| 主权项 |
1. A polyurethaneurea solution comprising a polyurethaneurea having a structural unit of the formula (I)and terminated with at least one copolymer unit selected from the group consisting of a polyethylene oxide, a polypropylene oxide, and mixtures thereof, and wherein the polyurethaneurea solution is obtained by reacting
a. a polycarbonate polyol a1) which is obtained by reacting a carbonic acid derivative with a difunctional alcohol of the formula (II)and
a polycarbonate polyol a2) having an average hydroxyl functionality from 1.7 to 2.3 and a molecular weight, as determined by the OH number, from 400 to 6,000 g/mol, based on hexane-1,6-diol, butane-1,4-diol or mixtures thereof, b. a polyisocyanate component, c. a polyoxyalkylene ether component, d. a diamine and/or amino alcohol component and, e. a second polyol component, wherein the second polyol component is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propanediol, 1,3 propanediol, 1,4-butanediol, 1,3-butylene glycol, cyclohexanediol, 1,4-cyclohexanedimethanol, 1,6-hexanediol, neopentyl glycol, hydroquinone dihydroxyethyl ether, bisphenol A (2,2-bis(4-hydroxyphenyl)propane), hydrogenated bisphenol A (2,2-bis(4-hydroxycyclohexyl)propane), trimethylolpropane, glycerol, pentaerythritol, α-hydroxybutyl-ε-hydroxycaproic esters, ω-hydroxyhexyl-γ-hydroxybutyric esters, adipic acid (β-hydroxyethyl) esters, terephthalic acid bis(β-hydroxyethyl) ester, and mixtures thereof. |
