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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 4. Отображено 4.
09-05-2023 дата публикации

Polycarbonate and preparation method thereof

Номер: CN116096781A
Принадлежит:

The present invention relates to a polycarbonate having excellent mechanical properties and excellent flame retardancy, heat resistance, hardness and impact resistance, and a method for preparing the same, the polycarbonate comprising: a diol compound represented by chemical formula 1; at least one compound among compounds represented by Chemical Formula 2 and Chemical Formula 3; and a repeating unit derived from the carbonate precursor.

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22-08-2023 дата публикации

Polycarbonate and preparation method thereof

Номер: CN116635451A
Принадлежит:

The present application relates to a polycarbonate comprising units represented by Chemical Formula 1a or 1b and Chemical Formula 1c, a composition comprising the polycarbonate, and a molded article prepared from the composition.

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02-05-2023 дата публикации

Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same

Номер: CN116057429A
Принадлежит:

Disclosed is a monoazo dichroic dye compound represented by the following Chemical Formula 1. In Chemical Formula 1, Z represents any one selected from the group consisting of CN, COOR11, indanone, and 1, 3-dioxoindane, where R11 is any one selected from the group consisting of an alkyl group, an aryl group, and a substituted or unsubstituted heteroaryl group. The monoazo dichroic dye compound exhibits excellent dichroic characteristics, and has excellent heat resistance and light resistance, and thus can be advantageously used in a dye-based polarizing plate. [Chemical Formula 1] ...

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26-05-2023 дата публикации

Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same

Номер: CN116171394A
Принадлежит:

Disclosed is a monoazo dichroic dye compound represented by the following Chemical Formula 1. In Chemical Formula 1, R3 represents a substituted or unsubstituted heterocyclic group having 1 to 20 carbon atoms. The monoazo dichroic dye compound exhibits excellent dichroic characteristics, and has excellent heat resistance and light resistance, and thus can be advantageously used in a dye-based polarizing plate. [Chemical Formula 1] ...

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