adhesive composition

A composition and adhesive technology, which can be applied in the directions of adhesives, polymer adhesive additives, adhesive additives, etc., can solve the problems of limited use and reduced heat resistance, etc.

CN109476966BActive Publication Date: 2021-04-20SUNSTAR GIKEN KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-04-20

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Abstract

The present invention provides a hot-melt adhesive having a sufficiently long pot life and exhibiting good strength and heat resistance. The invention relates to a hot-melt adhesive composition containing hydrocarbon cyclic polymer, α-olefin polymer and tackifying resin.
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Description

technical field

[0001] The present invention relates to a hot-melt adhesive composition containing hydrocarbon cyclic polymer, α-olefin polymer and tackifying resin. Background technique

[0002] Currently, polyolefin resins such as polypropylene are mostly used for automobile parts and the like because they are excellent in processability and strength. As an adhesive used when bonding a member made of these polyolefin resins to an adherend, a hot-melt adhesive containing an α-olefin polymer and a tackifying resin is often used.

[0003] Patent Document 1 proposes a hot melt adhesive composition comprising crystalline polybutene having a specific melt index, a hydrogenated tackifier resin, at least one non-hydrogenated tackifier resin, and a polypropylene wax .

[0004] Patent Document 2 proposes a hot-melt adhesive composition that further contains a polymer having a specific α-olefin unit and a branched chain number per specific α-olefin unit, and optionally a tackifier,...

Examples

Embodiment 1～7 and comparative example 1～3

[0093] With the composition shown in the following Table 1, each component was mixed at 180° C. using a mixing mixer (SV-1-1 double arm type kneader manufactured by Moriyama Seisakusho Co., Ltd.), thereby obtaining a hot-melt adhesive composition .

[0094] [Table 1]

[0095]

[0096] Unit: g

[0097] *1 VESTOPLAST (registered trademark) 888 (Evonic, ethylene-propylene-1-butene copolymer, melting point: 160°C, melt viscosity: 120000mPa·s (190°C), weight average molecular weight: 104000)

[0098] *2 VESTOPLAST (registered trademark) EP807 (Evonic, ethylene-propylene-1-butene copolymer, melting point: 161°C, melt viscosity: 7000mPa·s (190°C), weight average molecular weight: 60000)

[0099] *3 TAFMER (registered trademark) XM5080 (manufactured by Mitsui Chemicals, Inc., propylene-1-butene copolymer, melting point: 160°C, MFR: 4.0 g / 10min (230°C))

[0100] *4TAFMER (registered trademark) PN0040 (manufactured by Mitsui Chemicals, Inc., propylene-1-butene copolymer, melti...