| abstract |
A method of protecting cementware from frost-damage, which comprises coating the cementware with a moisturecure type urethane resin coating impregnated with a weblike or three-dimensionally structured organopolysiloxane compound represented by the rational formula: R2Si2O3 wherein R is alkyl, hydroxyalkyl, aryl or aralkyl, of about 0.5 to 50 parts by weight relative to 100 parts by weight of resin portion in the urethane resin coating, and a composition therefor. The cementware applied with the composition has an excellent water repellency and an improved protective effect from frost-damage. |