公开(公告)号：US20170260320A1

公开(公告)日：2017-09-14

申请号：US15506916

申请日：2015-07-29

Applicant: BASF SE

Inventor： Stefan Bokern ,  Pierre Coppens ,  Patrick Bolze ,  Thomas Mathieu ,  Carola Melloh

IPC: C08G18/66 ,  C08G18/72 ,  C08G18/79 ,  C08G18/50 ,  C08G18/18 ,  C08G18/36 ,  C08G18/34 ,  C08G18/48 ,  C08G18/75 ,  C08G18/24

CPC classification number: C08G18/6696 ,  C08G18/165 ,  C08G18/18 ,  C08G18/20 ,  C08G18/246 ,  C08G18/3275 ,  C08G18/341 ,  C08G18/36 ,  C08G18/4812 ,  C08G18/482 ,  C08G18/4829 ,  C08G18/4837 ,  C08G18/4845 ,  C08G18/5024 ,  C08G18/722 ,  C08G18/755 ,  C08G18/792 ,  C08G2190/00

Abstract: The invention relates to a method for producing seals made of polyurethane, in which (a) aliphatic polyisocyanate, (b) compounds containing at least two isocyanate-reactive groups, (c) catalysts, (d) antioxidants and/or light stabilizers, and, optionally, (e) blowing agents, and (f) auxiliary agents and/or additives are mixed to form a reaction mixture, and the reaction mixture is allowed to complete the reaction to form polyurethane. The seal made of polyurethane has a Shore A hardness of less than 90 and a density of at least 850 g/L. The polymeric compounds having groups reactive toward isocyanate include b1) polyetherols having a functionality of 2 to 4 and a hydroxyl number of 20 to 100 mg KOH/g, b2) hydrophobic polyols having an OH number of less than 180 mg KOH/g and a functionality of greater than 2 to 3, and b3) chain extenders.

公开(公告)号：US10370480B2

公开(公告)日：2019-08-06

申请号：US15506916

申请日：2015-07-29

Applicant: BASF SE

Inventor： Stefan Bokern ,  Pierre Coppens ,  Patrick Bolze ,  Thomas Mathieu ,  Carola Melloh

IPC: C08G18/66 ,  C08G18/48 ,  C08G18/50 ,  C08G18/72 ,  C08G18/75 ,  C08G18/79 ,  C08G18/16 ,  C08G18/20 ,  C08G18/24 ,  C08G18/32 ,  C08G18/36 ,  C08G18/18 ,  C08G18/34

Abstract: The invention relates to a method for producing seals made of polyurethane, in which (a) aliphatic polyisocyanate, (b) compounds containing at least two isocyanate-reactive groups, (c) catalysts, (d) antioxidants and/or light stabilizers, and, optionally, (e) blowing agents, and (f) auxiliary agents and/or additives are mixed to form a reaction mixture, and the reaction mixture is allowed to complete the reaction to form polyurethane. The seal made of polyurethane has a Shore A hardness of less than 90 and a density of at least 850 g/L. The polymeric compounds having groups reactive toward isocyanate include b1) polyetherols having a functionality of 2 to 4 and a hydroxyl number of 20 to 100 mg KOH/g, b2) hydrophobic polyols having an OH number of less than 180 mg KOH/g and a functionality of greater than 2 to 3, and b3) chain extenders.