公开(公告)号：US09441068B2

公开(公告)日：2016-09-13

申请号：US14344343

申请日：2012-09-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Elisa Corinti ,  Andrea Benvenuti ,  Alessio Sabadini ,  Jean-Paul Masy ,  Francois M. Casati ,  Brian Dickie

IPC: C08G18/76 ,  C08G18/48 ,  C08G18/63 ,  C08G18/40 ,  C08G18/08 ,  C08G18/18 ,  C08G18/32 ,  C08J9/00 ,  C08G101/00

CPC classification number: C08G18/7657 ,  C08G18/14 ,  C08G18/1833 ,  C08G18/3206 ,  C08G18/4072 ,  C08G18/4812 ,  C08G18/4825 ,  C08G18/4829 ,  C08G18/4833 ,  C08G18/4841 ,  C08G18/4845 ,  C08G18/632 ,  C08G18/7671 ,  C08G2101/0008 ,  C08G2101/0033 ,  C08G2101/0083 ,  C08J9/0042 ,  C08J2375/08

Abstract: Embodiments of the invention provide for viscoelastic polyurethane foams. The foams are made from reaction system which includes (a) an isocyanate reactive component, (b) a isocyanate component, (c) one or more blowing agents, (d) a catalyst component, and (e) a silicone based surfactant. The isocyanate reactive component includes at least (i) from 25 to 80% by weight of at least one polyoxyethylene capped polyoxypropylene/polyoxyethylene polyol having a combined number average equivalent weight from 1300 to 1700, a polyoxyethylene percentage of between 75% and 95% by weight of the combined amounts of polyoxypropylene and polyoxyethylene, and a primary OH percentage of between 80 and 95% of the total number of OH groups of the polyoxyethylene capped polyoxypropylene/polyoxyethylene polyol, and (ii) from 5 to 30% by weight of the isocyanate reactive component of at least one low functionality polyol having a functionality of between 1.5 and 2.5, a combined number average equivalent weight from 500 to 1500 and an OH number of 40 to 70.

Abstract translation: 本发明的实施方案提供了粘弹性聚氨酯泡沫。 泡沫由反应体系制成，其包括（a）异氰酸酯反应性组分，（b）异氰酸酯组分，（c）一种或多种发泡剂，（d）催化剂组分和（e）硅氧烷基表面活性剂。 异氰酸酯反应性组分包括至少（i）25至80重量％的至少一种聚均数当量为1300至1700的聚氧乙烯封端的聚氧丙烯/聚氧乙烯多元醇，聚氧乙烯百分比为75-95％ 聚氧丙烯和聚氧乙烯的组合量的重量，聚氧乙烯封端的聚氧丙烯/聚氧乙烯多元醇的OH基总数的80-95％的主要OH百分比，和（ii）5-30重量％ 至少一种官能度为1.5至2.5的低官能度多元醇的异氰酸酯反应性组分，组合的数均当量为500至1500，OH数为40至70。