May 1989 |
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Continuation in Parts (2)
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463762 |
Jan 1990 |
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212751 |
Jun 1988 |
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