Aldehyde scavenger and resin composition

Patent metadata

Field	Value
Publication number	US-12577387-B2
Application number	US-202117923044-A
Country	US
Kind code	B2
Filing date	May 12, 2021
Priority date	May 13, 2020
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

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

The invention claimed is:

1 . An aldehyde scavenger comprising at least one selected from the group consisting 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, 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.

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 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).

4 . The aldehyde scavenger according to claim 1 ,
wherein at least one selected from the group consisting 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).

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

6 . 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

• C08L2205/06

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

• C08L79/02

  Polyamines · CPC title

• C08L33/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• C08L33/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C08L33/26 Primary

  Homopolymers or copolymers of acrylamide or methacrylamide · CPC title