Functionalized nanoparticles

摘要

The present invention discloses functionalized nanoparticles comprising on the surface a covalently bound radical of the formula (I) wherein the nanoparticles are SiO2, Al2O3 or mixed SiO2 and Al2O3 nanoparticles, and wherein the general symbols are as defined in claim 1. These functionalized nanoparticles are for example useful as stabilizers and/or compatibilizers in organic materials, or as photoinitiators in pre-polymeric or pre-crosslinking formulations, or as reinforcer of coatings and improver of scratch resistance in coating compositions for surfaces.;

主权项

1. A functionalized nanoparticle comprising on a surface covalently bound radical of the formula (I) and a covalently bound radical of formula (II): wherein the functionalized nanoparticle is a SiO2 nanoparticle; X is oxygen; sulfur; or R1 is a photoinitiator having as formula selected from the group consisting of R2 and R3 are each independently hydrogen; C1-C25 alkyl; C3-C25alkyl, which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; C7-C9-phenylalkyl; —OR5; R4 is hydrogen; C1-C25alkyl; or C3-C25alkyl, which is interrupted by oxygen or sulfur; R5 is hydrogen; C1-C25alkyl; which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; C7-C9phenylalkyl;or the nanoparticle surface,
R6 and R7 are each independently hydrogen; C1-C25alkyl; C3-C25alkyl, which is interrupted by oxygen or sulfur; C2 phenyl; C7-C9-phenylalkyl; or —OR5; R8, R9 and R10 are each independently hydrogen; C1-C25alkyl; C3-C25alkyl, which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; or C7-C9phenylalkyl; R11 is C1-C25alkyl; C3-C25alkyl, which is interrupted by oxygen, sulfur oramino-, mercapto-, or hydroxyl substituted C2-C24alkyl; amino-, mercapto-, or hydroxyl substituted C2-C24alkyl, which is interrupted by oxygen, sulfur, orC2-C24alkenyl; C5-C12cycloalkyl; C5-C2cycloalkenyl; a polymerizable group; or a polymer;
R12 and R13 are each independently hydrogen; C1-C25alkyl; C3-C25alkyl, which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; C7-C9-phenylalkyl; —OR15; R14 is hydrogen; C1-C25alkyl; or C3-C25alkyl, which is interrupted by oxygen or sulfur; R15 is hydrogen; C1-C25alkyl; C3-C75alkyl, which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; C7-C9-phenylalkyl;or the nanoparticle surface,
R16 and R17 are each independently hydrogen; C1-C25alkyl; C3-C25alkyl, which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; C7-C9-phenylalkyl; —OR15, R18, R19 and R20 are each independently hydrogen; C1-C25alkyl; C3-C25alkyl, which is interrupted by oxygen or sulfur; C2-C24alkenyl; phenyl; or C7-C9phenylalkyl, R43 and R44 are each independently hydrogen; C1-C18alkoxy; or di(C1-C4alkyl)amino; R45 is hydrogen; C1-C18alkyl; or C1-C18alkoxy; R63 and R64 are each independently hydrogen; C1-C18alkoxy; C1-C4alkylthio; morpholinyl; or C7-C9phenylalkyl of phenyl; R65 and R66 are each independently C1-C18alkyl; R67 is C2-C4alkylene; R68 is hydrogen or C1-C18alkyl; R69 is C3-C7alkylene; R70 and R71 are each independently C1-C8alkyl or C7-C9-phenylalkyl; R72 and R73 are each independently C1-C8alkyl; or R72 and R73 are together —CH2CH2—O—CH2CH2— thus forming with the nitrogen atom to which they are attached a morpholinyl ring; R74 is hydrogen; C1-C18alkyl; or C7-C9-phenylalkyl; and n is 1, 2, 3, 4, 5, 6, 7 or 8.