摘要
介绍了以一种化学后处理法降低TDI-TMP型聚氨酯固化剂中游离TDI的工艺方法,其合成思路主要为:利用反应过程中空间位阻的影响而导致在TDI单体及聚氨酯加成物上-NCO基的化学反应活性的差异,选用高选择性的催化剂和特定的工艺条件,促进游离TDI的自聚反应,并使其成为聚氨酯固化剂中的组成部分,从而达到降低游离TDI之目的。
A post-processing chemical method of reducing free TDI content in TDI-TMP curing agent was introduced.The main ideas of the synthesis process：using the effect of steric hindrance resulting in different chemical reactivity of NCO groups among TDI monomers and polyurethane adducts,selecting highly selective catalyst and specific process conditions,promoting self-polymerization of free TDI,and making it becoming an integral part of polyurethane curing agent,so as to achieve the purpose of reducing free TDI.
出处
《上海涂料》
CAS
2011年第3期1-5,共5页
Shanghai Coatings
