COMPOSITION BASED ON SOLVENT-MODIFIED RESIN AND METHODS OF ITS APPLICATION Russian patent published in 2009 - IPC H01L23/29 H01L21/56 C08L63/00 C01B33/14 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to versions of transparent composition, applied, for instance, as under crystal filler, to solid-body device, and to method of transparent composition production. According to first version transparent composition contains, at least, one hardened aromatic epoxy resin, at least, one solvent, filler, and at least, one component selected from group including cycloaliphatic epoxy monomer, aliphatic epoxy monomer, hydroxyaromatic compounds and their combinations and mixtures. Filler represents colloidal silicon dioxide, functionalised with organosiloxane, and has particle size from 20 nm to 100 nm. If necessary, composition contains, at least, one component, selected from group including epoxy resins, acrylate resins, polyimide resins, fluoropolymers, benzocyclobutene resins, bismaleimide triazine resins, fluorinated polyallyl ethers, polyamide resins, polyimidoamide resins, phenolic cresol resins, aromatic polyester resins, resins of polyphenylene ester and polydimethylsiloxane resins. According to second version composition of under crystal filler contains cresol-novolac epoxy resin, at least, one component selected from group including cycloaliphatic epoxy resin, aliphatic epoxy resin, hydroxyaromatic compounds and their mixtures and combinations, at least, one solvent, dispersion of functionalised colloidal silicon dioxide, which has size of solid particles from 50 nm to 100 nm, and, at least, one catalyst. Solid-body device contains crystal, padding and transparent hardened composition of filler, located between crystal and padding. Filler composition contains, at least, one aromatic epoxy resin, dispersion of functionalised colloidal silicon dioxide, at least, one solvent, and, at least, one component selected from group including cycloaliphatic epoxy monomer, aliphatic epoxy monomer, hydroxyaromatic compounds and their combinations and mixtures. Functionalised colloidal silicon dioxide has size of solid particles from 50 nanometers to 100 nanometers. Method of manufacturing transparent under crystal filler composition includes the following stages. First, colloidal silicon dioxide is functionalised. Stable concentrated dispersion of functionalized colloidal silicon dioxide, with solid particle size from 50 nm to 100 nm, containing from 15 wt % to 75 wt % of silicon dioxide, is formed. Aromatic epoxy resin solution is mixed with, at least, one component, selected from group including cycloaliphatic epoxy monomer, aliphatic epoxy monomer, hydroxyl aromatic compounds and their mixtures and combinations, in solvent, with dispersion of colloidal silicon dioxide. Further solvent is removed and filler composition is hardened.

EFFECT: reduction of composition heat expansion coefficient and increase of temperature of its vitrifying.

9 cl, 6 tbl, 9 ex