Invention Publication
- Patent Title: HOT-MELT COMPOSITION
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Application No.: US18269434Application Date: 2021-12-06
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Publication No.: US20240059931A1Publication Date: 2024-02-22
- Inventor: Misaki MATSUMURA
- Applicant: SIKA JAPAN LTD
- Applicant Address: JP Tokyo
- Assignee: SIKA TECHNOLOGY AG
- Current Assignee: SIKA TECHNOLOGY AG
- Current Assignee Address: CH Baar
- Priority: JP 20213744 2020.12.23
- International Application: PCT/JP2021/044651 2021.12.06
- Date entered country: 2023-06-23
- Main IPC: C09J7/35
- IPC: C09J7/35 ; C09J11/06 ; C09J11/08 ; C09J125/04

Abstract:
A hot-melt composition has excellent workability, hot flow resistance, balance between adhesion and detachability, volatility resistance, and hot creep resistance. The hot-melt composition includes: as thermoplastic elastomers, a styrene-based thermoplastic elastomer having a weight average molecular weight of 300,000 or more, a styrene-based thermoplastic elastomer having a styrene content of no greater than 20% by mass, and an olefin-based thermoplastic elastomer including an ethylene propylene rubber and/or butyl rubber; as tackifiers, an aromatic petroleum resin, a terpene phenol resin, and an amorphous polyalphaolefin; a high molecular weight paraffin oil having a weight average molecular weight of 1,000 or more; and a low molecular weight paraffin oil having a weight average molecular weight of less than 1,000.
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