Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takeshi Nishikawa0
Date of Patent
April 12, 2011
Patent Application Number
11910525
Date Filed
April 3, 2006
Patent Primary Examiner
Patent abstract
Provided is a novel silicone copolymer which exhibits high absorption even in a far-ultraviolet region of 200 nm or more, and also is soluble in an alkaline reagent since it has a phenolic hydroxyl group. The silicone copolymer comprises a silsesquioxane having a phenol unit and comprises a silsesquioxane having a condensed polycyclic hydrocarbon.
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