Acetoxy functional copolymers composed of monomethylsiloxane units and diphenylsiloxane units
Abstract
Abstract ACETOXYMONOMETHYLSILOXANE - DIPHENYLSILOXANE COPOLYMERS OF CH3-SI(-OOC-CH3)-O UNITS, CH3SIO1.5 UNITS, (C6H5)2SIO UNITS AND CH3-SI(-OOC-CH3)2-(O)(0.5) UNITS WHERE THE (C6H5)2SIO UNITS ARE BONDED TO CH3-SI(-OOC-CH3)-O UNITS, CH3SIO1.5 UNITS OR CH3-SI(-OOC-CH3)2-(O)(0.5) UNITS, 15 TO 46 WEIGHT PERCENT OF THE COPOLYMER IS CH3-COO AND 25 TO 50 MOL PERCENT OF THE SILOXANE UNITS ARE (C6H5)2SIO UNITS IS DISCLOSED. ALSO DISCLOSED ARE MODIFIED ACETOXYMONOMETHYLSILOXANE-DIPHENYLSILOXANE COPOLYMERS WHEREIN MOLECULES OF THE COPOLYMER ARE LINKED TOGETHER BY SEGMENTS OF THE FORMULA -O-SI(-R2)-(O-SI(-R2))X-O-SI(-R2)-O- WHEREIN X IS AT LEAST 2 AND R IS METHYL, PHENYL OR 3,3,3TRIFLUOROPROPYL AND THE SEGMENTS BEING PRESENT IN AMOUNTS OF 1 TO 50 WEIGHT PERCENT. THE COPOLYMERS AND MODIFIED COPOLYMERS ARE USEFUL AS CROSS-LINKERS, INTERMEDIATES AND LAMINATING RESINS.
Inventors
- 👤 Robert C Antonen
Bibliographic Details
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