Polymeric Polyoxazolines

Patent metadata

Field	Value
Publication number	US-2021277179-A1
Application number	US-202117215571-A
Country	US
Kind code	A1
Filing date	Mar 29, 2021
Priority date	Dec 15, 2017
Publication date	Sep 9, 2021
Grant date	—

Abstract

Polymeric polyoxazolines of the following structure are disclosed:

where X is the residue of a polymeric polyol after reaction with a dicarboxylic acid/anhydride; where R 5 is an organic moiety; where Y is an organic moiety containing one or more oxazoline groups; and wherein each R 10 is independently hydrogen or an organic moiety. Methods of making such polyoxazolines and using them in a coating, and packages coated therewith, are also within the scope of the present invention.

First claim

1 .- 27 . (canceled)

28 . A vehicle comprising a coating composition applied to at least a portion of a surface of the vehicle, the coating composition comprising:
(a) a polymer comprising acidic functionality; and (b) a polymeric polyoxazoline crosslinking agent having the following structure:

where X is the residue of a polymeric polyol after reaction with a dicarboxylic acid/anhydride;
where R 5 is an organic moiety; where Y is an organic moiety containing one or more oxazoline groups; and wherein each R 10 is independently hydrogen or an organic moiety.

29 . The vehicle of claim 28 , wherein the polymer comprising acidic functionality comprises a polyester polymer and/or a (meth)acrylic polymer.

30 . The vehicle of claim 28 , wherein the coating composition is an aqueous-based composition and (a) and (b) are dispersed in aqueous medium.

31 . The vehicle of claim 28 , wherein the molar ratio of polyoxazoline to carboxylic acid in the coating composition is 0.05:1 to 2:1.

32 . The vehicle of claim 28 , wherein the coating composition further comprises a colorant.

33 . The vehicle of claim 28 , wherein the coating composition is substantially free of formaldehyde.

34 . The vehicle of claim 28 , wherein the coating composition is substantially free of BPA.

35 . The vehicle of claim 28 , wherein the coating composition is a clearcoat, a pigmented basecoat, or a pigmented monocoat.

36 . A method of coating a vehicle, the method comprising applying to at least a portion of a surface of the vehicle a coating composition comprising
(a) a polymer comprising acidic functionality; and (b) a polymeric polyoxazoline crosslinking agent having the following structure:

where X is the residue of a polymeric polyol after reaction with a dicarboxylic acid/anhydride;
where R 5 is an organic moiety; where Y is an organic moiety containing one or more oxazoline groups; and wherein each R 10 is independently hydrogen or an organic moiety.

37 . The method of claim 36 , wherein the coating composition is applied by electrocoating, spraying, electrostatic spraying, dipping, rolling, and/or brushing.

38 . The method of claim 36 , wherein the polymer comprising acidic functionality comprises a polyester polymer and/or a (meth)acrylic polymer.

39 . The method of claim 36 , wherein the coating composition is an aqueous-based composition and (a) and (b) are dispersed in aqueous medium.

40 . The method of claim 36 , wherein the molar ratio of polyoxazoline to carboxylic acid in the coating composition is 0.05:1 to 2:1.

41 . The method of claim 36 , wherein the coating composition further comprises a colorant.

42 . The method of claim 36 , wherein the coating composition is substantially free of formaldehyde.

43 . The method of claim 36 , wherein the coating composition is substantially free of BPA.

44 . The method of claim 36 , wherein the coating composition is applied as a clearcoat, a pigmented basecoat, or a pigmented monocoat.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Zhou Hongying
• Simpson Dennis Allan
• Kurtz Christopher Paul
• MIZUHARA Tsukasa

Classifications

• C08G65/331 Primary

  containing oxygen {(cyclic ether compounds C08G65/26)} · CPC title

• C09D133/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• B05D1/02

  performed by spraying · CPC title

• C08G73/0233

  Polyamines derived from (poly)oxazolines, (poly)oxazines or having pendant acyl groups · CPC title

• C08G63/916 Primary

  Dicarboxylic acids and dihydroxy compounds · CPC title