SILICONE IMPACT MODIFIER WITH HIGH REFRACTIVE INDEX AND METHOD FOR PREPARING THE SAME

• Main Authors: LEE, HAN SU, MIN, SUNG SIG, LEE, BYUNG CHOON, LEE, BYEONG DO
• Format: Patent
• Language: English; French
• Published: 06.07.2006
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The silicone impact modifierwith high refractive indexaccording to the present invention comprises (A) a rubber core consisting of (a ) an organosiloxane cross-linked (co)polymer with a particle size of 50-400 nm and (a ) an alkylacrylate-styrene aromatic compound cross-linked copolymer; and (B) a plastic shell consisting of a vinyl (co)polymer. The refractive indexof the silicone impact modifier of the present invention is 1.49-1.59. L'agent antichoc en silicone à indice de réfraction élevé de la présente invention comprend (A) un centre de caoutchouc constitué (a) d'un (co)polymère réticulé d'organosiloxane avec une dimension de particules allant de 50 à 400 nm et (b) d'un copolymère réticulé d'un composé aromatique d'alkylacrylate-styrène ; et (B) une enveloppe en plastique constituée d'un (co)polymère de vinyle. L'indice de réfraction de l'agent antichoc en silicone de la présente invention varie de 1,49 à 1,59.