Polyorganosiloxane production method

Patent metadata

Field	Value
Publication number	US-10059832-B2
Application number	US-201414779429-A
Country	US
Kind code	B2
Filing date	Mar 28, 2014
Priority date	Mar 29, 2013
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

Provided is a method of producing a polyorganosiloxane, including bringing a polyorganosiloxane produced by using a transition metal-based catalyst into contact with an adsorbent having an average pore diameter of 1,000 Å or less.

First claim

The invention claimed is:

1. A method of producing a polycarbonate-polyorganosiloxane copolymer, comprising:
(i) dissolving an aromatic polycarbonate oligomer and a polyorganosiloxane in a water-insoluble organic solvent, to obtain a solution, wherein the polyorganosiloxane is produced by a method comprising bringing a polyorganosiloxane produced by using a transition metal-based catalyst into contact with an adsorbent having an average pore diameter of 1,000 Å or less,
wherein, after the polyorganosiloxane has been brought into contact with the adsorbent, the polyorganosiloxane has a platinum content of 1 ppm by mass or less, and
wherein the polyorganosiloxane is represented by the following general formula (1-1):

wherein R 1 to R 4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, Y represents a single bond, or an organic residue containing an aliphatic or aromatic moiety, the organic residue being bonded to Si and O or to Si and Z, n represents an average number of repetitions, m represents 0 or 1, Z each independently represent a halogen, —R 5 OH, —R 5 COOH, —R 5 NH 2 , —R 5 NHR 6 , —COOH, or —SH, R 5 represents a linear, branched, or cyclic alkylene group, an aryl-substituted alkylene group, an aryl-substituted alkylene group which may have an alkoxy group on a ring thereof, or an arylene group, and R 6 represents an alkyl group, an alkenyl group, an aryl group, or an aralkyl group;
(ii) adding an aqueous solution of a dihydric phenol-based compound in an alkaline compound to the solution obtained in (i), to obtain a mixture; and
(iii) subjecting the mixture obtained in (ii) to an interfacial polycondensation reaction by contacting the mixture with a tertiary amine or a quaternary ammonium salt as a polymerization catalyst in the presence of a terminal stopper,
wherein the polycarbonate-polyorganosiloxane copolymer comprises a polyorganosiloxane moiety as a repeating unit having a structure represented by the following general formula (I) and a polycarbonate moiety as a repeating unit having a structure represented by the following general formula (II):

wherein R 11 to R 14 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, Y 1 represents a single bond, or an organic residue containing an aliphatic or aromatic moiety, n1 represents an average number of repetitions, R 21 and R 22 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, X represents a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorenediyl group, an arylalkylene group having 7 to 15 carbon atoms, an arylalkylidene group having 7 to 15 carbon atoms, —S—, —SO—, —SO 2 —, —O—, or —CO—, and b and c each independently represent an integer of 0 to 4.

2. The method according to claim 1 , wherein the adsorbent comprises a porous adsorbent.

3. The method according to claim 1 , wherein the adsorbent comprises at least one selected from the group consisting of activated clay, acid clay, activated carbon, a synthetic zeolite, a natural zeolite, activated alumina, silica, and a silica-magnesia-based adsorbent.

4. The method according to claim 1 , wherein R 1 to R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and Z each independently represent —R 5 OH, —R 5 COOH, —R 5 NH 2 , —R 5 NHR 6 , —COOH, or —SH.

5. The method according to claim 1 , wherein the polyorganosiloxane is represented by the following general formula (1-2) or (1-4):

wherein R 1 to R 4 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms, n represents an average number of repetitions, and a represents a positive integer.

6. The method according to claim 1 , wherein R 1 to R 4 each represent a methyl group.

Assignees

• Idemitsu Kosan Co

Inventors

• Abe Tomoko
• Ishikawa Yasuhiro

Classifications

• C08G77/34 Primary

  Purification · CPC title

• C08K2003/2227

  of aluminium · CPC title

• C08K3/36

  Silica · CPC title

• C08K3/346

  Clay · CPC title

• C08G77/448

  containing polycarbonate sequences · CPC title