Claims
- 1. A method of preparing a polyurethane comprising reacting
- (a) a storage-stable solid isocyanate composition that is substantially crystalline at room temperature, wherein said isocyanate composition comprises the reaction product of an organic isocyanate and 2-methyl-1,3-propanediol in quantities such that from 1.2 to 6 moles of said organic isocyanate are used for each mole of 2-methyl-1,3-propanediol, with
- (b) an isocyanate-reactive compound.
- 2. A method of preparing a polyurethane comprising reacting
- (a) a storage-stable solid isocyanate composition in the form of fine crystals or powder, wherein said fine crystal- or powder-form isocyanate composition is prepared by
- (1) reacting an organic isocyanate with 2-methyl-1,3-propanediol in quantities such that from 1.2 to 6 moles of said organic isocyanate are used for each mole of 2-methyl-1,3-propanediol, and
- (2) grinding or milling the product formed in (a)(1),
- with
- (b) an isocyanate-reactive compound.
Parent Case Info
This application is a division of application Ser. No. 07/454,215 filed Dec. 21, 1989, now U.S. Pat. No. 5,043,472.
US Referenced Citations (27)
Divisions (1)
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Number |
Date |
Country |
Parent |
454215 |
Dec 1989 |
|