Modified polyolefin resin composition and method for producing the same

Patent metadata

Field	Value
Publication number	US-11518838-B2
Application number	US-201816644818-A
Country	US
Kind code	B2
Filing date	Oct 23, 2018
Priority date	Oct 25, 2017
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

An object is to provide a resin composition having excellent performance as a binder such as adhesiveness and, at the same time, retaining solution properties favorably even after a solution is stored for a long period of time. A modified polyolefin resin composition includes a modified polyolefin resin (C), in which the modified polyolefin resin (C) is a resin made by modifying a polymer (A) that is a polymer (a) of a polyolefin resin or a chlorinated polyolefin resin and an α,β-unsaturated carboxylic acid derivative having a structure derived from at least one carboxy group or a chlorinated product (b) thereof with a modification component including an alcohol (B); and a residual ratio of the structure derived from at least one carboxy group in the modified polyolefin resin (C) is 50% or more and 80% or less.

First claim

The invention claimed is:

1. A modified polyolefin resin composition comprising:
a modified polyolefin resin (C), wherein the modified polyolefin resin (C) is a resin made by modifying a polymer (A) that is a polymer (a) of a polyolefin resin or a chlorinated polyolefin resin and an α,β-unsaturated carboxylic acid derivative having a structure derived from at least one carboxy group or a chlorinated product (b) thereof with a modification component comprising an alcohol (B), and
a residual ratio of the structure derived from at least one carboxy group in the modified polyolefin resin (C) is 50% or more and 80% or less,
wherein the modification component further comprises a monomer (I) represented by formula (1):

wherein R 1 represents a hydrogen atom or a methyl group; m represents an integer of 1 to 4; R 2 represents a divalent organic group; and n represents an integer of 0 to 3, and
wherein the modified polyolefin resin (C) is modified with the monomer (I) in an amount of 2.1 mol or more and 50 mol or less relative to 1 mol of the polymer (A), and
wherein the amount of the alcohol (B) is 2 mol or more relative to 1 mol of the structure derived from at least one carboxy group contained in the polymer (A).

2. The modified polyolefin resin composition according to claim 1 ,
wherein the α,β-unsaturated carboxylic acid derivative is an α,β-unsaturated polycarboxylic acid cyclic anhydride, and
the structure derived from at least one carboxy group is a structure represented by —(C═O)—O—(C═O)—.

3. The modified polyolefin resin composition according to claim 1 ,
wherein the modification component further comprises a monomer (II) represented by formula (2):
CH 2 ═C(R 3 )COOR 4   (2)

R 3 represents a hydrogen atom or a methyl group; and R 4 represents a hydrogen atom or a group represented by —C n H 2n+1 wherein n represents an integer of 1 to 18.

4. The modified polyolefin resin composition according to claim 1 ,
wherein the polymer (A) is chlorinated.

5. The modified polyolefin resin composition according to claim 1 ,
wherein the alcohol (B) is an alcohol having a carbon atom number of 1 to 10.

6. A primer comprising the modified polyolefin resin composition according to claim 1 .

7. A paint comprising the modified polyolefin resin composition according to claim 1 .

8. An ink comprising the modified polyolefin resin composition according to claim 1 .

9. A method for producing a modified polyolefin resin composition, the method comprising:
polymerizing a polyolefin resin or a chlorinated polyolefin resin and an α,β-unsaturated carboxylic acid derivative having a structure derived from at least one carboxy group, thereby producing a polymer (a); and
modifying a polymer (A) that is the polymer (a) or a chlorinated product (b) thereof with a modification component comprising an alcohol (B) and a monomer (I), thereby producing a modified polyolefin resin composition comprising a modified polyolefin resin (C),
wherein a residual ratio of the structure derived from at least one carboxy group in the modified polyolefin resin (C) is 50% or more and 80% or less,
wherein the monomer is represented by formula (1):

wherein R 1 represents a hydrogen atom or a methyl group; m represents an integer of 1 to 4; R 2 represents a divalent organic group; and n represents an integer of 0 to 3, and
wherein the modified polyolefin resin (C) is modified with the monomer (I) in an amount of 2.1 mol or more and 50 mol or less relative to 1 mol of the polymer (A), and
wherein the amount of the alcohol (B) is 2 mol or more relative to 1 mol of the structure derived from at least one carboxy group contained in the polymer (A).

10. The method according to claim 9 ,
wherein the α,β-unsaturated carboxylic acid derivative is an α,β-unsaturated polycarboxylic acid cyclic anhydride; and
the structure derived from at least one carboxy group is a structure represented by —(C═O)—O—(C═O)—.

11. The method according to claim 9 ,
wherein the modification component further comprises a monomer (II) represented by formula (2):
CH 2 ═C(R 3 )COOR 4   (2)

wherein R 3 represents a hydrogen atom or a methyl group; and R 4 represents a hydrogen atom or a group represented by —C n H 2n+1 wherein n represents an integer of 1 to 18.

Assignees

• Jujo Paper Co Ltd

Inventors

• Kono Masaru
• Yoshimoto Takao
• Takenaka Takato
• Yada Minoru
• Komoto Naosuke

Classifications

• C09D151/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• C08F8/14

  Esterification · CPC title

• C09D5/002

  Priming paints (C09D5/08 takes precedence) · CPC title

• C09D133/14

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09D5/00

  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