摘要:
An electrophotographic photosensitive member has a photosensitive layer formed on a support. A surface layer (or the outermost layer) of the photosensitive layer contains a fluorine-modified organic silicone resin represented by the following average unit formula:{F(CF.sub.2).sub.a1 -Q.sub.1 -R.sub.1.m1 SiO.sub.(3-m1)/2 }.sub.X1 {F(CF.sub.2).sub.a2 -Q.sub.2 -R.sub.2.m2 SiO.sub.(3-m2)/2 }.sub.X2 . . . {F(CF.sub.2).sub.ap -Q.sub.p -R.sub.p.mp SiO.sub.(3-mp)/2 }.sub.Xp {R.sub.1 '.sub.n1 SiO.sub.(4-n1)/2)}.sub.y1 {R.sub.2 '.sub.n2 SiO.sub.4-n2)/2 }.sub.y2 . . . {R.sub.q '.sub.nq SiO.sub.(4-nq)/2 }.sub.yqwhere R.sub.1 -R.sub.p and R.sub.1 '-R.sub.q ' are each an alkyl or aryl group; Q.sub.1 -Q.sub.p are each an alkylene group; m1-mp are each an integer of 0 to 2; n1-nq are each an integer of 0 to 3; a1-aq are each an integer; x1-y1 are each a number larger than 0; and X2-Xp and Y2 are each respectively a number of 0 or more.
摘要:
An electrophotographic photosensitive member is disclosed which has a photosensitive layer and a protection layer. The protection layer contains a particulate colloidal silica and a siloxane resin to have a contact angle of water of not less than 90.degree.. The photosensitive member has a lowered surface energy and excellent mechanical and electrical durability.
摘要:
An organosilicon-modified charge transporting compound having a structure represented by the following Formula (I): wherein A represents a charge transporting group, Q represents a hydrolytic group or a hydroxyl group, R2 represents a monovalent hydrocarbon group or a halogen-substituted monovalent hydrocarbon group having 1 to 15 carbon atoms, n is 1 to 18, m is 1 to 3, and 1 is 1 to 5; and a curable composition containing the organosilicon-modified charge transporting compound and a cure type resin chiefly composed of an organosilicon high polymer.
摘要:
A coating agent composition, comprising (A) 100 parts by weight of a polymer having at least two alkoxysilyl groups, wherein the polymer has a number average molecular weight of 500 to 500,000, the polymer has a principal chain comprising a polycarbonate or a polyarylate, and the alkoxysilyl groups in the polymer have the formula —SiR3−a(OR′)a, wherein R is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, R′ is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, and a is from 1 to 3; (B) 50 to 2,000 parts by weight of an organic solvent; (C) 1 to 90 parts by weight of an organosilane, wherein the organosilane is a compound having the formula R″eSiY4−e or a partially hydrolyzed condensate thereof, wherein R″ is a substituted or unsubstituted monovalent hydrocarbon group or a hydrogen atom, Y is a hydrolyzable group, and e is from 0 to 2; and (D) a cure catalyst in an amount sufficient to cure the composition. A method of preparing a coating agent composition and a coating agent prepared by curing the composition.
摘要:
A coating agent composition of the present invention consists of: (A) an acrylic-type copolymer that has a weight-average molecular weight within the range of 3,000 to 100,000 and contains in its side molecular chains hydrolysable silyl groups of the following formula: —COO-Q-SiR2n(OR3)3-n and organosiloxysilyl groups of the following formula: —COO-Q-Si(OSiR43)3; and (B) a condensation-reaction accelerating catalyst. Prior to curing, the composition demonstrates excellent storage stability and coating properties, while after curing the composition produces a coating film of high hardness that has excellent water-repellent properties and durability.
摘要:
This invention pertains to a dispersibility improver for fluororesin powders that has the ability to induce the uniform dispersion of fluororesin powders in organic resins; a modifier for application to organic resins wherein said modifier comprises fluororesin powder and the aforesaid dispersibility improver; and finally organic resin compositions that contain the aforesaid modifier and as a consequence have the ability to form uniform and transparent coatings having an excellent surface smoothness. The dispersibility improver for fluororesin powders is a polyorganosiloxane whose molecule contains (F1) at least 1 organic group selected from the group consisting of polyoxyalkylene-functional organic groups, alkyl groups having at least 12 carbon atoms, and polydialkylsiloxane chain-containing organic groups, and (F2) at least 1 perfluoroalkyl-functional organic group with the general formula —R2—X—R1—(CF2)aF wherein R1 represents C1 to C10 divalent hydrocarbon groups, R2 represents C1 to C20 divalent hydrocarbon groups, X is a group with the formula —CO— or —COO—, and a is an integer with a value of at least 3.
摘要:
This invention relates to a silicone-modified vinyl polymer having a weight-average molecular weight from 1,000 to 1,000,000 containing a siloxane group having the formula (--R.sub.a SiO.sub.(3-a)/2)(F(CF.sub.2).sub.b --R.sup.4 --R.sub.c SiO.sub.3-c)/2).sub.x (R.sub.d SiO.sub.(4-d)/2).sub.y (R.sup.5 O.sub.1/2).sub.z wherein R denotes a monovalent hydrocarbon group free of unsaturated bonding, R.sup.4 denotes an alkylene group or an alkyleneoxyalkylene group, R.sup.5 denotes hydrogen or an alkyl group, a is an integer from 0 to 2, b is an integer with a value of at least 4, c is an integer from 0 to 2, d is an integer from 0 to 3, x is a number greater than 0, and y and z are each numbers with values of 0 or more. The polymers of this invention are useful in forming water repellent and oil repellent coatings.
摘要:
A coating agent composition of the present invention consists of: (A) an acrylic-type copolymer that has a weight-average molecular weight within the range of 3,000 to 100,000 and contains in its side molecular chains hydrolysable silyl groups of the following formula: —COO-Q-SiR2n(OR3)3-n and organosiloxysilyl groups of the following formula: —COO-Q-Si(OSiR43)3; and (B) a condensation-reaction accelerating catalyst. Prior to curing, the composition demonstrates excellent storage stability and coating properties, while after curing the composition produces a coating film of high hardness that has excellent water-repellent properties and durability.
摘要:
Resinous composition comprising: (A) 100 weight parts of (R2SiO2/2)w(RSiO3/2)x(SiO4/2)y(O1/2R1)z wherein R is selected from the group consisting of monovalent hydrocarbon groups having 1 to 10 carbon atoms, R1 is selected from the group consisting of the hydrogen atom and saturated hydrocarbon groups having from 1 to 6 carbon atoms, w is a number from 0 to 0.2, x is a number from 0.4 to 0.9, y is a number from 0.1 to 0.6, z is a number from 0.1 to 0.5, and (w+x+y)=1; (B) 20 to 150 weight parts of an alcohol-based solvent; (C) 100 to 1000 weight parts of a solvent selected from the group consisting of hydrocarbon-based solvents and polydimethylsiloxanes described by the formula Me3SiO(Me2SiO)nSiMe3, wherein Me is the methyl group and n has a value of 0 or 1; (D) 1 to 100 weight parts of a coupling agent selected from the group consisting of alkoxysilanes and silane coupling agents; (E) 0.1 to 20 weight parts of a condensation catalyst, and (F) 0.1 to 20 weight parts of a polyoxyalkylene-modified silicone.
摘要:
A silicone rubber composition comprising 0.01 to 50 weight percent of a perfluoroalkyl group-containing polydiorganosiloxane having on a side chain (F1) an organic group selected from the group consisting of polyoxyalkylene group-containing organic groups, C12 or higher alkyl group, and polydialkylsiloxane chain-containing organic groups, and having of a side chain or at a molecular chain terminal (F2) a perfluoroalkyl group-containing organic group described by the general formula F(CF2)a—R1—, where R1 is selected from the group consisting of an alkylene group, an alkyleneoxyalkylene group, and a group in which ═CO or —COO— is present in an alkylelne chain, and a is an integer of at least 3, and having a weight average molecular weight of at least 1000.