Hot melt adhesive

Patent metadata

Field	Value
Publication number	US-10190027-B2
Application number	US-201816106846-A
Country	US
Kind code	B2
Filing date	Aug 21, 2018
Priority date	Nov 29, 2013
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

The object of the present invention is to provide a hot melt adhesive which is less likely to cause stringing and has excellent thermal stability, and further has excellent adhesion, in particular adhesion to a paper substrate. The present invention relates to a hot melt adhesive comprising: (A) a polar functional group-modified polymer, (B) a butyral resin, (C) an olefin-based polymer, and (D) a tackifier resin.

First claim

The invention claimed is:

1. A hot melt adhesive comprising:
(A) 1-15 wt % of a polar functional group-modified conjugated diene-based polymer;
(B) 10-50 wt % of a butyral resin;
(C) 5-40 wt % of an olefin-based polymer;
(D) 5-70 wt % of a tackifier resin; and
(E) 10-40 wt % of a wax.

2. The hot melt adhesive of claim 1 , wherein the polar functional group-modified conjugated diene-based polymer contains a conjugated diene compound selected from the group consisting of is 1,3-butadiene, 2-methyl-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene and 1,3-hexadiene.

3. The hot melt adhesive of claim 1 , wherein the polar functional group of the polar function group-modified conjugated diene-based polymer is selected from the group consisting of a maleic anhydride group, a carboxyl group, a maleic acid group, an amino group, an imino group, an alkoxysilyl group, a silanol group, a silyl ether group, a hydroxyl group and an epoxy group.

4. A paper product comprising the hot melt adhesive of claim 1 .

Assignees

• Henkel Ag & Co Kgaa

Inventors

• Takamori Ai

Classifications

• C09J129/14 Primary

  Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• C09J2431/00

  Presence of polyvinyl acetate · CPC title

• C09J2409/00

  Presence of diene rubber · CPC title

• C08L23/0869

  with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters · CPC title