Invention Grant
- Patent Title: Two-component polyurethane composition with adjustable pot life
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Application No.: US16623921Application Date: 2018-06-29
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Publication No.: US11407893B2Publication Date: 2022-08-09
- Inventor: Urs Burckhardt , Michael Schlumpf , Antonio Corsaro
- Applicant: SIKA TECHNOLOGY AG
- Applicant Address: CH Baar
- Assignee: SIKA TECHNOLOGY AG
- Current Assignee: SIKA TECHNOLOGY AG
- Current Assignee Address: CH Baar
- Agency: Oliff PLC
- Priority: EP17179020 20170630
- International Application: PCT/EP2018/067555 WO 20180629
- International Announcement: WO2019/002538 WO 20190103
- Main IPC: C08L75/04
- IPC: C08L75/04 ; C08G18/22 ; C08G18/32 ; C08G18/38 ; C08G18/76 ; C09J175/04

Abstract:
A polyurethane composition including a first and a second component, wherein the first component is a polyol with an OH functionality in the range from 1.5 to 4 and a mean molecular weight in the range from 250 to 15,000 g/mol, a diol with two hydroxyl groups which are linked via a C2 to C0 carbon chain, and a compound that includes at least one thiol group. One of the two components also additionally contains at least one metal catalyst for the reaction of hydroxyl groups and isocyanate groups which can form thio complexes, and the second component contains enough polyisocyanate that at least 5% by weight of isocyanate groups, in relation to the total polyurethane composition, are contained, and the molar ratio of all thiol groups of the mentioned compound to all metal atoms of the metal catalyst is between 1:1 and 250:1.
Public/Granted literature
- US20200207980A1 TWO-COMPONENT POLYURETHANE COMPOSITION WITH ADJUSTABLE POT LIFE Public/Granted day:2020-07-02
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