Invention Grant
- Patent Title: One-part polyurethane adhesive with high green strength
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Application No.: US15767670Application Date: 2016-12-16
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Publication No.: US10253227B2Publication Date: 2019-04-09
- Inventor: Hong Yao
- 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: EP15201173 20151218
- International Application: PCT/EP2016/081382 WO 20161216
- International Announcement: WO2017/103070 WO 20170622
- Main IPC: C09J175/04
- IPC: C09J175/04 ; C08G18/48 ; C08G18/75 ; C08G18/76 ; C08G18/12 ; C08G18/20 ; C08G18/24 ; C09D175/04 ; C08G18/30 ; C08G18/40 ; C08G18/42 ; C08G18/10 ; C08G18/16 ; C08G18/18 ; C09J5/06

Abstract:
A one-part polyurethane composition includes the reaction product of at least one polyether polyol PO, at least one thermoplastic polyester polyol PE, at least one hydrophobic polyol PH, and at least one polyisocyanate PI, preferably methylene diphenyl diisocyanate (MDI), wherein the composition has a remaining isocyanate content of between 0.8 and 3.5 wt.-%, preferably between 1.4 to 1.8 wt.-%, based on the total weight of the isocyanate-functional polymers comprised therein, and wherein said polyether polyol PO includes a bifunctional polyether polyol PO1 and a trifunctional polyether polyol PO2 and wherein said hydrophobic polyol PH is a polyester polyol based on fatty acids. The inventive one-component composition exhibits high green strength and long open time, as well as high storage stability. It is especially suitable as adhesive, in particular for automotive windshields and is preferably applied warm.
Public/Granted literature
- US20180305597A1 ONE-PART POLYURETHANE ADHESIVE WITH HIGH GREEN STRENGTH Public/Granted day:2018-10-25
Information query
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