公开(公告)号：US10472465B2

公开(公告)日：2019-11-12

申请号：US15359071

申请日：2016-11-22

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Kazunao Kusano ,  Kazuki Wakabayashi ,  Yoko Nakagawa ,  Yusuke Izawa ,  Yoshikazu Kanamori

IPC: C08G64/30 ,  C08G18/44 ,  C08G64/02 ,  C09D175/06 ,  C09J175/06 ,  D01F6/70 ,  D06N3/14 ,  C08G18/75 ,  C08G18/10 ,  C08G18/24

Abstract: The present invention relates to a method for producing a polycarbonate diol, comprising subjecting a compound represented by the following formula (A) containing from 0.01 to 1.0 wt % of an aldehyde derivative, a compound represented by the following formula (B), and a carbonate compound to polycondensation by a transesterification reaction in the presence of a catalyst to produce a polycarbonate diol having a number average molecular weight of 250 to 5,000: HO—(CH2)10—OH  (A) HO—R1—OH  (B) wherein in the formula (B), R1 represents a substituted or unsubstituted divalent alkylene group having a carbon number of 3 to 20, wherein the compound of the formula (A) is not included by the formula (B).

公开(公告)号：US11220572B2

公开(公告)日：2022-01-11

申请号：US15908176

申请日：2018-02-28

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Kazunao Kusano ,  Yoshikazu Kanamori ,  Yoko Nakagawa ,  Kaori Yano

IPC: C08G18/44 ,  C09D175/06 ,  C09J175/06 ,  C08G64/02 ,  C08G64/30 ,  D06N3/14 ,  C08G18/32 ,  C09D175/04 ,  C09J175/04

Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH  (A) HO—R2—OH  (B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is −30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.

公开(公告)号：US10907012B2

公开(公告)日：2021-02-02

申请号：US13652070

申请日：2012-10-15

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Haruhiko Kusaka ,  Kazuki Wakabayashi ,  Masanori Yamamoto ,  Kazunao Kusano ,  Hiroto Ito ,  Takashi Komaya ,  Teruhiko Ohara ,  Kentaro Uchino ,  Haruo Iiduka

IPC: C08G64/16 ,  C08G18/44 ,  C08G18/67 ,  C09J175/04 ,  C09D175/04 ,  C09D175/16 ,  C08G18/75 ,  C09D175/14 ,  C08G18/66 ,  C08G64/02 ,  C08F290/06 ,  C07D493/04 ,  C08G64/30 ,  B32B27/40 ,  C09J175/14 ,  C08L75/04 ,  C08F20/36

Abstract: A novel polycarbonate diol is useful as a raw material for producing a polycarbonate diol-based polyurethane with a high degree of hardness, superior abrasion resistance, and superior hydrophilicity. The polyurethane is useful in paints, coating agents, synthetic leathers, artificial leathers, and highly-functional elastomers, or the like. The polycarbonate diol is also useful for producing an active-energy radiation curable polymer composition giving a cured film having superior contamination resistance and high degree of hardness. The curable polymer composition contains a urethane(meth)acrylate oligomer obtained from the polycarbonate diol. The polycarbonate diol is obtained, for example, by reacting two specific types of diols with diester carbonate in the presence of a transesterification catalyst. The catalyst has a metal of Group 1 or 2 on the periodic table. A metal content of the transesterification catalyst is 100 weight ppm or less.

公开(公告)号：US11608405B2

公开(公告)日：2023-03-21

申请号：US16448007

申请日：2019-06-21

Applicant: Mitsubishi Chemical Corporation

Inventor： Yuta Hioki ,  Yoshikazu Kanamori ,  Kazunao Kusano ,  Kazuki Wakabayashi ,  Ryo Yamashita ,  Takayuki Yamanaka

IPC: C08G18/44 ,  C07C31/20 ,  C07C31/22 ,  C08G64/02 ,  C08L75/04 ,  C08G18/66 ,  C08G18/32 ,  C08G18/76

Abstract: Provided is a polycarbonate polyol used as a raw material of a polyurethane that has an excellent balance of flexibility, mechanical strength and solvent resistance. The polycarbonate polyol includes structural units derived from a polyhydric alcohol and has a hydroxyl value of 20 to 450 mg KOH/g. The polyhydric alcohol includes: a diol (A) containing not less than 70% by weight of a specific oxyalkylene glycol (A1); and a trihydric to hexahydric branched alcohol (B) having 3 to 12 carbon atoms. In the polycarbonate polyol, structural units derived from the branched alcohol (B) is contained in an amount of 0.005 to 5.0% by mole in the structural units derived from the polyhydric alcohol. A ratio of a structural unit (X1) represented by the following Formula (X1) in the structural units derived from the branched alcohol (B) is not higher than 50% by mole.

公开(公告)号：US20220372351A1

公开(公告)日：2022-11-24

申请号：US17876637

申请日：2022-07-29

Applicant: Mitsubishi Chemical Corporation

Inventor： Hideaki Suzuki ,  Kazunao Kusano

IPC: C09J167/02 ,  C08G63/183 ,  C08K5/01 ,  C08K5/29

Abstract: The present disclosure provides an adhesive composition that contains a polyester resin (A), wherein the polyester resin (A) contains a structural unit derived from at least one compound (a1) selected from the group consisting of a dimer acid compound and a dimer diol, and a structural unit derived from an aromatic compound (a2).

公开(公告)号：US10316130B2

公开(公告)日：2019-06-11

申请号：US14751898

申请日：2015-06-26

Applicant: MITSUBISHI CHEMICAL CORPORATION

Inventor： Kazunao Kusano ,  Yoshikazu Kanamori ,  Yoko Nakagawa ,  Kaori Yano

IPC: C08G18/32 ,  C08G18/44 ,  C08G64/02 ,  C08G64/30 ,  C09D175/04 ,  C09D175/06 ,  C09J175/04 ,  C09J175/06 ,  D06N3/14

Abstract: The present invention relates to a polycarbonate diol comprising a structural unit derived from a compound represented by the following formula (A) and a structural unit derived from a compound represented by the following formula (B), wherein the hydroxyl value is from 20 to 450 mg-KOH/g: HO—R1—OH  (A) HO—R2—OH  (B) the glass transition temperature of said polycarbonate diol as measured by a differential operating calorimeter is −30° C. or less and the average carbon number of a dihydroxy compound obtained by hydrolyzing said polycarbonate diol is from 3 to 5.5.