摘要:
An extremely reactive and highly copolymerizable hexafluoropropylene oxide oligoether derivative, to give bi- or ter-polymers with fluoroolefins and perfluoroalkyl vinyl ethers, which is represented by general formula: ##STR1## wherein X is a fluorine atom or trifluoromethyl group; and n is an integer of 2-5.
摘要:
The present compound is a novel perfluoropolyether represented by the following general formula: ##STR1## wherein m is an integer of 1 to 3 and n is an integer of 2 to 6. This compound is quite useful as an inert liquid used as a heat transfer mediums in the filed of electronic materials.
摘要:
A curable silicone composition comprising:(A) an alkenyl group-containing organopolysiloxane containing silicon-bonded alkenyl groups and a silicon-bonded fluorine-containing substituent having the general formula (1):Rf--O--Y-- (1) wherein Rf is a perfluoroalkenyl group having 5 to 10 carbon atoms, and Y represents a divalent organic group,(B) an organohydrogenpolysiloxane, and(C) a catalyst for addition reaction between components (A) and (B). This composition can form a cured coating which adheres firmly to various substrates and has good release properties, stability in the release properties, water- and oil-repellency, and solvent resistance. The coating exhibits good release properties even against pressure sensitive adhesives comprising a dimetylpolysiloxane.
摘要:
A novel fluorinated organosilicon compound, exhibiting excellent solvent resistance, chemical resistance and mold release, which is represented by general formula (1): ##STR1## wherein Rf is a divalent group represented by general formula (2): ##STR2## wherein Y is a fluorine atom or CF.sub.3 group; l is an integer of 0-8; k and m are integers of 0-4; j and n are integers of 0 or 1; except when j=k=l=m=n=0.
摘要翻译:由通式(1)表示的具有优异的耐溶剂性,耐化学性和脱模性的新型含氟有机硅化合物:其中Rf是由通式(2)表示的二价基团: (2)其中Y是氟原子或CF 3基团; l是0-8的整数; k和m是0-4的整数; j和n是0或1的整数; 除了当j = k = l = m = n = 0时。
摘要:
A system for moving a television set has a carrier slidably mounted in a casing. The television set is pivotally mounted in the carrier at a front portion of the carrier. A carrier driving motor and a television set rotating motor are provided. A memory is provided for storing positions of the carrier and an angular position of the television set. A control unit is provided for controlling the carrier driving motor and the television set rotating motor in accordance with the positions stored in the memory for moving the carrier between a forward position and a backward position in the casing and for rotating the television set between a downward position and a standing position. Thus the television set is moved between a retracted position in the casing and the standing position outside the casing.
摘要:
A purification method of a fluorine-containing alkylethylene comprises reacting the fluorine-containing alkylethylene with powdered metallic zinc in the presence of an aqueous acetic acid solution. By this method, fluorine-containing alkyl iodide and fluorine-containing alkylethyl iodide, contained as impurities in the fluorine-containing alkylethylene, can be removed effectively, for example, to a level of 1 ppm or below.
摘要:
Fluorinated cyclic organic silicon compounds of the general formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are independently selected from alkyl groups having 1 to 6 carbon atoms and n is an integer of from 1 to 6 are novel and susceptible to ring-opening polymerization to form chain siloxane polymers having improved properties. The cyclic compounds are produced by reacting disiloxane diols with fluorinated organic silicon compounds in the presence of amine catalysts.