公开(公告)号：US20220251266A1

公开(公告)日：2022-08-11

申请号：US17616407

申请日：2020-06-02

Applicant: ADEKA CORPORATION

Inventor： Kenji YAMAMOTO ,  Tsuyoshi HIRAMATSU ,  Shuhei IGARASHI ,  Kazuki MARUMO

IPC: C08F220/18 ,  C08K5/01

Abstract: The present invention provides an acrylate-based copolymer obtained by polymerizing constituent monomers including a polymerizable monomer (a) consisting of an alkyl acrylate-based monomer represented by the following general formula (1) in an amount of from 10 mol % to 95 mol % with respect to a total number of moles of the constituent monomers, a polymerizable monomer (b) consisting of an alkylene glycol acrylate-based monomer represented by the following general formula (2) in an amount of from 5 mol % to 50 mol % with respect to the total number of moles of the constituent monomers, and at least one kind of polymerizable monomer (c) selected from the group consisting of an aromatic vinyl-based monomer (c-1) and a short-chain alkyl acrylate-based monomer (c-2) represented by the following general formula (3) in an amount of from 0 mol % to 60 mol % with respect to the total number of moles of the constituent monomers. In the formula (1), R1 represents an alkyl group having 4 to 18 carbon atoms, and Al represents a hydrogen atom. In the formula (2), R2 represents an alkylene group having 2 to 4 carbon atoms, R3 represents a hydrogen atom or an alkyl group having 1 to 30 carbon atoms, A2 represents a hydrogen atom, and “n” represents a number from 2 to 20. In the formula (3), R4 represents an alkyl group having 1 to 3 carbon atoms, and A3 represents a hydrogen atom.

公开(公告)号：US20200347317A1

公开(公告)日：2020-11-05

申请号：US16764952

申请日：2018-11-27

Applicant: ADEKA CORPORATION

Inventor： Kenji YAMAMOTO ,  Shuhei IGARASHI ,  Ryou HANAMURA

IPC: C10M171/06 ,  C10M171/04

Abstract: A lubricant composition containing a base oil and organic fine particles substantially consisting of the three elements of carbon, hydrogen and oxygen and having a proportion of particles having a particle diameter of 10 nm to 10 μm of 90% or greater, wherein the content of the organic fine particles is 0.01 to 50 parts by mass relative to 100 parts by mass of the base oil.

公开(公告)号：US20200347316A1

公开(公告)日：2020-11-05

申请号：US16764948

申请日：2018-11-27

Applicant: ADEKA CORPORATION

Inventor： Kenji YAMAMOTO ,  Shuhei IGARASHI ,  Ryou HANAMURA

IPC: C10M145/14 ,  C10M143/10 ,  C08F220/18 ,  C08F212/08 ,  C10M135/18

Abstract: A friction inhibiting compound of the present invention is a friction inhibiting compound including a copolymer (A) that includes a polymerizable monomer (a) and a polymerizable monomer (b) as constituent monomers, wherein the polymerizable monomer (a) includes a specific alkyl acrylate or alkyl methacrylate, the polymerizable monomer (b) is at least one selected from the group consisting of specific hydroxyalkyl acrylates and hydroxyalkyl methacrylates; specific alkyl acrylates and alkyl methacrylates; and aromatic vinyl monomers having 8 to 14 carbon atoms, and a composition ratio of the polymerizable monomer (a) and polymerizable monomer (b) in the copolymer (A), represented by (a):(b), is (10 to 45):(55 to 90) in a molar ratio (provided that a total molar ratio of (a) and (b) is 100), and the weight average molecular weight of the copolymer (A) is 1,000 to 500,000.