摘要:
The invention relates to a process by which organosilicon compounds carrying sulfur-containing organic radicals can easily be prepared by reacting organosilicons of the general formulaR.sub.a (R.sup.1 O).sub.b R.sup.2.sub.c SiO.sub.(4-a-b-c)/2(I)in whichR can be identical or different and is a monovalent organic radical,R.sup.1 can be identical or different and is a hydrogen atom or a monovalent organic radical,R.sup.2 can be identical or different and is a radical --QX, where Q is a divalent hydrocarbon radical and X is a halogen atom,a is 0, 1, 2 or 3,b is 0, 1, 2 or 3 andc is 0, 1, 2 or 3,with the proviso that the organosilicon compound has at least one radical R.sup.2 per molecule and the sum of a, b and c is less than or equal to 4, with sulfite in the presence of water.
摘要:
Novel organosiloxane compositions which contain (methyl)styrene groups and can be prepared on the basis ofA) oligomeric or polymeric organosilicon compounds comprising at least one unit of the formulaGR.sub.c SiO.sub.(4-c-1)/2 (I)or at least one unit of the formula (I) and at least one unit of the formulaO.sub.(4-c-1)/2) R.sub.c Si--G.sup.1 --R.sub.c SiO.sub.(4-c-1)/2(II)B) monomeric alkenyloxy compounds, maleates, fumarates, maleimides, (meth)acrylates, (methyl)styrenes, acrylamides, itaconic esters and/or oligomeric or polymeric organosilicon compounds containing on average more than one alkenyloxy, maleate, fumarate, maleimide or (meth)acrylate group, where R are identical or different hydrocarbon radicals which may be halogenated or unhalogenated or a radical of the formula--R.sup.1 --[OCH.sub.2 CH.sub.2 ].sub.o --[OCH(CH.sub.3)CH.sub.2 ].sub.p --[O(CH.sub.2).sub.4 ].sub.q --OR.sup.2,whereR.sup.1 is a linear or branched alkylene radical,R.sup.2 is a hydrogen atom, an alkyl radical or a radical of the formula --CO--R.sup.3, where R.sup.3 is an alkyl radical,G is a radical of the formula (IV) --R.sup.4 -(phenyl) which is substituted by [--Y.sub.(5-d) ] and (--R.sup.5.sub.d), with the proviso that at least one radical R.sup.5 is present andG.sup.1 is a radical of the formula (V) --(phenyl)-(R.sup.4).sub.d -- which is substituted by [--Y.sub.4-d ], whereR.sup.4 is a linear or branched, substituted or unsubstituted alkylene radical,R.sup.5 is a vinyl radical or isopropenyl radical,Y can be identical or different and each Y is a hydrogen atom or is as defined for R, or is a radical of the formula --OR.sup.6, whereR.sup.6 is a C.sub.1-8 alkyl radical optionally interrupted by an ether oxygen atom, andc is 0, 1 or 2, on average from 0.0 to 2.0,d is 1, 2 or 3,o is 0 or an integer from 1 to 100,p is 0 or an integer from 1 to 100, andq is 0 or an integer from 1 to 100, with the proviso that the sum o+p+q is >0.
摘要:
A novel process for preparing organosilicon compounds containing (meth)acxyloxy groups is described, in which alkoxylated alk-2-yne 1,4-di(meth)acrylates (1) of the formula ##STR1## where R.sup.2 is a hydrogen atom or a methyl radical,R.sup.3 is a linear or branched alkylene radical having from 1 to 6 carbon atoms per radical andR.sub.4 is a linear or branched alkylene radical having from 1 to 6 carbon atoms per radical, andz is an integer from 1 to 12,are reacted with organosilicon compounds (2) comprising units of the formula ##STR2## where R is an identical or different monovalent, optionally halogenated hydrocarbon radical having from 1 to 18 carbon atoms per radical, ande is 0 or 1, on average from 0.01 to 1.0,f is 0, 1, 2 or 3, on average from 0.0 to 3.0, andhaving at least one Si-bonded hydrogen atom per molecule in the presence of catalysts (3) which promote the addition Si-bonded hydrogen onto aliphatic multiple bonds and also in the presence of polymerization inhibitors (4), where alkoxylated alk-2-yne 1,4-di(meth)acrylates (1) are used in amounts of from 1.01 to 1.5 mole per gram atom of Si-bonded hydrogen in organosilicon compound (2).
摘要:
The invention describes crosslinkable compositions comprising(1) organosilicon compounds which contain radicals having aliphatic carbon-carbon multiple bonds,(2) organosilicon compounds having Si-bonded hydrogen atoms or, in place of or in addition to (1) and (2); said composition further comprising(3) organosilicon compounds which contain radicals having aliphatic carbon-carbon multiple bonds and Si-bonded hydrogen atoms,(4) catalysts which promote the addition of Si-bonded hydrogen to aliphatic multiple bonds, and ##STR1## where R.sup.1 and R.sup.2 are as defined in claim 1, and X is a radical of the formula --OH, --Cl, --Br and --CN, with the radical --OH being particularly preferred.
摘要:
The invention describes novel organosilicon compounds having fluorescent groups, containing units of the formula ##EQU1## where R is an identical or different, a monovalent, optionally substituted hydrocarbon radical having from 1 to 18 carbon atom(s) per radical, which may be interrupted by one or more oxygen atom(s),X is identical or different, and is a chlorine atom or a radical of the formula OR.sup.1,whereR.sup.1 is a hydrogen atom, or an alkyl radical having from 1 to 8 carbon atom(s) per radical which may be substituted by an ether oxygen atom,E is an organic radical having one or more (meth)acrylate groups,A is a radical of the formula--R.sup.2 [--NR.sup.3 --L].sub.x or --R.sup.2 [--S--L].sub.x(II),whereR.sup.2 is a divalent or trivalent, optionally substituted hydrocarbon radical having from 2 to 50 carbon atoms per radical, which is substituted by one or more groups of the formulae ##STR1## x is 1 or 2, R.sup.3 is as defined for R.sup.1 or is a radical of the formula --C(.dbd.O)--R.sup.1, andL is a fluorescent, organic radical,a is 0, 1 or 2, b is 0, 1, 2 or 3, c is 0, 1, 2 or 3, d is 0, 1 or 2 and the sum a+b+c+d.ltoreq.4,with the proviso that at least one radical A is present per molecule.
摘要翻译:本发明描述了具有荧光基团的新型有机硅化合物,其含有下式的单元,其中R是相同或不同的,每个基团具有1至18个碳原子的单价任选取代的烃基,其可被一个或多个 更多的氧原子,X是相同或不同的,并且是氯原子或式OR1的基团,其中R1是氢原子或每个基团具有1至8个碳原子的烷基,其中 可以被醚氧原子取代,E是具有一个或多个(甲基)丙烯酸酯基团的有机基团,A是式-R 2 [-NR 3 -L] x或-R 2 [-SL] x(II ),其中R 2是每个基团具有2至50个碳原子的二价或三价任选取代的烃基,其被一个或多个式x所代表的基团取代为1或2,R 3如对R 1所定义或是 式-C(= O)-R1的基团,L是荧光的有机基团,a是0,1或2,b是0,1或2, 2或3,c是0,1,2或3,d是0,1或2,并且和a + b + c + d 4,条件是每个分子存在至少一个基团A.
摘要:
Organosilicon compounds having Si-bonded hydrogen atoms are reacted with organic compounds having aliphatic multiple bonds in the presence of triazene oxide-transition metal complexes. The triazene oxide-transition metal complexes are activated by heating at temperatures of from 50.degree. C. to 250.degree. C. and/or by irradiation with light.
摘要:
Radiation-curable compositions containing linear organopolysiloxanes bearing (meth)acryloxy groups and a photosensitizer are useful for release coatings particularly release coatings with enhanced adhesion to the substrate onto which they are coated, for example those used for adhesives such as pressure sensitive adhesive labels.