Self-disinfecting surfaces

Patent metadata

Field	Value
Publication number	US-9803090-B2
Application number	US-201414764623-A
Country	US
Kind code	B2
Filing date	Jan 31, 2014
Priority date	Feb 1, 2013
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The invention relates to an aqueous coating composition comprising a compound having reactive groups A, and a quaternary ammonium compound according to Formula I, II or III

wherein
R 1 is an alkyl, alkenyl, alkylaryl or arylalkyl group having from 5 to 50 carbon atoms; R 2 is a C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms; R 3 and R 4 are alkylene groups having from 1 to 4 carbon atoms; R 5 and R 6 are H or C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms; R 7 is a C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms; R 8 is a C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms; R 9 is H or a methyl group; Z is a substituent containing at least one reactive group B which is capable of reacting with the reactive group A; X − is an anion; y is 0 or 1; a is 0 or 1; and the sum of y and a is 1 or 2 and m is an integer from 1 to 30, preferably between 1 and 10, or between 2 and 6 n is an integer from 0-30, preferably between 1 and 10, or 2 and 6 T is a monomer unit; U is a monomer unit; V is a C 1 -C 100 hydrocarbyl group, optionally containing hetero atoms; d is an integer between 1 and 5, preferably 1; e is an integer between 1 and 1000, preferably between 5 and 100; g is an integer between 1 and 100, preferably between 2 and 10; h is an integer between 1 and 5, preferably 2 or 3.

First claim

The invention claimed is:

1. A process for forming a coating having antimicrobial properties on a substrate comprising the steps of:
a. applying a coating composition comprising a quaternary ammonium compound having an alkoxylated substituent having a reactive hydroxyl group according to formula (Ia), (II), or (III) to a substrate, and
b. curing the coating composition to obtain a cured coating,
wherein the reactive hydroxyl group of the alkoxylated substituent has reacted within the cured coating,

wherein:
R 1 is an alkyl, alkenyl, alkylaryl or arylalkyl group having from 5 to 50 carbon atoms;
R 2 is a C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms;
R 3 is a C 1 -C 4 alkylene group;
R 4 is a C 1 -C 4 alkylene group;
R 5 and R 6 are H or C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms;
R 7 is a C 1 -C 100 hydrocarbyl group, optionally containing heteroatoms;
R 9 is H or methyl;
Z is OH;
X − is an anion;
m is an integer from 1 to 30;
n is an integer from 1 to 30; and
T is a monomer unit;
U is a monomer unit;
V is a C 1 -C 100 hydrocarbyl group, optionally containing hetero atoms;
d is an integer between 1 and 5;
e is an integer between 1 and 1000;
g is an integer between 1 and 100;
h is an integer between 1 and 5.

2. The process according to claim 1 , wherein R 9 is H.

3. The process according to claim 1 , wherein R 1 is a linear alkyl group having from 10 to 15 carbon atoms.

4. The process according to claim 1 , wherein the coating composition has a low anti-microbial activity, wherein the low anti-microbial activity is defined as less than 20% inhibition of bacterial growth of pseudomonas aeruginosa, according to ISO/FDIS 20776-1 (2006).

5. The process according to claim 1 , wherein the cured coating has a surface charge above 1×10 15 /cm 2 .

Assignees

• Croda Int Plc

Inventors

• Mahmoud Hossein

Classifications

• Y10T428/31551

  Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.] · CPC title

• C09D5/02

  Emulsion paints {including aerosols} · CPC title

• A01N33/12

  Quaternary ammonium compounds · CPC title

• C09D5/14 Primary

  Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence) · CPC title

• A01N25/10

  Macromolecular compounds · CPC title