# US 2019/0169412 A1 · Thermoplastic elastomer composition and glass run

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- Number: US 2019/0169412 A1
- Document ID: US20190169412A1
- Status: Published application
- Kind: A1
- Application number: 15/895,013
- Filed: 2018-02-13
- Published: 2019-06-06
- Earliest claimed: 2017-03-30
- Assignees: Toyoda Gosei Co., Ltd.
- Applicants: Toyoda Gosei Co., Ltd.
- Inventors: Atsuko SATO; Yasuhiro YAMAGUCHI; Hidekazu KURIMOTO
- Web page: https://patentgrep.com/patent/US20190169412A1

## CPC

- C08L 23/16: Ethylene-propylene or ethylene-propylene-diene copolymers
- B60J 10/15: characterised by the material
- B60J 10/21: having corner parts or bends
- B60J 10/76: for window sashes; for glass run channels
- C08L 23/14: Copolymers of propene (C08L23/16 takes precedence)
- B60J 10/27: having projections, grooves or channels in the longitudinal direction (for separately inserted fastening means, e.g. beads or strips, B60J10/36)
- C08L 2205/03: containing three or more polymers in a blend
- C08L 2207/04: Thermoplastic elastomer
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05)

## Abstract

A thermoplastic elastomer composition contains 22 to 50 parts by mass of a crosslinked ethylene/propylene/non-conjugated diene copolymer (A), 25 to 66 parts by mass of a 4-methyl-1-pentene/propylene copolymer (B), and 13 to 30 parts by mass of polypropylene (C), based on 100 parts by mass of a total of (A), (B), and (C).

## Claims

### Claim 1

A thermoplastic elastomer composition comprising: 22 to 50 parts by mass of a crosslinked ethylene/propylene/non-conjugated diene copolymer (A); 25 to 66 parts by mass of a 4-methyl-1-pentene/propylene copolymer (B); and 13 to 30 parts by mass of polypropylene (C), based on 100 parts by mass of a total of (A), (B), and (C).

### Claim 2 (depends on 1)

The thermoplastic elastomer composition according to claim 1, wherein the 4-methyl-1-pentene/propylene copolymer (B) contains a 4-methyl-1-pentene component and a propylene component in a ratio of 65:35 to 80:20.

### Claim 3 (depends on 1)

The thermoplastic elastomer composition according to claim 1, further comprising 30 to 60 parts by mass of oil (D) and 10 to 20 parts by mass of a filler (E).

### Claim 4 (depends on 2)

The thermoplastic elastomer composition according to claim 2, further comprising 30 to 60 parts by mass of oil (D) and 10 to 20 parts by mass of a filler (E).

### Claim 5 (depends on 1)

A glass run comprising at least a seal lip made of the thermoplastic elastomer composition according to claim 1.

### Claim 6 (depends on 1)

A glass run comprising an extrusion-molded part and a die-molded part die-connected to the extrusion-molded part, wherein the extrusion-molded part and the die-molded part are made of the thermoplastic elastomer composition according to claim 1.