| 摘要 |
Addition of 0.2 to 0.4 parts of a liquid block copolymer silicone to 100 parts of an organic isocyanate to lower the surface tension of the resulting composition to less than 40 dynes/centimeter to obtain an isocyanate composition that has long room storage stability without crystallization and when used in an impingement type mixture produces polyurethane of a more uniform composition. |
