公开(公告)号：US12234366B2

公开(公告)日：2025-02-25

申请号：US17291174

申请日：2019-12-18

Applicant: SIKA TECHNOLOGY AG

Inventor： Didier Lootens ,  Maxime Liard ,  Nicolas Bernardini ,  Fleur Chaignon-Lesetre ,  Antonio Corsaro

IPC: B29C64/106 ,  B33Y70/00 ,  C08G18/22 ,  C08G18/32 ,  C08G18/38 ,  C08G18/48 ,  C08G18/66 ,  C08G18/76 ,  C09D11/102 ,  B29K75/00 ,  B33Y10/00

Abstract: A method applying a two-component polyurethane composition by means of 3D printing, including steps providing pumpable first component A including at least one polyol having OH functionality in range from 1.5-4 and average molecular weight Mn in range from 250 to 15 000 g/mol, and at least one diol having two hydroxyl groups joined via a C2-C9 carbon chain, and at least one compound T having at least one thiol group; feeding pumpable second component B into continuous mixer's mixing region, where second component B includes at least one polyisocyanate; wherein one of components A and B additionally includes at least one metal catalyst for reaction of hydroxyl groups and isocyanate groups that is able to form thio complexes, and molar ratio of all thiol groups in at least one compound T to all metal atoms in at least one metal catalyst K is between 1:1 and 250:1.