Process for purifying a fluorinated polyether having at an end t

Details Process for purifying a fluorinated polyether having at an end t Process for purifying a fluorinated polyether having at an end t

1996-08-08

1998-08-04

Truong, Duc

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From fluorine-containing reactant

528310, 528315, 528332, 528425, 528492, 528503, 568615, 568677, 568679, C08G 7324

Patent

active

057895341

ABSTRACT:
The purification process comprises removing carboxylic acids and/or carboxylic acid salts contained as impurities in a fluorinated polyether having at at least one end thereof a terminal vinyl group linked thereto through an amide group-containing linkage by heating, in the presence of an amine compound such as triethylamine and dimethylaminotrimethylsilane, the fluorinated polyether containing said impurities or a reaction mixture obtained after the completion of reaction in a process of producing said fluorinated polyether. According to the purification process, the impurities can be easily removed from said fluorinated polyether. When the thus purified fluorinated polyether is used as a starting material for an addition type curable composition together with a SiH group-containing organosilicon compound, a liquid rubber material excellent in curability and storage stability can be obtained. Further, when the purified product is used as a starting material for hydrosilylation reaction, improvements in yield and reaction rate are expected.

REFERENCES:
Chem Abstract, vol. 122, 1995: 122:242059 "Fluorine containing organic silicon compounds" Takashi et al., p. 121.
122 : 267861 "Room temperature curable, acid-, alkali-, heat-, and solvent-resistant perfluoro polyether-polyamide-siloxane compositions"shinichi et al, p. 137.

Affiliated with

Also associated with

Rating

Process for purifying a fluorinated polyether having at an end t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for purifying a fluorinated polyether having at an end t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for purifying a fluorinated polyether having at an end t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1178296