HYDROSILICONE RESIN AND PREPARATION PROCESS THEREOF

• Main Authors: LETICIA BORQUE, WENJUAN TAN, ZHIMING LI, LIWEI ZHANG, YONG ZHANG, WENTAO XING, THOMAS PLANTENBERG
• Format: Patent
• Language: English
• Published: 31.03.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

THE PRESENT INVENTION RELATES TO A LIQUID HYDROSILICONE RESIN AND A PREPARATION PROCESS THEREOF. THE AVERAGE COMPOSITION OF THE LIQUID HYDROSILICONE RESIN IS REPRESENTED BY THE FOLLOWING FORMULA: (R¹R²R³SiO1/2)M'(R⁴R⁵SiO2/2)D'(R⁶SiO3/2)T'(SIO4/2)Q WHEREIN R¹ TO R⁶ ARE IDENTICAL OR DIFFERENT RADICALS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF ORGANIC GROUPS AND A HYDROGEN ATOM, WITH THE PROVISO THAT AT LEAST ONE OF R¹ TO R⁶ IS A HYDROGEN ATOM BONDED DIRECTLY TO A SILICON ATOM, AND M, T, AND Q EACH REPRESENT A NUMBER RANGING FROM 0 TO LESS THAN 1, D REPRESENTS A NUMBER LARGER THAN 0 AND LESS THAN 1, M+D+T+Q = 1, AND T+Q>0 SAID RESIN HAVING AN AVERAGE OF AT LEAST TWO HYDROGEN ATOMS BONDED DIRECTLY TO A SILICON ATOM PER MOLECULE AND A WEIGHT-AVERAGE MOLECULAR WEIGHT OF 10,000-300,000 g/MOL. THE LIQUID HYDROSILICONE RESIN IS OBTAINED BY DISPERSING A HYDROSILICONE OIL, A HYDROXYL SILICONE RESIN AND A DEHYDROGENATION CATALYST IN A SOLVENT TO FORM A DISPERSION, ALLOWING THE DISPERSION TO REACT, AND THEN REMOVING THE SOLVENT AND THE CATALYST. THE LIQUID HYDROSILICONE RESIN OF THE INSTANT INVENTION HAS NUMEROUS USES.