Rubber-based adhesive composition and rubber-based adhesive tape for automobile using the same

Patent metadata

Field	Value
Publication number	US-9988561-B2
Application number	US-201515023657-A
Country	US
Kind code	B2
Filing date	Feb 11, 2015
Priority date	Feb 20, 2014
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

The present invention relates to a rubber-based adhesive composition containing: a styrene-butadiene-styrene (SBS) rubber; a hardener; and an adhesion enhancer, the adhesion enhancer being contained in 50 to 100 parts by weight based on 100 parts by weight of the styrene-butadiene-styrene (SBS) rubber, and to a rubber-based adhesive tape for an automobile using the same.

First claim

The invention claimed is:

1. A rubber-based layer prepared by hardening a rubber-based adhesive composition, wherein the rubber-based adhesive composition consists of:
a styrene-butadiene-styrene (SBS) rubber;
a hardener;
an adhesion enhancer;
an antifoaming agent, and
optionally further consisting of at least one selected from the group consisting of an ultra-violet (UV) stabilizer, a photoinitiator, a thermal initiator, an antioxidant, and a filler,
wherein the adhesion enhancer is a hydrogenated ring-type olefin-based resin,
wherein an amount of the adhesion enhancer ranges from 50 parts to 80 parts by weight based on 100 parts by weight of the SBS rubber,
wherein an amount of the SBS rubber ranges from 10 to 30 parts by weight based on 100 parts by weight of the rubber-adhesive composition,
wherein an amount of the adhesion enhancer ranges from 5 to 15 parts by weight based on 100 parts by weight of the rubber-adhesive composition,
wherein a styrene amount of the SBS rubber ranges from 20 wt % to 30 wt %, and wherein a hardening degree (Gel amount) in the rubber-based adhesive layer ranges from 30% to 50%.

2. The rubber-based adhesive layer of claim 1 , wherein the hardener is at least one selected from the group consisting of 1,6-hexanediol diacrylate, dipentaerythritol hexaacrylate, tetramethylolmethane tetraacrylate, tetramethylolmethane triacrylate, trimethylolpropane triacrylate, 1,6-bis(3-acryloyloxy-2-hydroxypropyloxy)hexane, polyethylene glycol diacrylate, pentaerythritol triacrylate, and a hexamethylene diisocyanate urethane prepolymer.

3. The rubber-based adhesive layer of claim 1 , wherein a softening point of the adhesion enhancer is 90° C. or higher.

4. A rubber-based adhesive tape for an automobile, the tape comprising
an acryl foam layer; and
a rubber-based adhesive layer claim 1 , wherein the rubber-based adhesive layer is formed on both surfaces of the acryl foam layer.

Assignees

• Lg Chemical Ltd

Inventors

• Jang Ae-Jung
• Kim Jang-Soon

Classifications

• C09J7/26 Primary

  Porous or cellular plastics · CPC title

• C09J7/21

  Paper; Textile fabrics · CPC title

• C09J7/30

  characterised by the adhesive composition · CPC title

• C09J109/06 Primary

  Copolymers with styrene · CPC title

• C09J153/02

  Vinyl aromatic monomers and conjugated dienes · CPC title