公开(公告)号：US3684770A

公开(公告)日：1972-08-15

申请号：US3684770D

申请日：1970-07-30

Applicant: BAYER AG

Inventor： MEISERT ERNST ,  AWATER ALBERT ,  MUHLHAUSEN CORNELIUS ,  DOBEREINER UWE JENS

IPC: C08G18/00 ,  C08G18/10 ,  C08G18/48 ,  C08G18/65 ,  C08G22/10 ,  C08G22/14 ,  C08G22/16

CPC classification number: C08G18/4812 ,  C08G18/10 ,  C08G18/4804 ,  Y10S528/902 ,  Y10S528/906 ,  C08G18/3203 ,  C08G18/664

Abstract: Polyurethane elastomers are prepared by reacting a prepolymer (A) of a polyether diol and a diisocyanate with a mixture (B) of a polyester diol and a lower molecular weight glycol at a temperature of from about 60*C. to about 180*C. The reaction product of (A) and (B) is resistant to separation and the polyurethane elastomers combine all of the advantageous properties of both polyether polyurethanes and polyester polyurethanes and are useful as foils and coatings and can be molded into a variety of elastomeric products.

Abstract translation: 聚醚二醇和二异氰酸酯的预聚物（A）与聚酯二醇和低分子量二醇的混合物（B）在约60℃至约180℃的温度下反应制备聚氨酯弹性体。 （A）和（B）的反应产物耐分离，聚氨酯弹性体结合了聚醚聚氨酯和聚酯聚氨酯两者的所有有利性质，并且可用作箔和涂料并且可以模制成各种弹性体产品。

公开(公告)号：US3640967A

公开(公告)日：1972-02-08

申请号：US3640967D

申请日：1969-04-21

Applicant: BAYER AG

Inventor： KONIG KLAUS ,  MULLER ERWIN ,  KALLERT WILHELM ,  MUHLHAUSEN CORNELIUS

IPC: C07C243/34 ,  C08G18/10 ,  C08G18/42 ,  C08G18/44 ,  C08G18/66 ,  C08G18/67 ,  C08G22/10

CPC classification number: C08G18/675 ,  C07C243/34 ,  C08G18/10 ,  C08G18/4277 ,  C08G18/4283 ,  C08G18/44 ,  C08G18/6633 ,  C08G18/3834

Abstract: A PROCESS FOR THE PREPARATION OF POLYURETHANES, WHICH MAY OR MAY NOT BE CROSS-LINKED, FROM HIGHER MOLECULAR WEIGHT, LINEAR DIHYDROXY COMPOUNDS, DIISOCYANATES AND LOW MOLECULAR WEIGHT CHAIN LENGTHENING AGENTS WHICH CONTAIN AT LEAST TOW HYDROGEN ATOMS THAT ARE REACTIVE WITH ISOCYANATES, CHARACTERIZED IN THAT THE HIGHER MOLECULAR WEIGHT DIHYDROXY COMPOUNDS USED ARE REACTION PRODUCTS OF $-CAPROLACTONE AND/OR $-HYDROXYCAPROIC ACID, HEXANE-1,6-DIOL AND DIARYL CARBONATES.