| 摘要 |
1,203,693. Polyurethane coating. TAKEDA CHEMICAL INDUSTRIES Ltd. 21 March, 1968 [23 March, 1967], No. 13655/68. Heading B2E. [Also in Division C3] A vertical surface of a steel plate may be coated with a thixotropic polyurethane composition prepared by mixing a 75% by weight ethyl acetate solution of a polyurethane prepolymer prepared from trimethylolpropane and an 8:2 weight ratio mixture of 2, 4-tolylene . diisocyanate and 2, 6-tolylene diisocyanate with a colloidal silica of 5 to 40 Á average particle size, polyethylene glycol, thinner and a polyesterpolyol.
|
