Aqueous polyurethane dispersion for use as bonding agents in adhesives, particularly in concealment adhesives, and for coating and impregnating for leather, has polyethercarbonate polyol as structure component

摘要

The aqueous polyurethane dispersion has polyethercarbonate polyol as a structure component. The polyethercarbonate polyol is a diol, and has 0.5 wt.% of carbonates. The polyethercarbonate polyol has formula (I). The polyethercarbonate polyol has formula (I). R1 : Water molecule, polyvalent alcohol, polyvalent amines, polyvalent thiol, polyvalent amino alcohol, polyvalent thio alcohol, polyesterol, polycarbonates, PolyTHF(RTM: polytetramethylene ether glycol), polyether amine, polyether thiol, polyacrylate, mono or diglyceride of castor oil, monoglyceride of fatty acids, mono, di, triglyceride or 1-24C alkyl fatty acid esters having 2 hydroxyl group; R2 : CH2-CH2; R3 : CH2CH(CH3); R4 : CH2-CH(R5), CH(R6)-CH(R6), CH2-C(R6)2, C(R6)2-C(R6)2, CH2-CH-CH2-R8, C6H6-CH-CH2 or C6H6-C(CH3)-CH2, where R5=branched or linear 2-24C alkyl or alkene residue, R6= branched or linear 1-24C alkyl or alkene residue, R8=OH, Cl, OCH3, OCH2-CH3, O-CH2-CH=CH2, or O-CH=CH2. [Image].