公开(公告)号：US3899454A

公开(公告)日：1975-08-12

申请号：US36088373

申请日：1973-05-16

Applicant: BAYER AG

Inventor： WAGNER KUNO ,  DIETRICH WERNER ,  KRAFT KARL-JOSEF ,  CONRAD HORST

IPC: C08G18/72 ,  C08G18/78 ,  C08G18/79 ,  C08G18/14

CPC classification number: C08G18/725 ,  C08G18/7831

Abstract: A process is provided for the production of synthetic polyurethane plastics, particularly foam plastics, containing biuret groups by reacting polyisocyanates, polyhydroxyl and/or polycarboxyl compounds, flame inhibitors and, if desired, blowing agents, emulsifiers, activators and other additives which is characterized by using as the polyisocyanate solutions in monomeric polyisocyanates of from about 1 per cent to 85 per cent of polyisocyanates containing biuret groups and having the formula:

in which R is an aromatic, araliphatic or cycloaliphatic radical which may, if desired, be substituted and N IS AN INTEGER FROM 0 TO 5, WHEREIN THE PROPORTION OF BIURETPOLYISOCYANATES HAVING MORE THAN THREE ISOCYANATE GROUPS IS AT LEAST 20 PER CENT BY WEIGHT BASED ON THE TOTAL QUANTITY OF BIURET-POLYISOCYANATES, AND THE SOLUTIONS CONTAIN FROM ABOUT 0.03 PER CENT TO ABOUT 5 PER CENT BY WEIGHT OF CHEMICALLY COMBINED EMULSIFIERS.

Abstract translation: 提供了一种通过使多异氰酸酯，多羟基和/或多羧基化合物，阻燃剂以及如果需要的话发泡剂，乳化剂，活化剂和其它添加剂反应生成含有缩二脲基团的合成聚氨酯塑料，特别是泡沫塑料的方法。 在单体多异氰酸酯中使用约1％至85％的含有缩二脲基团的多异氰酸酯并具有下式的多异氰酸酯溶液：O PARALLEL OCN-RNCNR-NCO || O = C（CO-N-nH || H - N-CO）n-NR-NCO || R-NCOR | NCO，其中R是芳族，芳脂族或脂环族基团，如果需要，其可以被取代，并且N是整数，从0到5，在比例 具有超过三个异氰酸酯基团的多元醇 - 聚异氰酸酯基于基于多元醇 - 聚异氰酸酯的总量的重量至少为20个百分点，以及从化学合金重量的约0.03个百分点至约5个百分点的解决方案 INED EMULSIFIERS。