JPS5710627A - Preparation of polysiloxane with fractionated molecular weight - Google Patents

Preparation of polysiloxane with fractionated molecular weight

Info

Publication number
JPS5710627A
JPS5710627A JP8616580A JP8616580A JPS5710627A JP S5710627 A JPS5710627 A JP S5710627A JP 8616580 A JP8616580 A JP 8616580A JP 8616580 A JP8616580 A JP 8616580A JP S5710627 A JPS5710627 A JP S5710627A
Authority
JP
Japan
Prior art keywords
polysiloxane
preparation
molecular weight
fractionated molecular
soxhlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8616580A
Other languages
Japanese (ja)
Inventor
Nintei Sato
Shunichiro Uchimura
Asao Isobe
Daisuke Makino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP8616580A priority Critical patent/JPS5710627A/en
Publication of JPS5710627A publication Critical patent/JPS5710627A/en
Pending legal-status Critical Current

Links

Landscapes

  • Extraction Or Liquid Replacement (AREA)
  • Silicon Polymers (AREA)

Abstract

PURPOSE: To obtain the titled polysiloxane having improved heat resistance by a simple operation with a small amount of a solvent, by extracting the polysiloxane with acetone as a circulating solvent using a Soxhlet's extractor.
CONSTITUTION: A polysiloxane, preferably a ladder type organopolysiloxane shown by the formula (R is hydrocarbon, e.g., phenyl, alkyl, etc.; n is integer) is added to a Soxhlet's type extractor and extracted with acetone, to give the desired polysiloxane.
USE: An insulating material, heat-resistance coating material, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP8616580A 1980-06-24 1980-06-24 Preparation of polysiloxane with fractionated molecular weight Pending JPS5710627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8616580A JPS5710627A (en) 1980-06-24 1980-06-24 Preparation of polysiloxane with fractionated molecular weight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8616580A JPS5710627A (en) 1980-06-24 1980-06-24 Preparation of polysiloxane with fractionated molecular weight

Publications (1)

Publication Number Publication Date
JPS5710627A true JPS5710627A (en) 1982-01-20

Family

ID=13879131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8616580A Pending JPS5710627A (en) 1980-06-24 1980-06-24 Preparation of polysiloxane with fractionated molecular weight

Country Status (1)

Country Link
JP (1) JPS5710627A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62283128A (en) * 1986-06-02 1987-12-09 Oki Electric Ind Co Ltd Poly(allylsilsesquioxane) and production thereof
US5063267A (en) * 1990-11-28 1991-11-05 Dow Corning Corporation Hydrogen silsesquioxane resin fractions and their use as coating materials
US5247043A (en) * 1991-08-06 1993-09-21 Dow Corning Toray Silicone Co., Ltd. Phenylpolysilsesquioxanes and method for their preparation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62283128A (en) * 1986-06-02 1987-12-09 Oki Electric Ind Co Ltd Poly(allylsilsesquioxane) and production thereof
JPH0516457B2 (en) * 1986-06-02 1993-03-04 Oki Electric Ind Co Ltd
US5063267A (en) * 1990-11-28 1991-11-05 Dow Corning Corporation Hydrogen silsesquioxane resin fractions and their use as coating materials
US5247043A (en) * 1991-08-06 1993-09-21 Dow Corning Toray Silicone Co., Ltd. Phenylpolysilsesquioxanes and method for their preparation

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