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US5703158A Aqueous anionic poly (urethane/urea) dispersions 失效
水性阴离子聚(氨基甲酸酯/尿素)分散体

Aqueous anionic poly (urethane/urea) dispersions
摘要:
Sulfonated polyester polyols and mixtures of sulfonated polyester polyols and hydroxy carboxylic acids are used to prepare improved aqueous anionic poly(urethane/urea) dispersions with a high crystallization rate, low heat activation temperature, high green strength, stability at low pH, which show good compatibility with other water based polymers and with crosslinkers. The aqueous anionic poly(urethane/urea) dispersions have high heat resistance after curing or blending with a crosslinker.
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