• Elastomers and Composites
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• v.33 no.3
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• pp.177-184
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• 1998

Polyurethane(PU) prepolymers were synthesized from polytetramethylene ether glycol(PTMG), with 4,4'-diphenylmethane diisocyanate(MDI), toluene 2,4-diisocyanate (TDI) and isophoron diisocyanate(IPDI). After chain extention using n-methyl-diethanol amine(n-MDEA), aqueous polyurethane cationomers were prepared by addition of glycolic acid(GA) as a quaternizer. The effect of the content of chain extender and the degree of neutralization on the stability of emulsion, adhesive strength, viscosity, glass transition temperature and physical properties of emulsion cast film were investigated using UTM, viscometer and DSC.