Structure adhesive composition exhibiting favorable thread breakage and capable of stitch coating

Patent metadata

Field	Value
Publication number	US-11618839-B2
Application number	US-201716315788-A
Country	US
Kind code	B2
Filing date	Jul 7, 2017
Priority date	Jul 8, 2016
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

Provided are: a structure adhesive composition which exhibits favorable thread breakage and improves shower resistance, and prevents stringiness when stitch-coating is performed; a method for producing a vehicle structure using the same; and a vehicle structure. A structure adhesive composition exhibiting favorable thread breakage, the structure adhesive composition being a structure adhesive composition containing no liquid rubber component,the structure adhesive composition contains:(A) an epoxy resin in which rubber particles are dispersed as primary particles; and(B) an epoxy resin latent curing agent;a compounded proportion of the rubber particles in the structure adhesive composition is from 10 to 45 mass %; anda viscosity at 50° C. of the structure adhesive composition is from 190 to 380 (Pa·s) when a shearing speed is 5 (sec−1) and is from 1 to 30 (Pa·s) when the shearing speed is 200 (sec−1).

First claim

The invention claimed is:

1. A method for producing a vehicle structure, the method comprising:
stitch-coating a structure adhesive composition containing no liquid rubber component onto an adherend to produce the vehicle structure,
wherein the adherend is heated at 40 to 60° C., and
wherein the structure adhesive composition comprises:
(A) an epoxy resin in which rubber particles are dispersed as primary particles; and
(B) an epoxy resin latent curing agent;
wherein a compounded proportion of the rubber particles in the structure adhesive composition is from 10 to 45 mass %; and
wherein a viscosity at 50° C. of the structure adhesive composition is from 190 to 380 (Pa·s) when a shearing speed is 5 (sec −1 ) and is from 1 to 30 (Pa·s) when the shearing speed is 200 (sec −1 ).

Assignees

• Cemedine Co Ltd
• Honda Motor Co Ltd

Inventors

• Makino Daisuke
• Suzuki Atsuhiko
• Murachi Yuusuke
• Ando Katsutoshi
• Oda Koji

Classifications

• C08G59/4021

  Ureas; Thioureas; Guanidines; Dicyandiamides · CPC title

• C09J163/00 Primary

  Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins · CPC title

• B65D65/00

  Wrappers or flexible covers; Packaging materials of special type or form (wrappers or envelopes with shock-absorbing properties B65D81/03) · CPC title

• C09J2463/00

  Presence of epoxy resin · CPC title

• C09J5/06

  involving heating of the applied adhesive · CPC title