Daikin Kogyo Co., Ltd.

Daikin Kogyo Kabushiki Kaisha

Akitoshi Iwatani

Shoshin Fukui

Atsuo Katsushima

Akira Yamada

Iwao Hisamoto

Chiaki Maeda

Takeo Saegusa

Takahisa Kato

Hiroyuki Shinkai

Masayuki Nagai

Masayuki Asaoka

Shinichi Imazu

Masaaki Iwase

Tadashi Akazawa

A fluorine-containing polyester which comprises essentially as the constituting units (a) a group of the formula: ##STR1## wherein Rf is a perfluoroalkyl group having 8 to 21 carbon atoms and n is an integer of 0 or 1 and (b) a group of the formula: ##STR2## wherein R is one of the groups represented by the formulas: ##STR3## wherein R.sub.1 to R.sub.6 is each a hydrogen atom or a lower alkyl group, R.sub.1 and R.sub.3 being optionally combined together at the terminal carbon atoms to form a cyclic ring, X is a halogen atom or a lower alkyl group and m is an integer of 0 to 4, and is useful as a water and oil-repelling agent or a non-sticking agent.

Fluorine-containing polyesters, and their production and use

A fluorine-containing copolymer which comprises essentially as the constituting units (a) a group of the formula: ##STR1## wherein Rf is a perfluoroalkyl group having 3 to 21 carbon atoms and n is an integer of 0 or 1, (b) a group of the formula: ##STR2## wherein R is a residue obtained by eliminating a group: ##STR3## from a cyclic acid anhydride and (c) a group of the formula: ##STR4## wherein R' is a hydrogen atom, an alkyl group or an aryl group and m is an integer of 2 or 3, and is useful as a water and oil-repelling agent or a non-sticking agent.

Fluorine-containing copolymers, and their production and use

A compound of the formula: ##STR1## WHEREIN Q is a hydrogen atom, --CH.sub.2 CH(OH)CH.sub.2 Rf or a hydrocarbon residue having a valence corresponding to m which may contain one or more of --O--, --COO--, --NH--, --N.dbd. and ##STR2## IN THE CHAIN, R is a hydrogen atom, a hydrocarbon residue or --CH.sub.2 CH(OH)CH.sub.2 Rf and m is an integer of not less than 1, Rf being a perfluoroalkyl group, an .omega.-hydro-perfluoroalkyl group o an .differential.-chloro-erfluoroalkylgroup having 4 to 20 carbon atoms, which is useful as an agent for rendering fibrous materials oleophobic and anti-soiling and may be prepared by reacting a perfluoroalkylpropylene oxide of the formula: ##STR3## wherein Rf is the same as defined above, with a reagent of the formula:

2-Hydroxy-1,1,2,3,3-pentahydro-perfluoroalkyl derivatives, their

A 2-hydroxy-1,1,2,3,3-pentahydroperfluoroalkyl derivative of either one of the formulae:

2-Hydroxy-1,1,2,3,3-pentahydro-perfluoroalkyl derivatives, and their

In a catalytic reduction of polyfluoroalkylpropylene epoxide to produce a polyfluoroalkyl propanol, a process which is characterized in that said catalytic reduction is conducted in the presence of a weakly basic substance having a basic dissociation constant (pKb) at 25.degree.C of at least 1.

Process for manufacturing polyfluoroalkyl propanols

A hydroxypolyfluoroalkyl-containing silane derivative having the formula ##EQU1## WHEREIN EACH OF R.sup.1 and R.sup.3 is alkyl; each of R.sup.2 and R.sup.4 is alkylene; X is alkoxyl, alkyl, hydroxy, chlorine or hydrogen and at least one of the groups represented by X is alkoxyl, hydroxy, chlorine or hydrogen; p is 0 to 2, q is 0 or 1, r is 0 to 5, y is 1 or 2 and x is 2 or 3, provided that the sum of p and qr is at least 1 and the sum of x and y is 4; z is 1 or 2 and is equal to or less than y; and Z is a group represented by ##EQU2## WHEREIN R.sup.1, R.sup.2, R.sup.3, R.sup.4, p, q and r are the same as above and each of R.sup.5 and R.sup.6 is a hydrogen or ##EQU3## and at least one of the groups represented by R.sup.5 and R.sup.6 is ##EQU4## R.sub.f being a perfluoroalkyl group: the above compound being useful as water- and oil-repellent agent.

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Suita, Japan

Akitoshi Iwatani