摘要:
The invention relates to novel organopolysiloxanes which contain sulfosuccinate groups and consist of average units of the general formula ##EQU1## in which R is the same or different monovalent hydrocarbon radicals having from 1 to 18 carbon atom(s) per radical or monovalent halogenated hydrocarbon radicals having from 1 to 18 carbon atom(s) per radical, Z is a radical of the formula ##STR1## in which Y represents a radical of the formula ##STR2## R.sup.1 is a hydrogen atom or an alkyl radical having from 1 to 4 carbon atom(s) per radical, M.sup.+ represents a hydrogen ion and/or an alkali metal ion or an ammonium ion, a is 0 or 1, with an average of from 0.03 to 1.0, b is 0, 1, 2 or 3, with an average of from 1.0 to 2.5, and the sum of a+b is no greater than 3, with the proviso that the compound contains at least one radical Z per molecule.
摘要:
Crosslinkable compositions containing(1) An organopolysiloxane having alkenyloxy functional groups and containing Si-bonded radicals Y of the formula--(CH.sub.2).sub.2 --R.sup.1 --(A--R.sup.2).sub.z --O--R.sup.3 --CH.dbd.CH.sub.2, in whichA represents --O--, --S--or ##STR1## group, R.sup.1 represents a straight-chain or branched alkylene radical having from 1 to 7 carbon atoms per radical of a cycloalkylene radical having from 5 to 7 carbon atoms per radical,R.sup.2 represents a straight-chain or branched alkylene radical having from 2 to 4 carbon atoms per radical, which can be substituted by a hydroxyl group, methoxy group, ethoxy group or trimethylsiloxy group,R.sup.3 represents a straight-chain or branched alkylene radical having from 1 to 7 carbon atoms per radical, and z is 0, 1 or 2,(2) an organopolysiloxane containing Si-bonded hydrogen atoms, and(3) a catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic double bond.
摘要:
Novel, alkenyloxy-functional organosilicon compounds are described which contain at least one Si-bonded Y radical per molecule having the formula--(CH.sub.2).sub.2 --R.sup.2 --(A--R.sup.3).sub.z --O--CH.dbd.CH--CH.sub.2 --R.sup.4 (I),in whichA represents --O--, --S-- or ##STR1## R.sup.2 represents a linear or branched alkylene radical having from 1 to 7 carbon atom(s) per radical or a cycloalkylene radical having from 5 to 7 carbon atoms per radical, R.sup.3 represents a linear or branched alkylene radical having from 2 to 4 carbon atoms per radical, which may be substituted by a hydroxyl group, methoxy group, ethoxy group or trimethylsiloxy group, R.sup.4 represents a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms(s) per radical, and z is 0, 1 or 2.The alkenyloxy-functional organosilicon compounds are preferably silanes or organopolysiloxanes.The alkenyloxy-functional organopolysiloxanes can be crosslinked, for example, with ultraviolet light. These organopolysiloxanes can also be used for preparing coatings.
摘要:
Novel organosilicon compounds containing alkenyl groups and comprising units of the average formula ##STR1## in which R and R.sup.1 are hydrocarbon containing groups, and A is a radical of the formula ##STR2## in which R.sup.2, R.sup.3 and R.sup.4 are hydrocarbon containing groups; x is 0 or 1; y is 0 or 1, with the proviso that the sum x+y is 1 or 2; a is 0 or 1, with an average of 0.003 to 1.0; b is 0, 1, 2 or 3, with an average of 0.0 to 3.0; c is 0, 1, 2 or 3; with an average of 0.0 to 3.0; and the sum a+b+c.ltoreq.4, with an average of 1.5 to 4.0, with the proviso that each molecule contains at least one A radical and a method for preparation of the novel compounds are disclosed.
摘要:
Organo(poly)siloxanes having Si-linked, conjugated dienyl groups are prepared by adding a secondary or tertiary acetylenic alcohol (1) to an organo(poly)siloxane (2) having at least one Si-linked hydrogen atom in the presence of a catalyst (3) which promotes the addition of Si-linked hydrogen to an aliphatic multiple bond, and then eliminating water by an intramolecular reaction in the presence of an acid catalyst (4) from the alkenol groups of the organo(poly)siloxane thus obtained.
摘要:
(Methy)acrylic acid esters of the general formula(Mo).sub.n --[--A--O--CO--CH.sub.2 --O--CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CO--O--].sub.x --A--(OM).sub.nare described whereinA is an alcohol radical having at least 4 chain atoms between two junction sites.M is CH.sub.2 .dbd.C(R.sup.1)--CO wherein R.sup.1 stands for hydrogen or methyl,n is 1 or 2, andx is 0.3 to 3.These esters are suited for the preparation of dental compositions.
摘要:
Mixtures of silicone resin with an organopolysiloxane copolymer prepared by hydrosilylating a substantially linear polymer containing an isocyanate reactive group with an Si—H containing organopolysiloxane, and reacting this intermediate with a diisocyanate, are useful as long lasting defoamers which are compatible with numerous media.
摘要:
Silicone polyethers are prepared in a two stage process by reacting an unsaturated polyether with a first Si—H functional organopolysiloxane and then with a second organopolysiloxane, in which the weight ratio of silicon bonded hydrogen in the first and second organopolysiloxanes is at least 0.9. The reaction is more rapid than a single step process and produces a product with less unreacted Si—H content.
摘要:
High-molecular-weight siloxane polymers are prepared in a multi-step process wherein an Si—H functional linear siloxane containing silanol groups is reacted with a hydrosilylatable organic compound, and the product is then condensed.
摘要:
β-ketocarbonyl-functional organosilicon compounds are prepared by reacting an organosilicon compound containing at least one primary amino group with a compound which liberates a diketene, the reaction taking place in the presence of an organic compound which inhibits or prevents the reaction of diketenes with primary or secondary amino groups. The products are different from those produced merely by the reaction of a diketene with an amino-group-containing organosilicon compound.