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US 8,802,804 B2Granted
Hydroxy-terminated siloxane, polysiloxane-polycarbonate copolymer, and preparation method thereof
AssigneeSamyang Corporation
InventorsSun Mi Kim, Jae Hyun Kim, Kyung Moo Shin, Sung Hwan Cho, Whan Gi Kim, Dong Wan Seo
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Abstract
Provided are a hydroxy-terminated siloxane, a polysiloxane-polycarbonate copolymer including same as a repeating unit, and a preparation method thereof. The hydroxyl-terminated siloxane has the structure of chemical formula 1.
Claims10
A hydroxy-terminated siloxane of the following chemical formula 1:
- wherein in the above chemical formula 1,
- R1 independently represents hydrogen atom, halogen atom, hydroxy group, alkyl group, alkoxy group or aryl group,
- R2 independently represents hydrocarbon group having a carbon number of 1 to 13 or hydroxy group,
- R3 independently represents alkylene group having a carbon number of 2 to 8,
- A is X or NH—X—NH, where X represents linear or branched aliphatic group having a carbon number of 1 to 20, cycloalkylene group, or mono- or polycyclic arylene group that has a carbon number of 6 to 30 and is unsubstituted or substituted with halogen atom, alkyl group, alkoxy group, aryl group or carboxy group,
- m independently represents an integer of 0 to 4, and
- n independently represents an integer of 2 to 1,000.
4 more elements
Dependencies are inferred from the claim text.