Patent ID: 9580570
Date: 2017-02-28
CPC Classifications: C08G,C08J,C08K,C08L

Claim:
1. A rigid polyurethane resin-forming composition (P) for cutting, comprising: a polyol component (A); an isocyanate component (B); an inorganic filler (C); and a dehydrating agent (D), the polyol component (A) comprising: wherein the bisphenol A alkylene oxide adduct composition (a) comprises a total of not more than 39% by weight of a bisphenol A alkylene oxide adduct (ak) prepared with at most 2 moles of alkylene oxide, based on 100% by weight of the bisphenol A alkylene oxide adduct composition (a), and a total of more than 61% by weight of a bisphenol A alkylene oxide adduct (ak′) prepared with more than 2 moles of alkylene oxide, based on 100% by weight of the bisphenol A alkylene oxide adduct composition (a), wherein the bisphenol A alkylene oxide adduct composition (a) has a hydroxyl value of 100 to 295 mg KOH/g, wherein the polyol (b) is a multi-functional aliphatic or alicyclic polyol having 3 to 8 functional groups, and has a hydroxyl value of 160 to 700 mg KOH/g, and wherein the weight of oxyethylene groups included in the polyol component (A) is not more than 10% by weight in 100% by weight of the polyol component (A).