It is the object of the present invention to provide a flexible, low density, integral skin polyurethane foam capable of use in various applications comprising the reaction product of;
a) a polyisocyanate component; and
b) an active hydroxy functional polyol composition;
in the presence of
c) a blowing agent including a non-chlorinated pentafluoropropane and optionally water;
d) a catalyst; and
e) optionally one or more compounds selected from the group consisting essentially of chain extenders, a surfactant, an alcohol having from 10 to 20 carbons, fillers, pigments, antioxidants, stabilisers and mixtures thereof.
The general process comprises reacting a polyisocyanate component with an isocyanate reactive compound in the presence of a catalyst of a type known by those skilled in the art and a non-chlorinated pentafluoropropane blowing agent optionally in association with water as a co-blowing agent. A catalyst which assists in controlling foam formation may be used as well as a surfactant to regulate cell size and structure.
本发明的目的是提供一种可用于各种用途的柔性低密度自结皮聚
氨酯泡沫塑料,该泡沫塑料由以下物质的反应产物组成;
a) 多
异氰酸酯成分;和
b) 活性羟基官能团多元醇成分;
在存在以下物质的情况下
c) 一种发泡剂,包括一种非
氯化五
氟丙烷和
水;
d) 催化剂;以及
e) 可选的一种或多种化合物,选自主要由扩链剂、表面活性剂、具有 10 至 20 个碳原子的醇、填料、
颜料、
抗氧化剂、稳定剂及其混合物组成的组。
一般工艺包括在本领域技术人员已知类型的催化剂和非
氯化五
氟丙烷发泡剂的存在下,使聚
异氰酸酯组分与
异氰酸酯活性化合物反应,也可选择与
水作为共发泡剂一起反应。可使用有助于控制泡沫形成的催化剂以及表面活性剂来调节泡孔大小和结构。