摘要:
The invention concerns a novel process for the preparation of poly(N-acylethyleneimine) grafted polysiloxanes comprising sulfo-esterifying all or part of alcoholic hydroxyl groups of a hydroxy containing polysiloxane and conducting, in said sulfo-esterification reaction mixture, ring-opening polymerization of a 2-oxazoline compound. The present process can afford the desired poly(N-acylethyleneimine) grafted polysiloxane in a higher reaction yield.
摘要:
A novel class of polymerizable monomers containing silicons represented by the formula: ##STR1## wherein R.sup.1 represents a substituted or unsubstituted monovalent hydrocarbon residue; R.sup.2 represents an alkylene attached to silicon atom and selected from an unsubstituted alkylene, a substituted alkylene, an unsubstituted alkylene containing hetero atoms or a substituted alkylene containing hetero atoms; m and n each represents a positive number which will fulfil the requirement of 2.ltoreq.m+n.ltoreq.4; R.sup.3 is hydrogen or methyl; A is a direct bond, ##STR2## or a substituted or unsubstituted phenylene; B is ##STR3## R.sup.4 and R.sup.5 each represents an alkylene, providing that when A represents ##STR4## m+n is 2. The invention also provides a preparation method thereof.
摘要:
A polycarbonate polymer and resin composition having excellent transparency and abrasion resistance, comprising a mixture of (i) a polycarbonate polymer having a repeating unit having a specific grafted polysiloxane structure, and (ii) from 0 to 20 wt % of a diorganopolysiloxane. The polycarbonate polymer is obtained by reacting (a) a specific polysiloxane compound and (b) a specific bisphenol compound with (c) a carbonate ester forming compound.
摘要:
A coating composition for carriers which are adapted for use in electrophotography is described. The composition comprises an organopolysiloxane of the following average unit formula (1)R.sup.1.sub.a Si(OR.sup.2).sub.b O.sub.[4-(a+b)]/2 (1)wherein R.sup.1 represents an alkyl group having from 1 to 10 carbon atoms or a phenyl group, R.sup.2 represents a hydrogen atom or an alkyl, alkenyl or alkoxyalkyl group, each having from 1 to 10 carbon atoms for the alkyl and alkenyl and from 2 to 10 carbon atoms for the alkoxyalkyl, a is a value of 0.8.ltoreq.a.ltoreq.1.8, b is a value of 0
摘要:
A curable resin composition comprises (A) a silicone resin having epoxy and phenyl groups and at least two hydrolyzable silyl groups and/or silanol groups in one molecule, (B) a vinyl polymer having a group or groups reactive with the epoxy group in the ingredient (A), and (C) a condensation catalyst for the silicone resin.
摘要:
A blend of (A) an acrylic, polyester or epoxy resin having at least two alkenyl or alkynyl groups in a molecule, (B) an organic silicon compound having at least two hydrogen atoms each directly attached to a silicon atom in a molecule, and (C) a hydrosilylaion catalyst is blended with (D) an organic iron or aluminum compound to form a hydrosilylative composition. Component (D) scavenges a catalyst poison, permitting components (A) and (B) to undergo hydrosilylation reaction with the aid of catalyst (C).
摘要:
The invention concerns a novel process for the preparation of poly(N-acylethyleneimine) grafted poysiloxanes comprising sulfoesterifying all or part of alcoholic hydroxyl groups of a hydroxy containing polysiloxane and conducting, in said sulfoesterification reaction mixture, ring-opening polymerization of a 2-oxazoline compound. The present process can afford the desired poly(N-acylethyleneimine) grafted polysiloxane in a higher reaction yield. The invention also provides novel poly(N-acylethyleneimine) grafted polysiloxanes.
摘要:
A hard coating composition comprising an epoxy group-containing organic silicon compound and inorganic submicron particles such as silica sol is curable with a minimal amount of an antimony compound as the curing catalyst. The composition is thus stable during shelf storage and can be cured to a plastic optical article as a mar resistant hard coating film.
摘要:
A coating composition to form a coat on the surface of electrophotographic carrier which imparts excellent durability, moisture resistance and flowability to the carrier comprises:(A) 100 parts by weight of an organopolysiloxane of the general formula;R.sub.a X.sub.b SiO.sub.(4-(a+b))/z wherein R represents a substituted or unsubstituted hydrocarbon residue; X represents a hydroxyl group, or a hydrolizable group; "a" is a number in the range of 0.8
摘要:
A primer composition dilluted with a suitable organic solvent comprising (A) an organic copolymer comprising an alkoxysilylated monomer, vinyl acetate and other monomers copolymerizable therewith, (B) a polyalkyl (meth)acrylate, (C) a crosslinking agent for said copolymer (A), and (D) an ultraviolet absorber. This primer composition is a very effective primer in forming an organopolysiloxane coating layer excellent in adhesion, endurance, weathering resistance of the surface of a molded article of a thermoplastic resin.