摘要:
A process for producing a molded article is provided includinga) The surface of a mold is cooled with a releasing agent for powder molding which has, as an essential component, a copolymer AB derived from at least one monomer A represented by the following general formula (I) ##STR1## wherein X is a hydrogen atom or a methyl group, k is an integer of 0-5, l is an integer of 1-3, m is an integer of 1-3, n is an integer of 0-550 and Y is a methyl group or a fluorine atom-containing substituent having 1-20 carbon atoms,and at least one vinyl-polymerizable monomer B containing at least one alkyl acrylate or alkylmethacrylate wherein the alkyl group has 1 to 8 carbon atoms.b) The coated mold is heated.c) A powder of a non-rigid vinyl chloride resin containing a plasticizer is allowed to adhere to the heated mold to melt the powder.d) The mold, releasing agent and powder are cooled to form a molded article.e) The molded article is peeled from the mold. Monomer A and monomer B are combined in proportions within the copolymer AB such that the film of releasing agent has good compatibility with the vinyl chloride resin and sufficient releasability from the mold such that the film migrates to the surface of the molded article at the time of peeling.
摘要:
A polyorganosiloxane compound which has a fluorine-containing group at its one terminal and an aminopropyl group at its other terminal.The polyorganosiloxane compound can provide various improved properties as well as new properties to synthetic resins by a chemical connection to the synthetic resins with a functional group or groups reactive with the amino group at the other terminal thereof.
摘要:
This invention relates to 1,2-dichloro-1,2,2-trimethyl-1-phenyldisilane expressed by the chemical formula (II),Cl(CH.sub.3).sub.2 SiSi(CH.sub.3)(C.sub.6 H.sub.5)Cl.This invention further relates to a method for producing 1,2-dichloro-1,2,2-trimethyl-1-phenyldisilane by reacting phenyl lithium with 1,1,2-trichloro-1,2,2-trimethyldisilane expressed by the chemical formula (III),Cl(CH.sub.3).sub.2 SiSi(CH.sub.3)Cl.sub.2.This invention still further relates to a method for producing 1,2-dichloro-1,2,2-trimethyl-1-phenyldisilane by reacting 1,1,2-trichloro-1,2,2-trimethyldisilane with phenylmagnesium halide expressed by the general formula (IV), C.sub.6 H.sub.5 MgX (X=halogen atom) in the presence of a cobalt catalyst.
摘要:
A polysiloxane compound modified with two hydroxyl groups at the one end thereof and particularly suitable for improving the surface characteristics of resins prepared by polycondensation of a polyol with another polyfunctional compound, and a silicone-modified polyurethane having superior characteristics such as low frictional properties, water repellency, oil repellency, thrombosis resistance, etc. and also a process for producing the polyurethane are provided, which polysiloxane compound expressed by the formula ##STR1## wherein R represents H, Me (methyl) or Et (ethyl) and n represents an integer of 0 to 4,000, and which silicone-modified polyurethane is obtained from a compound having at least two isocyanate groups and a compound having at least two hydroxyl groups, and by using as a part of the compound having at least two hydroxyl groups, the polysiloxane compound of the above formula (I) in the urethane bond-forming reaction.
摘要:
This invention relates to a novel asymmetric 1,1-dichloro-1,2,2-trimethyl-2-phenyldisilane expressed by the chemical formula (I), (C.sub.6 H.sub.5) (CH.sub.3).sub.2 SiSi(CH.sub.3)Cl.sub.2.This invention further relates to a method for producing 1,1-dichloro-1,2,2-trimethyl-2-phenyl disilane by reacting 1,1,2-trichloro-1,2,2-trimethyl disilane expressed by the chemical formula (III), Cl(CH.sub.3).sub.2 SiSi(CH.sub.3)Cl.sub.2 with phenyl magnesium halide expressed by the general formula (IV), C.sub.6 H.sub.5 MgX (X=halogen atom) in the presence of a transition metal (except for cobalt) catalyst.
摘要:
The present invention relates to an organosiloxane compound suitable for the modification of silicone rubbers and synthetic resins, an organosiloxane compound useful as its intermediate, and a process for preparing them. The organosiloxane compound of the present invention can be represented by the general formula (IV) ##STR1## wherein j is an integer of 1 to 2000, R is an alkyl group having 1 to 4 carbon atoms, and R.sup.1 is a pentafluorophenyl group or a straight-chain or a branched fluoroalkyl group represented by the formula (III)C.sub.1 H.sub.b F.sub.2a-b+1 (II)wherein a is an integer of 3 to 18, and b is an integer of 0 to 2a.The siloxane compound of the present invention has a siloxane chain each having a substituent with a fluorine atom containing group at the terminal thereof. Each of molecules constituting the polysiloxane compound of the present invention has a terminal hydrosilyl group portion and a fluorine atom-containing terminal substituent portion therein. Since the reactive group of the hydrosilyl group is chemically bonded to the synthetic resins, the deterioration in characteristics with time can be hindered. The synthetic resins can be provided with the specific function of the fluoroalkyl group without impairing characteristics which the polysiloxane has.
摘要:
A polyorganosiloxane compound contains a fluorine-containing substituent at least at its .alpha.-, .alpha.'- or .alpha."-position and a substituent having an epoxy linkage at its .omega.-position. The polyorganosiloxane compound can provide a synthetic resin with properties which cannot be provided by conventional polysiloxane compound by incorporating the polyorganosiloxane compound into the synthetic resin through a chemical linkage via the epoxy linkage thereof and a group reactive with the epoxy linkage thereof.
摘要:
The present invention relates to an organosiloxane compound suitable for the modification of silicone rubbers and synthetic resins, an organosiloxane compound useful as its intermediate, and a process for preparing them. The organosiloxane compound of the present invention can be represented by the general formula (IV) ##STR1## wherein j is an integer of 1 to 2000, R is an alkyl group having 1 to 4 carbon atoms, and R.sup.1 is a pentafluorophenyl group or a straight-chain or a branched fluoroalkyl group represented by the formula (II)C.sub.a H.sub.b F.sub.2a-b+1 (II)wherein a is an integer of 3 to 18, and b is an integer of 0 to 2a.The siloxane compounds of the present invention also include compounds having siloxane chains, at least one of the chains having a substituent with a fluorine atom containing group at the terminal thereof. Each of the molecules constituting the polysiloxane compound of the present invention has a terminal hydrosilyl group portion and a fluorine atom-containing terminal substituent portion therein. Since the reactive group of the hydrosilyl group is chemically bonded to the synthetic resins, the deterioration in characteristics with time can be hindered. The synthetic resins can be provided with the specific function of the fluoroalkyl group without impairing characteristics which the polysiloxane has.
摘要:
A novel polyorganosiloxane is provided which has a fluorine atom-containing substituent at one terminal of its molecular chain and an unsaturated double bond-containing substituent at the other terminal thereof. The polyorgansiloxane of the present invention is represented by the general formula (I) ##STR1## wherein j is an integer of 1 to 2000, and R.sup.1 is an unsaturated double bond-containing group, each of R.sup.2 and R.sup.3 is an alkyl group having 1 to 4 carbon atoms, phenyl group, vinyl group, straight-chain or branched alkenyl group having 3 to 20 carbon atoms, or a siloxane chain which is similar to ##STR2## and R.sup.4 is a fluorine atom-containing substituent, ##STR3## wherein R.sup.10 is similar to R.sup.4 and is the fruorine atom-containing substituent, R.sup.11 is an alkyl group having 1 to 4 carbon atoms or phenyl group, and the oxygen atoms sited on the right side of the above formulae are combined with a siloxane chain having the unsaturated double bond-containing substituent at the terminal thereof which is similar to ##STR4##
摘要:
A polyorganosiloxane compound is provided which has a fluorine-containing group at its .alpha.-position and one or more than one hydrosilyl group at its .omega.-position, has a fluorine-containing group located at least at its .alpha.- and .alpha.'-position and one or more than one hydrosilyl group at its .omega.-position or has a fluorine-containing group at least at its .alpha.-, .alpha.'- and .alpha."-position and one or more than one hydrosilyl group at its .omega.-position.