摘要:
An alternating copolymer comprising a repeating unit of the formula:--Z--(X-Y).sub.n -- (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
A heat storage material comprises a sodium acetate-water system containing at least 53-69% by weight sodium acetate (CH.sub.3 CO.sub.2 Na), wherein said heat storage material is mixed with a thickener comprising polyvinyl alcohol, paraffin and one or two components selected from the group consisting of formaldehyde and acetone, and has stable performance and little change of heat storage capacity even under repeated storage and release of heat.
摘要翻译:储热材料包括含有至少53-69%(重量)乙酸钠(CH 3 CO 2 Na)的乙酸钠 - 水体系,其中所述蓄热材料与包含聚乙烯醇,石蜡和一种或两种选自以下组分的组分的增稠剂混合 由甲醛和丙酮组成,即使在反复的储存和释放热下也具有稳定的性能和储存能力的变化。
摘要:
An alternating copolymer comprising a repeating unit of the formula:--Z--(X--Y).sub.n-- (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
An alternating copolymer comprising a repeating unit of the formula:--Z--(X--Y).sub.n -- (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
An alternating copolymer comprising a repeating unit of the formula:-Z-(X-Y).sub.n - (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
摘要:
A projection type liquid crystal display device for transmitting three color light beams of RGB through three TN type liquid crystal panels and projecting the transmitted light beams optimizes the RGB transmission characteristics by changing the crossing angles of the polarization axes of a polarizer and an analyzer with respect to the orientation directions of the respective RGB TN cells in specified directions, and also a projection type liquid crystal display device for transmitting a light beam through a TN type liquid crystal panel and projecting the transmitted light beam effects temperature-compensation of the transmission characteristics of the liquid crystal panels by controlling the crossing angle of the polarization axes of a polarizer and an analyzer. Both projection type liquid crystal display devices are relatively simple in the construction, are able to optimize the transmission characteristics of the liquid crystal panels, and have excellent properties in the contrast and in the color reproducibility.
摘要:
A heat storage material comprising a system consisting of sodium acetate and water incorporated with a fluorine ion-containing salt which is in solid state at the crystallizing temperature of sodium acetate trihydrate, as a nucleating agent for sodium acetate trihydrate.