US 12,312,459 B2Granted

Aqueous resin composition

AssigneeTOYOBO MC Corporation

InventorsKeitaro Miyazaki, Kenji Kashihara

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Abstract

This invention provides an aqueous resin composition mixture of polyolefin and acrylic for paints, inks, adhesives, sealing agents, or primers, the aqueous resin composition exhibiting high peel strength even when baked at 80° C. on polyolefin substrates, and maintaining adhesion although an acrylic component is contained. Provided is an aqueous resin composition comprising an acid-modified polyolefin resin (A) and a (meth)acrylic acid ester copolymer (B), wherein the acid-modified polyolefin resin (A) contains an unsaturated carboxylic acid or an anhydride thereof in an amount of 0.5 to 10 mass %, and wherein the (meth)acrylic acid ester copolymer (B) contains as copolymerization components a (meth)acrylic acid ester (B1), whose ester moiety is a hydrocarbon group with 12 or more carbon atoms, and a (meth)acrylic acid ester (B2), whose ester moiety is a hydrocarbon group with 11 or less carbon atoms.

Claims13

Dependent claims

An aqueous resin composition comprising an acid-modified polyolefin resin (A) and a (meth)acrylic acid ester copolymer (B),

wherein the acid-modified polyolefin resin (A) contains an unsaturated carboxylic acid or an anhydride thereof in an amount of 0.5 to 10 mass %, and wherein the (meth)acrylic acid ester copolymer (B) contains as copolymerization components a (meth)acrylic acid ester (B1), whose ester moiety is a hydrocarbon group with 12 or more carbon atoms, and a (meth)acrylic acid ester (B2), whose ester moiety is a hydrocarbon group with 11 or less carbon atoms,
wherein the content of the (meth)acrylic acid ester copolymer (B) is 80 to 250 parts by mass per 100 parts by mass of the acid-modified polyolefin resin (A),
wherein the (meth)acrylic acid ester copolymer (B) contains the (meth)acrylic acid ester (B1), whose ester moiety is a hydrocarbon group with 12 or more carbon atoms, and the (meth)acrylic acid ester (B2), whose ester moiety is a hydrocarbon group with 11 or less carbon atoms, in a mass ratio of 70/30 to 20/80,
wherein the (meth)acrylic acid ester copolymer (B) further contains a polar-group-containing monomer (B3), and the polar-group-containing monomer (B3) is at least one selected from an acrylic acid ester whose ester moiety contains a polar group, and an acrylamide compound, and
wherein an amount of the polar-group-containing monomer (B3) is 6 to 40 mass % based on the (meth)acrylic acid ester copolymer (B).

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/602,565Filed 26 Mar 2020
Priority: JP 2019-07538511 Apr 2019
Published: US 2022/0195168 A123 Jun 2022
Granted: 27 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

C08L 23/26
Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of…:…
C09D 5/002
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced ; Filling pastes: priming…
C08F 255/02
Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00: on to polymers of olefins…
C08F 255/10
On to polymers of olefins having four or more carbon atoms: on to butene polymers