Water-souluble polyurthane having comb-shaped hydrophobic group and application thereof
申请人:——
公开号:US20020045724A1
公开(公告)日:2002-04-18
Water-soluble polyurethane according to the present invention is obtained from polyalkylene glycols, diisocyanates, and comb-shaped hydrophobic diols represented by the following general formula (3):
1
wherein each of R
1
, R
2
and R
3
is a hydrocarbon group; each of Y and Y′ is hydrogen, a methyl group or a CH
2
Cl group; each of Z and Z′ is oxygen, sulfur or a CH
2
group; n is an integer of 0 to 15 when Z is oxygen and is 0 when Z is sulfur or a CH
2
group; n′ is an integer of 0 to 15 when Z′ is oxygen and is 0 when Z′ is sulfur or a CH
2
group.
The water-soluble polyurethane is used as, for example, an extruding auxiliary for cement materials, a mortar thickening agent, an underwater concrete thickening agent, a ceramics forming binder and a moisturizer for hair cosmetics, all of which are characterized by excellent water retention and high shape retention.
根据本发明,水溶性聚氨酯由聚亚烷基二醇、二异氰酸酯和梳状疏水二元醇制得,其通式(3)如下:
1
其中每个 R
1
, R
2
和 R
3
是烃基;Y 和 Y′各自是氢、甲基或 CH
2
Cl基团;Z和Z′各自为氧、硫或CH
2
当 Z 为氧时,n 为 0 至 15 的整数,当 Z 为硫或 CH 2 Cl 基团时,n 为 0。
2
当 Z′为氧时,n 为 0 至 15 的整数,当 Z′为硫或 CH 2 基团时,n 为 0。
2
基团时为 0。
水溶性聚氨酯可用作水泥材料的挤出助剂、砂浆增稠剂、水下混凝土增稠剂、陶瓷成型粘结剂和头发化妆品保湿剂等,所有这些产品的特点都是保水性好、保形性高。