Title:
HOT MELT ADHESIVE COMPOSITION AND LAMINATE
Document Type and Number:
WIPO Patent Application WO/2022/202570
Kind Code:
A1
Abstract:
This hot melt adhesive composition contains an acid-modified polyolefin and a copolymerized polyester and satisfies the following (1)-(5). (1) The copolymerized polyester is composed of a dicarboxylic acid component and a glycol component and has a melting point (T1) of 80-150ºC, as obtained by a differential scanning calorimeter (DSC). (2) The melting point (T2) of the acid-modified polyolefin, as obtained by the DSC, is 60-150ºC. (3) |T1-T2|≤40ºC. (4) When the acid value of the acid-modified polyolefin is defined as AV (eq/ton) and the hydroxyl value of the copolymerized polyester is defined as OHV (eq/ton), 0.5≤AV/OHV≤4.5. (5) When the total amount of the acid-modified polyolefin and the copolymerized polyester is 100 mass%, the content of the acid-modified polyolefin is 5-40 mass% and the content of the copolymerized polyester is 60-95 mass%, and when the total amount of the whole hot melt adhesive composition is 100 mass%, the total amount of the acid-modified polyolefin and the copolymerized polyester is at least 70 mass%.
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Inventors:
YAMASHITA YOJI (JP)
KASHIHARA KENJI (JP)
FUJIMOTO MOTOKI (JP)
KASHIHARA KENJI (JP)
FUJIMOTO MOTOKI (JP)
Application Number:
PCT/JP2022/012056
Publication Date:
September 29, 2022
Filing Date:
March 16, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/30; B32B7/12; B32B27/32; C09J123/26; C09J167/02
Foreign References:
| JP2017193699A | 2017-10-26 | |||
| JP2012233119A | 2012-11-29 | |||
| JP2018126947A | 2018-08-16 | |||
| JPH0586239A | 1993-04-06 |
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