Aldehyde scavenger and resin composition

Patent metadata

Field	Value
Publication number	US-2023193015-A1
Application number	US-202117923044-A
Country	US
Kind code	A1
Filing date	May 12, 2021
Priority date	May 13, 2020
Publication date	Jun 22, 2023
Grant date	—

Abstract

The present invention aims to provide an aldehyde scavenger which has excellent aldehyde scavenging properties and yields a resin composition with excellent moldability (mold fouling resistance) when added to a resin. The present invention relates to an aldehyde scavenger containing at least one of: (1) a copolymer (A) containing a (meth)acrylamide (a) and an acid group-containing unsaturated monomer (b) as constituent monomers; and (2) a mixture containing a (co)polymer (B) and a (co)polymer (C), the (co)polymer (B) containing the (meth)acrylamide (a) as a constituent monomer but not containing the acid group-containing unsaturated monomer (b) as a constituent monomer, and the (co)polymer (C) containing the acid group-containing unsaturated monomer (b) as a constituent monomer but not containing the (meth)acrylamide (a) as a constituent monomer.

First claim

1 . An aldehyde scavenger comprising at least one of:
(1) a copolymer (A) containing a (meth)acrylamide (a) and an acid group-containing unsaturated monomer (b) as constituent monomers; and (2) a mixture containing a (co)polymer (B) and a (co)polymer (C), the (co)polymer (B) containing the (meth)acrylamide (a) as a constituent monomer but not containing the acid group-containing unsaturated monomer (b) as a constituent monomer, and the (co)polymer (C) containing the acid group-containing unsaturated monomer (b) as a constituent monomer but not containing the (meth)acrylamide (a) as a constituent monomer.

2 . The aldehyde scavenger according to claim 1 ,
wherein the copolymer (A), the (co)polymer (B), and the (co)polymer (C) each have a weight average molecular weight (Mw) of 2,000 to 100,000.

3 . The aldehyde scavenger according to claim 1 ,
wherein a weight ratio [(a)/(b)] of the (meth)acrylamide (a) to the acid group-containing unsaturated monomer (b) is 40/60 to 99/1.

4 . The aldehyde scavenger according to claim 1 ,
wherein the copolymer (A) further comprises, as a constituent monomer, at least one monomer (c) selected from the group consisting of a polyoxyalkylene group-containing (meth)acrylic acid ester (c1) and an alkyl group- or hydroxyalkyl group-containing C4-C30 (meth)acrylic acid alkyl ester (c2).

5 . The aldehyde scavenger according to claim 1 ,
wherein at least one of the (co)polymer (B) and the (co)polymer (C) further comprises, as a constituent monomer, at least one monomer (c) selected from the group consisting of a polyoxyalkylene group-containing (meth)acrylic acid ester (c1) and an alkyl group- or hydroxyalkyl group-containing C4-C30 (meth)acrylic acid alkyl ester (c2).

6 . The aldehyde scavenger according to claim 1 , comprising:
a product of a neutralization of the copolymer (A) and/or the (co)polymer (C) with the base (E), with a neutralization ratio of 1 to 120%.

7 . A resin composition comprising:
the aldehyde scavenger according to claim 1 ; and at least one resin selected from the group consisting of polyester resins, polyacetal resins, polyolefin resins, phenolic resins, urethane resins, melamine resins, urea resins, and urea-melamine resins.

Assignees

• Sanyo Chemical Ind Ltd

Inventors

• Kita Ai
• Matsumoto Makoto

Classifications

• C08L33/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C08L33/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• C08L33/26 Primary

  Homopolymers or copolymers of acrylamide or methacrylamide · CPC title

• C08L79/02

  Polyamines · CPC title

• C08L2205/06

  having improved processability or containing aids for moulding methods · CPC title