Adhesion promoter composition for polyolefinic membranes

Patent metadata

Field	Value
Publication number	US-9732250-B2
Application number	US-201314425682-A
Country	US
Kind code	B2
Filing date	Sep 4, 2013
Priority date	Sep 5, 2012
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Composition, comprising—at least one organic polymer,—at least one monomer from the group of acrylates,—at least one catalyst from the group of tertiary organic amines,—at least one solvent.

First claim

The invention claimed is:

1. A composition comprising
at least one organic polymer comprising:
a hard chlorinated polyolefin with a chlorination degree of 20-30% and a molecular weight of at least 150,000 g/mol (Poly1); or
a soft chlorinated polyolefin with a chlorination degree of 20-30% and a molecular weight of at least 100,000 g/mol (Poly2);

at least one monomer from the group of alkyl acrylate esters and alkyl methacrylate esters;
at least one catalyst from the group of tertiary organic amines; and
at least one solvent.

2. The composition of claim 1 , wherein the at least one organic polymer further comprises:
a hard polyolefin with a chlorination degree of 20-30%, a maleic acid anhydride content of 1 to 2% and a molecular weight of 60,000 g/mol (Poly3); or a soft polyolefin with a chlorination degree of 20-30%, a maleic acid anhydride content of 1 to 2% and a molecular weight of 65,000 g/mol (Poly4).

3. The composition of claim 1 , wherein the at least one catalyst from the group of tertiary organic amines comprises an aniline derivative.

4. The composition of claim 1 , wherein the at least one solvent comprises an alkyl aromatic solvent.

5. The composition of claim 1 further comprising an adhesion promoter.

6. A method for surface treatment of a polyolefinic substrate, the method comprising: applying a composition to the surface of a polyolefinic substrate, and subsequently drying the composition, wherein the composition comprises:
at least one organic polymer comprising:
a hard chlorinated polyolefin with a chlorination degree of 20-30% and a molecular weight of at least 150,000 g/mol (Poly1); or
a soft chlorinated polyolefin with a chlorination degree of 20-30% and a molecular weight of at least 100,000 g/mol (Poly2);

at least one monomer from the group of alkyl acrylate esters and alkyl methacrylate esters;
at least one catalyst from the group of tertiary organic amines; and
at least one solvent.

7. The method of claim 6 further comprising after drying, bonding the polyolefinic substrate to another substrate.

8. The method of claim 6 , wherein after the drying of the applied composition, an adhesive is applied.

9. The method of claim 6 , wherein the polyolefinic substrate is a waterproofing.

10. The composition of claim 1 , wherein the at least one monomer from the group of acrylates comprises a methyl methacrylate, butyl methacrylate, or lauryl methacrylate.

11. The composition of claim 1 , wherein the at least one catalyst from the group of tertiary organic amines comprises N,N-bis-(2-hydroxyethyl)-para-toluidine.

12. The composition of claim 1 , wherein the at least one solvent comprises xylene.

13. The composition of claim 5 , wherein the adhesion promoter comprises:
about 1 to 10 parts by weight of the at least one organic polymer;
about 3 to 20 parts by weight of the at least one monomer from the group of acrylates;
about 3 to 16 parts by weight of the at least one catalyst from the group of tertiary organic amines; and
about 54 to 93 parts by weight of the at least one solvent.

14. The composition of claim 5 , wherein the adhesion promoter comprises:
about 4 to 7 parts by weight of the at least one organic polymer;
about 10 to 15 parts by weight of the at least one monomer from the group of acrylates;
about 5 to 10 parts by weight of the at least one catalyst from the group of tertiary organic amines; and
about 68 to 87 parts by weight of the at least one solvent.

Assignees

• Sika Tech Ag

Inventors

• Jendoubi Elyes
• Haufe Markus
• Carl Wilfried

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C08J2351/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• C09D123/26

  modified by chemical after-treatment · CPC title

• C08L51/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• C08L2205/035

  containing four or more polymers in a blend · CPC title