Patent ID: 6830816
Filing Date: 2004-12-14
Classification: C01P,C08K,C09C,Y10T

Abstract:
A filled composition, comprising:at least one silico-organic nanohybrid or microhybrid capsule; and at least one synthetic resin or synthetic-resin precursor compound; wherein the silico-organic nanohybrid or microhybrid capsule comprises an oxide core A and a silico-organic shell B; wherein the oxide core A comprises at least one nanoscale or microscale particle (KA-O) of component (a), (b), or a mixture thereof, wherein the (KA-O) component (a) comprises at least one nanoscale oxide or mixed oxide of at least one metal or semimetal selected from the group consisting of main groups 2 to 6 of the Periodic Table, transition groups 1 to 8 of the Periodic Table, lanthanides, and mixtures thereof; wherein the (KA-O) component (b) comprises at least one microscale corundum; wherein the silico-organic shell B comprises: at least one silico-organic compound having the formula Ia: (Siâ€²Oâ€”)xSiâ€”Râ€ƒâ€ƒ(Ia) wherein R denotes an organofunctional group selected from the group consisting of straight-chain, branched or cyclic alkyl group with 1 to 50 C atoms, alkenyl group with 2 to 6 C atoms, chloroalkyl, isocyanoalkyl, cyanoalkyl, fluoroalkyl, aryl, acylalkyl, acryloxyalkyl, methacryloxyalkyl, polysulfanealkyl, mercaptoalkyl, thiacyamidoalkyl, glycidyloxyalkyl, aminoalkyl, diaminoalkyl, triaminoalkyl, carbonatoalkyl and ureidoalkyl; wherein x is a number from 0 to 20, wherein remaining free valences of Si are each independently (KA-O)â€”, SiOâ€” or -Z, wherein remaining free valences of Siâ€² are each independently (KA-O)â€”, SiOâ€”, â€”R, or -Z, wherein the Z groups are the same or different and denote hydroxy or alkoxy group, and wherein each Si or Siâ€² in the shell B have not more than one â€”R attached thereto; which is obtained by reaction of: (i) one or more oxide particles selected from the group consisting of: (a) at least one nanoscale oxide and/or mixed oxide of at least one metal or semimetal of the second to sixth main group or of the first to eighth transition group of the periodic table or of the lanthanides or (b) a microscale corundum; and (c) a mixture of oxide particles of (a) and (b); with (ii) at least one organofunctional silane having the formula II: R1sR2rSiY(4-s-r)â€ƒâ€ƒ(II), wherein the groups R1 and R2 are the same or different and each represents a straight-chain, branched or cyclic alkyl group with 1 to 50 C atoms, an alkenyl group with 2 to 6 C atoms, a chloroalkyl, isocyanoalkyl, cyanoalkyl, fluoroalkyl, aryl, acylalkyl, acryloxyalkyl, methacryloxyalkyl, polysulfanealkyl, mercaptoalkyl, thiacyamidoalkyl, glycidyloxyalkyl, aminoalkyl, diaminoalkyl, triaminoalkyl, carbonatoalkyl or ureidoalkyl group, Y represents a methoxy, ethoxy, i-propoxy, n-propoxy or 2-methoxyethoxy group, wherein s is equal to 1 or 2 or 3, wherein r is equal to 0 or 1 or 2, with the proviso that (s+r)&lE;3, (iii) optionally a monomeric and/or oligomeric silicic acid ester, which is substituted with one or more methoxy, ethoxy, n-propoxy or i-propoxy groups and which has an average degree of oligomerization of 1 to 50; and (iv) optionally an organofunctional siloxane having one or more functionalities which are the same or different and each Si atom in the siloxane is substituted with one or more functionality selected from the group consisting of alkyl, fluoroalkyl, cyanoalkyl, isocyanoalkyl, alkenyl, aminoalkyl, diaminoalkyl, triaminoalkyl, alkoxyalkyl, hydroxyalkyl, acylalkyl, glycidyloxyalkyl, acryloxyalkyl, methacryloxyalkyl, mercaptoalkyl, ureidoalkyl, aryl and alkoxy, and remaining free valences of each Si atom in the siloxane are independently saturated by one or more methoxy or ethoxy or hydroxy groups; wherein the reaction is performed in situ in a liquid, curable synthetic resin or a precursor stage of a synthetic resin in which the content of oxide particles of component (i) is 10 to 300 parts by weight relative to 100 parts by weight of the synthetic resin component used, and the reaction is performed in a kneading or dispersing machine, which is in the form of a filled paste.