Markers for aqueous compositions

Patent metadata

Field	Value
Publication number	US-10414899-B2
Application number	US-201715788848-A
Country	US
Kind code	B2
Filing date	Oct 20, 2017
Priority date	Nov 30, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

The present invention provides aqueous polymer compositions containing one or more, or, preferably, two or more triphenylmethyl alkyl aryl ether markers having a formula (Ph 3 C) m Ar(OR) n , wherein Ph is a phenyl group, Ar is an aromatic ring containing group having from six to twenty carbon atoms, R is a C 1 -C 18 alkyl group, m is an integer of from 1 to 2, and n is an integer of from 1 to 4. The markers are readily detectable, such as by mass spectroscopy, upon solvent extraction and separation from the aqueous polymer compositions, or from dried or cured coatings, film or layers thereof.

First claim

We claim:

1. An aqueous composition comprising (i) one or more aqueous polymers, and (ii) from 2 to 100 ppm of one or more compounds selected from a ethers having a formula (Ph3C)mAr(OR)n, wherein Ph is a phenyl group, Ar is an aromatic ring containing group having from six to twenty carbon atoms, R is a C1-C18 alkyl group, m is an integer of from 1 to 2, and n is an integer of from 1 to 4.

2. The composition as claimed in claim 1 , wherein the (i) one or more aqueous polymers is chosen from vinyl or acrylic emulsion polymers, polyurethane dispersions and aqueous solution polymers.

3. The composition as claimed in claim 1 , wherein the amount of the (ii) one or more compounds selected from ethers having a formula (Ph3C)mAr(OR)n ranges from 5 to 50 ppm.

4. The composition as claimed in claim 1 , wherein the composition comprises (ii) two compounds selected from ethers having the formula (Ph3C)mAr(OR)n in a defined ratio to one another.

5. The composition as claimed in claim 1 , wherein at least one of the (ii) one or more compounds selected from ethers having a formula (Ph3C)mAr(OR)n, wherein R is a C1-C12 alkyl group and Ar is an aromatic ring of six to twelve carbon atoms.

6. The composition as claimed in claim 1 , wherein at least one of the (ii) one or more compounds selected from ethers having a formula (Ph3C)mAr(OR)n, wherein n is an integer of from 1 to 2.

7. The composition as claimed in claim 1 , having a pH of from 3 to 12.

8. The composition as claimed in claim 1 , further comprising one or more pigments, extenders and/or fillers.

9. The composition as claimed in claim 1 , wherein the (i) one or more aqueous polymer is a vinyl or acrylic emulsion polymer which is an anionically stabilized emulsion polymer and, wherein the composition further comprises one or more polyamine and one or more volatile base.

10. A method of detecting a marker of (ii) one or more ether compounds having a formula (Ph3C)mAr(OR)n, wherein Ph is a phenyl group, Ar is an aromatic ring containing group having from six to twenty carbon atoms, R is a C1-C18 alkyl group, m is an integer of from 1 to 2, and n is an integer of from 1 to 4 in an aqueous composition of (i) one or more aqueous polymers, or a dried or cured film, coating or layer formed therefrom, the method comprising:
extracting the one or more ether compounds from the aqueous composition or the dried or cured film, coating or layer formed therefrom using a solvent to form a marker extract;
separating from the marker extract the (ii) one or more ether compounds by chromatographic separation; and,
detecting the (ii) one or more ether compounds in the marker extract.

Assignees

• Rohm & Haas
• Dow Global Technologies Llc

Inventors

• Asif Zahid
• Fu Zhenwen
• Greyson Eric C
• Yang Peilin

Classifications

• C09D5/00 Primary

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C08K5/06 Primary

  Ethers; Acetals; Ketals; Ortho-esters · CPC title

• C09D133/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• G01N30/00

  Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography {or field flow fractionation} (G01N3/00, G01N5/00, G01N7/00, G01N9/00, G01N11/00, G01N13/00, G01N15/00, G01N17/00, G01N19/00, G01N21/00, G01N22/00, G01N23/00, G01N24/00, G01N25/00, G01N27/00, G01N29/00 take precedence) · CPC title

• C09D5/004

  Reflecting paints; Signal paints · CPC title