Novel polymerizable imidazolidinone monomers, useful in the preparation of self-crosslinking polymers, have the general structure
wherein R1 is H or a C1-C6 linear or branched alkyl or hydroxyalkyl group; X is a divalent radical selected from the group consisting of
and.
with R being H or CH3, m being 0-5, and n being 1-5; R2 is H or CH3; R3 is H or
with R' as defined above; and R4 and R5 are independently H or linear or branched C1-C4 alkyl groups. In a preferred embodiment, aqueous emulsions of the imidazolidinone-containing polymers (e.g. 45-60% vinyl acetate, 34-52% butyl acrylate, and 3-6% imidazolidinone) and an acid-curing catalyst (e.g. ZnCl2) are used as formaldehyde-free binders for nonwoven textiles.
用于制备自交联聚合物的新型可聚合
咪唑烷酮单体具有以下一般结构
其中 R1 是 H 或 C1-C6 直链或支链烷基或羟基烷基;X 是二价基,选自由以下组成的组
和
R为H或
CH3,m为0-5,n为1-5; R2为H或 ; R3为H或 ,R'如上定义;和
R'如上定义;R4 和 R5 独立地为 H 或直链或支链 C1-C4 烷基。在一个优选的实施方案中,含
咪唑烷酮聚合物(如 45-60%
乙酸乙烯酯、34-52%
丙烯酸丁酯和 3-6%
咪唑烷酮)和酸固化催化剂(如 ZnCl2)的
水乳液可用作无纺布纺织品的无
甲醛粘合剂。