Invention Grant
- Patent Title: Polyolefin hot-melt glue having a low reactivation temperature and high heat stability and use thereof for vacuum deep-drawing lamination
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Application No.: US15753891Application Date: 2016-09-13
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Publication No.: US10767083B2Publication Date: 2020-09-08
- Inventor: Doreen Janke , Kai Paschkowski , Mathias Cordes , Dirk Urbach
- 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: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@791051bc
- International Application: PCT/EP2016/071489 WO 20160913
- International Announcement: WO2017/046045 WO 20170323
- Main IPC: C09J5/06
- IPC: C09J5/06 ; B32B27/32 ; C09J123/14 ; C08L23/14 ; B32B27/36 ; B32B27/30 ; C08L51/06 ; B32B27/12 ; B32B7/12 ; B32B27/34 ; B32B15/085 ; B32B37/12 ; C08J5/12 ; C09J123/02

Abstract:
A hot-melt glue composition, including a) at least one atactic poly-α-olefin (APAO) that is solid at 25° C.; b) at least one hydrocarbon resin having a softening point of at least 80° C., measured in accordance with the ring-and-ball method according to DIN EN 1238; and c) at least one maleic-anhydride-grafted wax having a softening point of not more than 150° C., measured in accordance with the ring-and-ball method according to DIN EN 1238, which is a maleic-anhydride-grafted polypropylene wax or a maleic-anhydride-grafted polyethylene wax, wherein the proportion of the at least one maleic-anhydride-grafted wax in the hot-melt glue composition is at least 3 wt %. The hot-melt glue composition is characterized by a low reactivation temperature, together with high heat resistance and good adhesion to ABS and nonpolar polyolefin materials. The hot-melt glue composition is well suited for film lamination by vacuum deep-drawing lamination, in particular for applications in automobile construction.
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