摘要:
A polysilethylenesiloxane having the following formula: ##STR1## wherein R.sup.1 and R.sup.2 are each a methyl group or a perfluoroalkyl group. The polysilethylenesiloxane has excellent resistance to acid, alkali, etc., and are curable to produce rubber products having excellent mechanical strength.
摘要:
An eyeglass member, typically a nose pad or a temple end piece, which maintains its aesthetic appearance and close fit over long periods of service. The member has a cured coating of a fluorine-containing silicone on its surface or is made of a fluorine-containing silicone.
摘要:
An organosilicon compound represented by general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may be the same or different and each represent an alkyl group having 1 to 4 carbon atoms; R.sub.f represents --C.sub.1 F.sub.2l+1 where l represents an integer of 3 to 10, ##STR2## where q represents an integer of 1 to 5, or ##STR3## where q is as defined above; and X represents --O-- or --CH.sub.2 --; provided that n is 3 and m is an integer of 0 to 2 when X represents --O--, and n is 0 and m is 1 when X represents --CH.sub.2 --. The compound is useful for preparing silicone polymers having a high thermal resistance, chemical resistance and weathering resistance and have a small surface energy.
摘要:
A fluorooxyalkylene group-containing polymer composition including a liner fluorooxyalkylene group-containing polymer represented by the formula (1) which has a hydrolysable group at a terminal and is hereinafter called “one-terminal modified polymer”, and a liner fluorooxyalkylene group-containing polymer represented by the following formula (2) which has hydrolysable groups at the both terminals and is hereinafter called “both-terminal modified polymer”, wherein an amount of the both-terminal modified polymer is 0.1 mole % or more and less than 10 mole %, relative to a total mole of the one-terminal modified polymer and the both-terminal modified polymer.
摘要:
A diluent for a fluorine-containing silicone coating agent, said diluent comprising (A) at least one selected from diisopropyl ether and hexane, and (B) a fluorinated solvent having a boiling point, at atmospheric pressure, which is higher than that of the component (A) by at least 30° C. and is 180° C. or lower, with a weight ratio of the component (A) to the component (B) ranging from 95/5 to 50/50.
摘要:
The present invention relates to a photo-curable perfluoropolyether group-containing acrylate compound represented by the following formula (1): X1—[Z—Rf—Z—X2]v—Z—Rf—Z—X1 (1) wherein Rf is a divalent perfluoropolyether group; X1 is a group represented by the following formula (2): R2 is a group represented by the following formula (4): X2 is a group represented by the following formula (5): and Z is a divalent organic group.
摘要:
The purpose of the present invention is to provide a surface treating agent which provides a surface where stain does not easily adhere, does not stand out and is easily wiped off.The present invention is a perfluoropolyether group-containing polyorganosiloxane represented by the following formula (1) and a surface treating agent comprising the same, Ak(R)nZ-Q-Rf-Q-Z(R)nAk (1) wherein Rf is a divalent perfluoropolyether group; Q is a divalent group linking Rf with Z; Z is a polyorganosiloxane group having at least three siloxane bonds with its valency being trivalent to undecavalent; R is a monovalent organic group having 8 to 40 carbon atoms, n is an integer of from 1 to 8; A is a group represented by the following formula (2); and k is an integer of from 1 to 9, provided that a total of n+k=the valency of Z−1 wherein R′ is an alkyl group having 1 to 4 carbon atoms or a phenyl group; X is a hydrolysable group, a is 2 or 3; and b is an integer of from 2 to 10.
摘要:
The present invention relates to a perfluoropolyoxyalkylene group-containing polymer represented by the following formula (1), wherein Rf is a group having a perfluoropolyoxyalkylene group; W1 is a divalent organosiloxane group having at least one group represented by the following formula (2); W2 is a monovalent group selected from an alkyl group, an alkenyl group, an alkenyloxyalkyl group, an aryl group and an organosiloxane group represented by the following formula (3), and the combinations thereof, the monovalent group having 1 to 300 carbon atoms and being optionally substituted with one or more fluorine atoms; Q is, independently of each other, a divalent linking group having 2 to 12 carbon atoms, optionally containing one or more oxygen atoms, nitrogen atoms, or fluorine atoms; and p is an integer of from 1 to 20, wherein X is a hydrolysable group; R1 is an alkyl group having 1 to 4 carbon atoms or a phenyl group; y is an integer of from 1 to 5; and a is 2 or 3, wherein, R2 and R3 each are, independently of each other, a group selected from an alkyl group and an aryl group, have 1 to 200 carbon atoms and may optionally be substituted with one or more fluorine atoms and; and n is an integer of from 0 to 50.
摘要:
A coating composition comprising (A) at least one fluorine-containing organosilicon compound represented by the following formula (1) or (2) Rf1-QZ1Aα (1) AαZ1Q-Rf2-(Q-Z2-Q-Rf2)x-QZ1Aα (2) and (B) a fluorine-containing carboxylic acid having a number average molecular weight of from 100 to 10,000 and a fluorine content of at least 25 wt %, wherein an amount of (B) ranges from 0.001 to 10 parts by weight per 100 parts by weight of the component (A) wherein the amount of (B) ranges from 0.001 to 10 parts by weight per 100 parts by weight of the component (A), wherein the composition can be cured rapidly even at room temperature to produce water-repellent and antifouling coatings.
摘要:
The present invention is a fluorine-containing acrylate or alpha-substituted, fluorine-containing acrylate, represented by the following formula (1): wherein a is an integer of from 1 to 4 and b is an integer of from 1 to 4, provided that a total of a and b is 3, 4, or 5; R1 is a group represented by the following formula (2): —(C4H8O)d(C3H6O)e(C2H4O)f(CH2O)g— (2) wherein d, e, f, and g are, independently of each other, an integer of from 0 to 4, provided that a molecular weight of R1 is in a range of 30 to 300, and these repeating units may be sequenced at random; R2 is an acryl group- or alpha-substituted acryl group-containing group having 4 to 20 carbon atoms and represented by the following formula (3): wherein R3 is, independently of each other, a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group, R4 is a divalent or trivalent linking moiety having 1 to 18 carbon atoms, optionally having an ether bond and/or an ester bond, and n is 1 or 2; Rf is a perfluoropolyether residue represented by the following formula (4): wherein j, k, l, and m are, independently of each other, an integer of from 0 to 50, provided that a molecular weight of Rf is in a range of 200 to 6000, X is a fluorine atom or a trifluoromethyl group, and these repeating units may be sequenced at random; Z is a divalent organic group; and c is 0 or 1.