Liquid crystal oligomer, synthesis composition, preparation method thereof, and liquid crystal material
AssigneesBeijing Boe Display Technology Co., Ltd., Boe Technology Group Co., Ltd.
InventorsWei YAN, Dan WANG
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Abstract
The disclosed technology provides a liquid crystal oligomer, a synthesis composition, a preparation method thereof, and a liquid crystal material. The liquid crystal oligomer is represented by the following chemical formula, wherein substituent R is hydrogen or methyl. In addition to a higher glass transition temperature, good heat resistance, low viscosity and a self-crosslinkable group, the liquid crystal oligomer has thermal self-crosslinking and high thermal stability of thermosetting materials.
Claims11
A self-crosslinkable liquid crystal oligomer, which is represented by the following chemical formula:
- wherein the substituent R is hydrogen or methyl.
A method for preparing a self-crosslinkable liquid crystal oligomer, comprising:
- adding 4,4′-dihydroxybiphenyl or 3,3′-dimethyl-4,4′-dihydroxybiphenyl into an organic solvent while adding an alkali metal catalyst,
- allowing azeotropic distillation under the protection of a non-reactive gas for 2 to 3 hours,
- introducing 4-fluoro-4′-phenylethynyl benzophenone capping agent to continue for 2 to 4 hours, and
- discharging the resulting phenylacetylene terminated liquid crystal oligomer in an acidic aqueous solution, thereby after washing and drying obtaining the self-crosslinkable liquid crystal oligomer in a powder form.
A liquid crystal material, wherein the liquid crystal material is formed from a self-crosslinkable liquid crystal oligomer, which is represented in the following chemical formula:
- wherein the substituent R is hydrogen or methyl;
- or
- a liquid crystal synthesis composition comprising:
- 4-fluoro-4′-phenylethynyl benzophenone capping agent, 4,4′-dihydroxybiphenyl or 3,3′-dimethyl-4,4′-dihydroxybiphenyl, an alkali metal catalyst, and solvent.
Dependencies are inferred from the claim text.