Ethoxylate isocyanate compound and its use as a emulsifier

Patent metadata

Field	Value
Publication number	US-9771318-B2
Application number	US-201314436993-A
Country	US
Kind code	B2
Filing date	Oct 28, 2013
Priority date	Oct 29, 2012
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

Provided is a composition comprising one or more compound having the structure of formula II:

wherein
A is a residue of a polyisocyanate, L is a linking group formed by a reaction of an isocyanate group with an isocyanate-reactive group, n is 5 to 25, m is 0 to 100, and Z is methyl or ethyl or propyl, and

wherein the ratio of the sum of the moles of isocyanate groups plus the moles of said L groups to the moles of said Z groups is 2:1 to 30:1.

Also provided is an emulsion in which the particles comprise such a composition and further comprise one or more water-insoluble compound that does not have the structure A-NCO.

First claim

The invention claimed is:

1. An emulsion comprising particles suspended in an aqueous medium, wherein said particles comprise
(a) one or more compound having structure A-NCO;
(b) one or more compound having the structure of formula II:

 wherein A is the same as in compound (a), and
(c) one or more water-insoluble compound
that is different from compound (b);
that does not have the structure A-NCO, wherein A is the same as in formula II; and
that is selected from the group consisting of polyepoxy compounds and aromatic polyisocyanates;

wherein
A is a residue of a polyisocyanate,
L is a linking group formed by a reaction of an isocyanate group with an isocyanate-reactive group,
n is 5 to 25,
m is 0 to 100, and
Z is methyl or ethyl or propyl, and

wherein the ratio of the sum of the moles of isocyanate groups on said compound (a) plus the moles of isocyanate groups on said compound (b) plus the moles of said L groups to the moles of said Z groups is 5:1 to 30:1.

2. The emulsion of claim 1 , wherein m is zero.

3. The emulsion of claim 2 , wherein A is the residue of a monomer of a diisocyanate, the residue of a dimer of a diisocyanate, or the residue of a trimer of a diisocyanate.

4. The emulsion of claim 3 , wherein A is the residue of a trimer of a diisocyanate.

5. The emulsion of claim 4 wherein A is a residue of a trimer of hexane diisocyanate.

6. The emulsion of claim 4 wherein n is 10 to 14.

7. The emulsion of claim 1 wherein said water-insoluble compound (c) is an aromatic polyisocyanate.

8. The emulsion of claim 2 , wherein A is the residue of a monomer of an aliphatic diisocyanate, the residue of a dimer of an aliphatic diisocyanate, or the residue of a trimer of an aliphatic diisocyanate.

9. The emulsion of claim 3 , wherein A is the residue of a trimer of an aliphatic diisocyanate.

Assignees

• Dow Global Technologies Llc
• Rohm & Haas

Inventors

• Chen Yongchun
• Zhang Shiling
• Yuan Ling
• Hou Guoling

Classifications

• C08G18/283

  Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds · CPC title

• C07C271/20 Primary

  to carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being part of nitro or nitroso groups · CPC title

• B01F17/005

  Operations & Transport · mapped topic

• C08G18/792 Primary

  formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates · CPC title

• C08G18/706 Primary

  the liquid medium being water · CPC title