The present invention is directed to a process for producing a molded product comprising
A) reacting:
i) an organic polyisocyanate having an isocyanate group content of from 5 to 45% by weight, preferably from 15 to 35% by weight, and most preferably from 20 to 35% by weight, prepared by reacting:
a) an organic di- and/or polyisocyanate, and
b) an active hydrogen containing fatty acid ester prepared by reacting an alcohol or polyol with an aliphatic, saturated or unsaturated fatty acid, said ester being characterized in that at least one aliphatic acid which contains more than 8 carbon atoms is built into the molecule, said ester further characterized as having an acid number of from 0 to 100 and a hydroxyl number of from 0 to 150 with at least one of said numbers being greater than zero, said ester having an average molecular weight of from 500 to 5000,
ii) an isocyanate reactive component comprising:
a) from about 0.5 to about 10% by weight based on the weight of components ii)b) and ii)c), of a zinc carboxylate containing from 8 to 24 carbon atoms per carboxylate group,
b) from about 0.5 to 100% by weight, preferably from 0.5 to 95% by weight, more preferably from 5 to 45% by weight, and most preferably from 10 to 35% by weight, based on the weight of components ii)b) and ii)c), of a compatibilizer which compatibilizes said carboxylate in component ii), and
c) from 0 to about 99.5% by weight, preferably from 5 to 99.5% by weight, more preferably from 55 to 95% by weight, and most preferably from 65 to 90% by weight, based on the weight of components ii)b), and ii)c), of at least one active hydrogen containing compound other than said compatibilizer,
at an isocyanate index of from about 90 to about 400 and preferably from about 95 to about 115, in a closed mold,
B) allowing the components to react, and
C) removing the product from the mold.
本发明涉及一种生产模塑产品的工艺,包括
A) 反应
i) 一种有机多
异氰酸酯,其
异氰酸酯基含量为 5-45%(重量比),优选 15-35%(重量比),最优选 20-35%(重量比):
a) 有机二
异氰酸酯和/或多
异氰酸酯,和
b) 一种活性含氢
脂肪酸酯,由醇或多元醇与脂肪族饱和或不饱和
脂肪酸反应制备,所述酯的特征在于分子中至少含有一种含 8 个以上碳原子的脂肪族酸,所述酯的进一步特征在于酸数为 0 至 100,羟基数为 0 至 150,其中至少一个数字大于零,所述酯的平均分子量为 500 至 5000、
ii)
异氰酸酯活性组分,包括
a) 以成分 ii)b) 和 ii)c) 重量计,约 0.5 至约 10%的
羧酸锌,每个
羧酸基含有 8 至 24 个碳原子、
b) 以组分 ii)b) 和 ii)c) 的重量为基准,约 0.5%至 100%(按重量计),优选 0.5%至 95%(按重量计),更优选 5%至 45%(按重量计),最优选 10%至 35%(按重量计)的相容剂,该相容剂可使组分 ii) 中的所述
羧酸盐相容,以及
c) 以组分 ii)b) 和 ii)c) 重量为基准,0 至约 99.5%(以重量计),优选 5 至 99.5%(以重量计),更优选 55 至 95%(以重量计),最优选 65 至 90%(以重量计)的至少一种活性含氢化合物,而不是所述相容剂、
在封闭模具中,
异氰酸酯指数约为 90 至约 400,最好约为 95 至约 115、
B) 让各组分反应,以及
C) 从模具中取出产品。