Thixotropy-increasing additive and composition containing said additive

Patent metadata

Field	Value
Publication number	US-9822234-B2
Application number	US-201414773606-A
Country	US
Kind code	B2
Filing date	Mar 11, 2014
Priority date	Mar 11, 2013
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

The invention relates to a use of at least one condensation product (A) in the form of the free compound or in the form of a salt of at least one acid as a thixotropy-increasing additive, which condensation product can be obtained by reacting at least one polymerized fatty acid or at least one reaction product (U) of at least two polymerized fatty acids and at least one polyamine having at least two primary amino groups as component (a1) with at least one polyalkylene polyamine, which is capable of forming at least one imidazoline and/or tetrahydropyrimidine unit and which has at least two primary amino groups or at least one primary and at least one secondary amino group, a composition containing at least one such condensation product (A) and at least one thixotropic agent (B), and a use of said composition, which additionally comprises at least one binder (C), as an adhesive, sealant, paint, coating agent, adhesive resin, casting resin, artificial marble, floor covering, polymer concrete, or fiber composite material.

First claim

The invention claimed is:

1. A process comprising incorporating a thixotropy-increasing additive in a composition, wherein the thixotropy-increasing additive is at least one condensation product (A) in the form of a free compound or in the form of a salt of at least one acid, the at least one condensation product (A) obtained by reaction of (a1) with (a2);
wherein (a2) is at least one polyalkylenepolyamine which is capable of forming at least one imidazoline and/or tetrahydropyrimidine unit and which has at least two primary amino groups or at least one primary and at least one secondary amino group; and
wherein (a1) is selected from the group consisting of: a mixture of polymerized fatty acids comprising, based on 100 wt % of the mixture, at least 70 wt % and less than 100 wt % of at least one trimerized fatty acid and greater than 0 wt % and not more than 30 wt % of at least one dimerized fatty acid; a mixture of polymerized fatty acids comprising, based on 100 wt % of the mixture, at least 70 wt % and less than 100 wt % of at least one dimerized fatty acid and greater than 0 wt % and not more than 30 wt % of at least one trimerized fatty acid; and a reaction product (U) of at least two polymerized fatty acids selected from the group consisting of dimerized fatty acids, trimerized fatty acids and mixtures thereof, and at least one polyamine having at least two primary amino groups.

2. The process as claimed in claim 1 , characterized in that the at least one condensation product (A) has a tertiary nitrogen content of from 0.5 to 20 wt %, based on the total weight of the at least one condensation product (A).

3. The process as claimed in claim 1 , characterized in that the at least one condensation product (A) has an amine number in the range from 200 to 1000.

4. The process as claimed in claim 1 , characterized in that the at least one condensation product (A) is prepared using at least 0.9 mol of (a2) per carboxylic acid group of (a1).

5. The process as claimed in claim 1 , characterized in that (a1) is prepared using at least one at least monounsaturated aliphatic C 16 -C 20 monocarboxylic acid.

6. The process as claimed in claim 1 , characterized in that (a2) is a polyalkylenepolyamine of the general formula (I)

in which
m is 2 or 3,
n is 0, 1, 2, 3, or 4,
p is 1, 2, 3, 4, or 5, and
X is H if n is 0 or
X is NH 2 or OH if n is 1, 2, 3, or 4.

7. The process as claimed in claim 6 , characterized in that the at least one condensation product (A) contains at least one imidazoline and/or tetrahydropyrimidine unit.

8. A composition comprising
(A) a thixotropy-increasing additive, which is at least one condensation product in the form of a free compound or in the form of a salt of at least one acid, the at least one condensation product obtained by reaction of (a1) with (a2);
(B) at least one thixotropic agent;
(C) at least one binder; and
(D) optionally at least one curing agent;
wherein (a1) is at least one polymerized fatty acid or at least one reaction product (U) of at least two polymerized fatty acids and at least one polyamine having at least two primary amino groups;
wherein (a2) is at least one polyalkylenepolyamine which is capable of forming at least one imidazoline and/or tetrahydropyrimidine unit and which has at least two primary amino groups or at least one primary and at least one secondary amino group;
wherein (B) is present in an amount of from 0.5 to 25 wt %, based on the total weight of (C); and
wherein (A) is present in an amount of from 10 to 100 wt %, based on the total weight of (B).

9. The composition as claimed in claim 8 , characterized in that the thixotropic agent (B) is selected from the group consisting of non-organically modified fumed silica, hydrophobically modified fumed silica, and mixtures thereof.

10. The composition as claimed in claim 8 , characterized in that the binder (C) is selected from the group consisting of epoxide-based resins, polyester-based resins, vinyl ester-based resins, poly(meth)acrylate-based resins, resins based on at least one (meth)acrylate copolymer, and polyurethane-based resins.

11. An adhesive, sealant, paint, coating material, adhesive resin, casting resin, synthetic marble, floor covering, polymer concrete, or fiber composite material, comprising the composition of claim 8 .

Assignees

• Byk Chemie Gmbh

Inventors

• Biecker Christian
• Kockoth Sascha
• Piestert Frederik
• Pritschins Wolfgang
• Omeis Jürgen
• Besten Eva
• Orlowski Angelika

Classifications

• C09D5/04 Primary

  Thixotropic paints · CPC title

• C08L33/04

  Homopolymers or copolymers of esters {(C08L43/04 takes precedence)} · CPC title

• C09D177/08

  from polyamines and polymerised unsaturated fatty acids · CPC title

• C08L33/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C08K3/36 Primary

  Silica · CPC title