METHOD OF PRODUCING ORGANOOXY GROUP-TERMINATED ORGANOPOLYSILOXANE

Title:

METHOD OF PRODUCING ORGANOOXY GROUP-TERMINATED ORGANOPOLYSILOXANE

Document Type and Number:

Japanese Patent JP2001139689

Kind Code:

A

Abstract:

To provide a method which can produce organooxyterminated organopolysiloxanes at a nearly constant terminal blocking ratio with a terminal blocking ratio of about 85-99% within about one hour.

The method of producing organooxy-terminated organopolysiloxanes represented by formula (A) comprises reacting (1) an organopolysiloxane represented by the formula: HO(R2SiO)nH (wherein R is a monovelent hydrocarbon group; and n is an integer when the viscosity at 25°C comes to 10-100,000 cSt) with (2) an organooxysilane represented by the formula: (R2O)4-a-Si-(R1)a (wherein a is 0, 1 or 2; R1 is a 1-18C monovalent hydrocarbon group; and R2 is a 1-18C organic group) or its partial hydrolyzate in the presence of (3) a tetraalkoxytitanium represented by the formula: Ti(OR3)4 (wherein R3 is an alkyl group).

More Like This:

JPH0826222	[Title of Invention] High Withstand Voltage Silicone Rubber Composition
JP5290196	Silica masterbatch
JP2001348318	SUNSCREEN PREPARATION INCLUDING 4,4'-DIARYLBUTADIENE AS INDISPENSABLE LIGHT STABLE UV FILTER IN COSMETIC PREPARATION AND MEDICAL PREPARATION

Inventors:

MIYAKE MASATOSHI
MATSUI TOMONAMI
KIMURA KENICHI
FUJIKI HIRONAO

Application Number:

JP32741599A

Publication Date:

May 22, 2001

Filing Date:

November 17, 1999

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SHINETSU CHEMICAL CO

International Classes:

C08L83/07; C08G77/08; C08G77/18; (IPC1-7): C08G77/18

Domestic Patent References:

JPS5636521A	1981-04-09
JPH04227731A	1992-08-17
JPH08143674A	1996-06-04
JPS6393652A	1988-04-23
JPS61127718A	1986-06-16
JPS58154766A	1983-09-14
JPS59207922A	1984-11-26

Attorney, Agent or Firm:

Takashi Kojima (1 person outside)

Previous Patent: METHOD OF PRODUCING OLIGOSILOXANE

Next Patent: METHOD FOR PREPARING ALDEHYDES USING TRIVALENT PHOSPHORUS-CONTAINING POLYMER CATALYST AND NEW PHOSPH...