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Применить Всего найдено 2. Отображено 2.
08-08-2023 дата публикации

Method for preparing poly (p-hydroxystyrene) resin through emulsion polymerization process

Номер: CN116554374A
Автор: LIU BIN, QI SHANYUN, WU SHAOWEI, ZHANG LING, HUANG XIAOLEI, LI WEILI
Принадлежит:

The invention provides a method for preparing poly (p-hydroxystyrene) resin through an emulsion polymerization process. The method comprises the following steps: dissolving a surfactant mixture and an initiator in deionized water; dispersing the surfactant mixture, 4-methoxystyrene and a chain transfer agent in deionized water to obtain a pre-emulsified substance; controlling the temperature of the system to be 75-85 DEG C and the rotating speed to be 200-300r/min, and gradually dropwise adding the pre-emulsion; carrying out heat preservation reaction for 2-5 hours at the temperature of 80-85 DEG C and the rotating speed of 200-300r/min, and then cooling to obtain poly (4-methoxystyrene) latex; the poly (4-methoxystyrene) latex is purified twice and then baked and dried, and a purified poly (4-methoxystyrene) polymer is obtained; and carrying out deprotection on the poly (4-methoxystyrene) polymer to obtain the poly (p-hydroxystyrene) resin. The molecular weight and molecular weight distribution ...

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Номер записи: 1
11-08-2023 дата публикации

Preparation method and application of photosensitive resin with aggregation-induced emission effect

Номер: CN116574249A
Автор: LIU BIN, WU SHAOWEI, KWON KYONG-CHEOL, LI YAO, ZHANG LING, LI WEILI
Принадлежит:

The invention provides a preparation method and application of photosensitive resin with an aggregation-induced emission effect. The preparation method comprises the following steps: mixing and dissolving tetraphenylethylene with carboxyl and allyl polyethylene glycol in an organic solvent; adding a dehydrating agent into the system, dissolving and uniformly stirring; removing air from the reaction system, introducing nitrogen, and stirring at room temperature for 12-36 hours in a water-free and oxygen-free environment; after the reaction is finished, filtering to remove by-products generated by the dehydrating agent, and collecting the filtered product; and pouring the filtered product into a rotary evaporator, and removing the residual organic solvent in the system to obtain the photosensitive resin tetraphenyl vinyl-allyl polyethylene glycol ester. The preparation process is simple, by-products in the reaction process are easy to separate and remove, the introduced rigid groups can enhance ...

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Номер записи: 2