# US 10,385,202 B2 · Thermoplastic polymer composition and shaped article composed of the same

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- Number: US 10,385,202 B2
- Document ID: US10385202B2
- Status: Granted
- Kind: B2
- Application number: 12/809,462
- Filed: 2008-12-19
- Published: 2010-10-28
- Granted: 2019-08-20
- Earliest claimed: 2007-12-20
- Assignees: Kuraray Co., Ltd.
- Applicants: Nobuhiro Moriguchi; Shinichi Torigoe; Kazuki Tokuchi
- Inventors: Nobuhiro Moriguchi; Shinichi Torigoe; Kazuki Tokuchi
- Web page: https://patentgrep.com/patent/US10385202B2

## CPC

- C08L 53/02: of vinyl-aromatic monomers and conjugated dienes
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- C08L 53/025: {modified}
- C09D 153/025: {modified}
- C09J 129/14: Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
- C09K 3/10: {Materials in mouldable or extrudable form} for sealing or packing joints or covers (filling pastes C09D5/34)
- C08L 29/14: Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
- C08L 2666/24: Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
- C09K 2200/0622: Polyvinylalcohols, polyvinylacetates
- C09K 2200/0632: Polystyrenes
- Y10T 428/3163: Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
- Y10T 428/31667: Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
- Y10T 428/31688: Next to aldehyde or ketone condensation product
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided is a thermoplastic polymer composition, including a thermoplastic elastomer (A) and a polyvinyl acetal (B), wherein the thermoplastic elastomer (A) is a styrene-based thermoplastic elastomer or an olefin-based thermoplastic elastomer. Thus, a thermoplastic polymer composition is provided that has good flexibility as a thermoplastic elastomer composition, is excellent in mechanical properties and formability, and also itself has excellent adhesion to a ceramic, a metal, or a polar polymer. In addition, provided is a shaped article in which the thermoplastic polymer composition is adhered to a ceramic, a metal, or a polar polymer, in particular a shaped article adhered to a glass.

## Claims

### Claim 1

A thermoplastic polymer composition, comprising a thermoplastic elastomer (A) and a polyvinyl acetal (B) wherein the polyvinyl acetal (B) is polyvinyl butyral, wherein the thermoplastic elastomer (A) is a hydrogenation product of a block copolymer having a polymer block of an aromatic vinyl compound and a polymer block of a conjugated diene compound, wherein the block copolymer contains from 5 to 75 weight % of structural units obtained from the aromatic vinyl compound based on a total weight of the block copolymer before hydrogenation, wherein the thermoplastic elastomer (A) is at least one member selected from the group consisting of polystyrene-polyisoprene-polystyrene block copolymers, polystyrene-poly(isoprene-butadiene)-polystryene block copolymers and polystyrene-polybutadiene-polystyrene block copolymers, and wherein the polyvinyl acetal (B) is contained in an amount from 5 to 70 parts by mass in terms of 100 parts by mass of the thermoplastic elastomer (A),
wherein the thermoplastic elastomer (A) has a hydrogenation ratio of 70 mol % or more,
wherein particles of the polyvinyl acetal (B) are dispersed in a matrix of the thermoplastic elastomer (A),
wherein the thermoplastic polymer composition has a JIS-A hardness according to JIS K6253 of 93 or less.

### Claim 2 (depends on 1)

The thermoplastic polymer composition according to claim 1, wherein the polyvinyl acetal (B) has an average particle diameter of 5 μm or less.

### Claim 3 (depends on 1)

The thermoplastic polymer composition according to claim 1, wherein the polyvinyl acetal (B) is obtained by acetalizing polyvinyl alcohol having an average degree of polymerization of from 100 to 4000.

### Claim 4 (depends on 1)

The thermoplastic polymer composition according to claim 1, wherein a degree of acetalization of the polyvinyl acetal (B) is from 55 to 88 mol %.

### Claim 5 (depends on 1)

The thermoplastic polymer composition according to claim 1, wherein the thermoplastic elastomer (A) comprises both a thermoplastic elastomer (A1) not comprising a polar functional group and a thermoplastic elastomer (A2) comprising a polar functional group, and a ratio by weight of from 0.1/100 to 100/0.1.

### Claim 6 (depends on 1)

A shaped article, comprising the thermoplastic polymer composition according to claim 1.

### Claim 7 (depends on 6)

The shaped article according to claim 6, wherein the thermoplastic polymer composition is adhered to a ceramic or a metal.

### Claim 8 (depends on 7)

The shaped article according to claim 7, wherein the thermoplastic polymer composition is adhered to a glass.

### Claim 9 (depends on 7)

The shaped article according to claim 7, wherein a continuous layer of the polyvinyl acetal (B) exists at an interface between the thermoplastic polymer composition and the ceramic or the metal.

### Claim 10 (depends on 6)

The shaped article according to claim 6, wherein the thermoplastic polymer composition is adhered to a polar polymer having a functional group selected from the group consisting of amide group, ester group, carbonate group, acetal group, ether group, sulfide group, nitrile group, hydroxyl group, carbonyl group, carboxyl group, amino group, and sulfonic acid group.

### Claim 11 (depends on 10)

The shaped article according to claim 10, wherein the polar polymer is at least one selected from the group consisting of polyamide, polyester, polycarbonate, polyacetal, polyphenylene sulfide, ABS resin (acrylonitrile-butadiene-styrene copolymer), polyvinyl alcohol, ethylene-vinyl alcohol copolymer, polyvinyl acetal, polyvinyl acetate, poly(meth)acrylate, polyether, polyketone, ionomer, polyurethane, and polyurea.

### Claim 12 (depends on 1)

An adhesive, comprising the thermoplastic polymer composition according to claim 1.