Title:
ADHESIVE AND METHOD OF ADHESION
Document Type and Number:
Japanese Patent JP3513768
Kind Code:
B2
Abstract:
PURPOSE: To improve the adhesion of a polyolefin with a metal and the workability by reacting an unsaturated dicarboxylic acid with a low-molecular PP.
CONSTITUTION: A high-molecular PP with a molecular weight of 50,000 to 1,500,000 is thermally degraded at 300-450°C for 0.5-10hr in an inert gas atmosphere to obtain a low-molecular PP with a number-average molecular weight of 700-30,000. An unsaturated dicarboxylic acid is reacted with the low-molecular PP in the presence of an organic peroxide, as required, to obtain the adhesive composed of a reaction product with acid value of 20-70 and acid value ratio of 2.0 or less with respect to the acid value of acetone-insolubles. A dilute solution of the adhesive in an organic solvent is applied on the side or sides of each of two polyolefin moldings or a polyolefin molding and a metal, and the coated materials are dried, if necessary, and then fused with each other by heating.
Inventors:
Horiie, Takafumi
Imada, Yukitada
Imada, Yukitada
Application Number:
JP12572892A
Publication Date:
March 31, 2004
Filing Date:
April 17, 1992
Export Citation:
Assignee:
SANYO CHEM IND LTD
International Classes:
C09J123/26; C09J151/00; C09J151/06; (IPC1-7): C09J123/26; C09J151/06