公开(公告)号：US20230331969A1

公开(公告)日：2023-10-19

申请号：US18023339

申请日：2021-08-30

Applicant: MITSUI CHEMICALS, INC.

Inventor： Shota ISHIHARA ,  Masakazu TANAKA ,  Toyoaki SASAKI

IPC: C08L23/20 ,  C08F210/14 ,  H01G4/18

CPC classification number: C08L23/20 ,  C08F210/14 ,  H01G4/18 ,  C08L2201/08 ,  C08L2201/10 ,  C08L2203/16 ,  C08L2203/20 ,  C08L2205/025

Abstract: The present invention provides a resin composition including a 4-methyl-1-pentene copolymer (A) that satisfies particular requirements and a 4-methyl-1-pentene copolymer (B) that satisfies particular requirements. The resin composition of the present invention can provide a smooth film with a small surface roughness and can be suitably used for molded articles such as films for capacitors, while containing the 4-methyl-1-pentene copolymers and having properties such as heat resistance. A film for capacitors of the present invention has a small surface roughness and is smooth, which eliminates problems such as worsening of dielectric properties and shortening of service life.

公开(公告)号：US20210139622A1

公开(公告)日：2021-05-13

申请号：US16492125

申请日：2017-12-19

Applicant: MITSUI CHEMICALS, INC.

Inventor： Masakazu TANAKA ,  Toyoaki SASAKI ,  Tomoaki MATSUGI

IPC: C08F210/14

Abstract: A 4-methyl-1-pentene polymer (X) wherein a content of a constitutional unit derived from 4-methyl-1-pentene is 90 to 100% by mol; a content of a constitutional unit derived from at least one olefin selected from ethylene and an α-olefin, other than 4-methyl-1-pentene, having 3 to 20 carbon atoms is 0 to 10% by mol; and the 4-methyl-1-pentene polymer satisfies certain requirements (a) to (f): (a) a meso diad fraction (m) measured by 13C-NMR falling within a certain range; (b) a ratio of weight-average molecular weight Mw within a certain range; (c) a melt flow rate (MFR) within a certain range; (d) a cumulative weight fraction within a certain range; (e) a proportion of a polymer having a molecular weight of a certain range; and (f) a heat of fusion and a melting point of the 4-methyl-1-pentene polymer within certain ranges.

公开(公告)号：US20210032397A1

公开(公告)日：2021-02-04

申请号：US17045912

申请日：2019-04-09

Applicant: MITSUI CHEMICALS, INC.

Inventor： Masakazu TANAKA ,  Toyoaki SASAKI ,  Tomoaki MATSUGI ,  Sadahiko MATSUURA ,  Naoto MATSUKAWA ,  Masatoshi CHINAKA

IPC: C08F297/08

Abstract: A 4-methyl-1-pentene polymer particle (X) which satisfies the following requirements (X-a), (X-b) and (X-c): (X-a) being composed of a 4-methyl-1-pentene polymer which has a content of a constitutional unit derived from 4-methyl-1-pentene being 30.0 to 99.7% by mol, and a content of a constitutional unit derived from at least one olefin selected from ethylene and an α-olefin having 3 to 20 carbon atoms (except for 4-methyl-1-pentene) being 0.3 to 70.0% by mol; (X-b) having, when measured in a cross fractionation chromatograph apparatus (CFC) using an infrared spectrophotometer as a detector part, at least one peak A of an amount of a component eluted present in the range of 100 to 140° C., and at least one peak B of an amount of a component eluted present at lower than 100° C.; and (X-c) having a meso diad fraction (m) measured by 13C-NMR falling within the range of 95.0 to 100%.

公开(公告)号：US20190382573A1

公开(公告)日：2019-12-19

申请号：US16486780

申请日：2018-02-07

Applicant: MITSUI CHEMICALS, INC.

Inventor： Yusuke NAKAYAMA ,  Toyoaki SASAKI ,  Kenkichi YOSHIDA ,  Kazutoshi FUJIHARA

IPC: C08L23/20 ,  B29C45/00 ,  B29C45/16

Abstract: A molded product formed of a plurality of portions containing 4-methyl-1-pentene polymers in contact with each other and to provide a method for producing the molded product. A molded product according to the present invention includes a composition containing a particular 4-methyl-1-pentene (co)polymer (A) having a melting point (Tm) measured by DSC of within the range of 200 to 250° C. and a particular 4-methyl-1-pentene copolymer (B) having no observed melting point (Tm) or having a melting point (Tm) of within the range of 100 to 199° C., the melting point (Tm) being measured by DSC, wherein a content of the (co)polymer (A) is 60 to 95 parts by mass of based on a total of 100 parts by mass of the (co)polymer (A) and the copolymer (B), and a portion (2) that contains the 4-methyl-1-pentene (co)polymer (A) and is formed in contact with the portion (1).

公开(公告)号：US20240076425A1

公开(公告)日：2024-03-07

申请号：US18280163

申请日：2022-02-24

Applicant: MITSUI CHEMICALS, INC.

Inventor： Akihiro ASANO ,  Masakazu TANAKA ,  Toyoaki SASAKI ,  Yusuke MIZOBUCHI ,  Takuya IWATA

IPC: C08F10/14 ,  C08L23/20 ,  C09D123/20

CPC classification number: C08F10/14 ,  C08L23/20 ,  C09D123/20

Abstract: To provide a 4-methyl-1-pentene polymer being excellent in storage stability when dissolved in a solvent and solubility, and being excellent in at least one of heat resistance, and a coating appearance when a coating film is stretched, for example, when such a film is bended or used in a flexible application.
A 4-methyl-1-pentene polymer (A) being a copolymer of 4-methyl-1-pentene and at least one selected from linear α-olefins having 6 to 20 carbon atoms, the 4-methyl-1-pentene polymer (A) satisfying the following requirements (I) and (II):



(I) an endotherm end temperature (TmE) in a melting (endothermic) curve measured by DSC is 230° C. or lower; and
(II) an exotherm start temperature (TcS) in a crystallization (exothermic) curve measured by DSC is 210° C. or lower.

公开(公告)号：US20200071475A1

公开(公告)日：2020-03-05

申请号：US16466279

申请日：2017-12-13

Applicant: MITSUI CHEMICALS, INC.

Inventor： Masakazu TANAKA ,  Toyoaki SASAKI ,  Yasuhito TSUGANE ,  Kenkichi YOSHIDA ,  Kenjiro TAKAMINE ,  Masahiko OKAMOTO ,  Takanori TADA

IPC: C08J5/18 ,  C08L67/02 ,  C08F10/14

Abstract: A polyester sheet including a polyester (A), a 4-methyl-1-pentene polymer (B) having a specific heat of fusion and a meso diad fraction (m) of 98.5 to 100%, and a compatibilizing agent (C), wherein content proportions of the (A), (B), and (C) are 60 to 98.9 parts by mass for (A), 1 to 25 parts by mass for (B), and 0.1 to 15 parts by mass for (C), when a total content of (A), (B), and (C) is set as 100 parts by mass, and wherein (B) satisfies the requirements (a) to (d) described herein.

公开(公告)号：US20180030226A1

公开(公告)日：2018-02-01

申请号：US15553840

申请日：2016-02-17

Applicant: MITSUI CHEMICALS, INC.

Inventor： Toyoaki SASAKI ,  Kazutoshi FUJIHARA ,  Hironobu OKIMURA ,  Junji TAN

IPC: C08J5/24

CPC classification number: C08J5/24 ,  C08J5/042 ,  C08J2363/00 ,  C08J2423/06

Abstract: [Object]The invention provides fiber-reinforced composite materials having improved interlaminar fracture toughness and high heat resistance.[Solution]A prepreg includes a reinforcement fiber (A) and a resin composition (E), the resin composition (E) including 0.1 to 10 mass % of particles (D) including an ultrahigh molecular weight olefin polymer or a crosslinked product thereof and satisfying requirements (i) to (ii) below, the resin composition (E) further including a thermosetting resin (B) and a curing agent (C). (i) The intrinsic viscosity [η] of the ultrahigh molecular weight olefin polymer forming the particles, as measured in decalin solvent at 135° C., is 5 to 50 dl/g. (ii) The average particle size d50 is 3 to 200 μm.