Synthesis and Structure of the Bidimensional Zeolite ITQ-32 with Small and Large Pores
摘要:
A new bidimensional zeolite containing 8R and 12R pores, denoted as ITQ-32, has been synthesized and its structure solved from powder X-ray diffraction data. This zeolite presents a relatively large pore volume (0.16 cm3/g) and pore apertures of 3.5 x 4.3 A and can be prepared as a nearly pure silica zeolite and as aluminosilicate. In the latest case, acidic properties are developed.
METHOD FOR PREPARING A POLY(ETHER SULFONIMIDE OR -AMIDE) COPOLYMER USING CYCLIC OLIGOMERS
申请人:Kim Yong Seok
公开号:US20130053530A1
公开(公告)日:2013-02-28
Disclosed is a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer using cyclic oligomers, and more particularly, to a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer by preparing a cyclic ether sulfone oligomer and a cyclic imide or amide oligomer and subjecting the cyclic ether sulfone oligomer and the cyclic imide or amide oligomer to ring-opening copolymerization in the presence of an alkali metal fluoride catalyst.
Polymers for use as alignment layers in liquid crystal devices
申请人:Komitov Lachezar
公开号:US20070088125A1
公开(公告)日:2007-04-19
The invention relates to a polymer for use as a surface-director alignment layer in a liquid crystal device, the polymer comprising a polymeric backbone and side-chains attached thereto, wherein the polymeric backbone lacks directly coupled ring structures, and each side-chain of at least some of the side-chains comprises at least two unsubstituted and/or substituted phenyls coupled via a coupling selected from the group consisting of a carbon-carbon single bond (—), a carbon-carbon double bond containing unit (—CH═CH—), a carbon-carbon triple bond containing unit (—C≡C—), a methylene ether unit (—CH
2
O—), an ethylene ether unit (—CH
2
CH
2
O—), an ester unit (—COO—) and an azo unit (—N═N—), exhibits a permanent and/or induced dipole moment that in ordered phase provides dielectric anisotropy, and is attached to the polymeric backbone via at least two spacing atoms.
Liquid crystal display and manufacturing method thereof
申请人:Samsung Display Co., Ltd.
公开号:US10197865B2
公开(公告)日:2019-02-05
A manufacturing method of a liquid crystal display, including: applying a photoalignment agent on a substrate; baking the applied photoalignment agent; forming a photoalignment layer by irradiating the baked photoalignment agent with polarized light; baking the photoalignment layer; and removing at least one decomposed unit by cleaning the baked photoalignment layer using a cleaning solution including at least one of propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, or ethyl lactate.
Quantum rod layer, method of fabricating the same and display device including the same
申请人:LG DISPLAY CO., LTD.
公开号:US10795207B2
公开(公告)日:2020-10-06
An example of the present invention provides a quantum rod layer including: a photo-induced polymer including a base polymer aligned along a first direction and a photo-reactive group combined to the base polymer; and a quantum rod aligned along the first direction.
Photoalignment agent and liquid crystal display device including the same
申请人:Samsung Display Co., Ltd.
公开号:US11029568B2
公开(公告)日:2021-06-08
A photoalignment agent is provided. The photoalignment agent includes a copolymer of ii) at least one of a cyclobutanedianhydride (CBDA) and a cyclobutanedianhydride (CBDA) derivative, and ii) a diamine, and the diamine includes an electron donor group.