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Cationic curable composition

A cationic and cationic polymerization technology, which is applied in the cross field of chemistry and optoelectronics, can solve the problems of high viscosity of photocurable compositions, difficult to implement strong acid curing, easy yellowing application scenarios, etc.

Active Publication Date: 2022-04-12
CHANGZHOU ZHENGJIE INTELLIGENT MFG TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is mainly to provide a cationic curable composition to solve the problems that the existing strong acid curing is difficult to implement, and the photocurable composition has high viscosity, easy yellowing and limited application scenarios

Method used

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with specific examples, but they should not be construed as limiting the protection scope of the present invention.

[0041] 1. Evaluation of basic performance of curable composition

[0042] According to the formulation shown in Table 1, all components were mixed uniformly to obtain a curable composition. The quantities stated in each embodiment are parts by weight.

[0043] Table 1

[0044]

[0045]

[0046] 1. Viscosity

[0047] The viscosity of the curable composition at 25° C. was tested with a viscometer (DV-1).

[0048] 2. Curing time

[0049] The curable composition was applied to a tinplate substrate using a 15 μm wire bar to form a coating approximately 10 μm thick. The samples were then placed in an oven at 80°C, and the minimum time required for the coating to dry to the touch was recorded. The shorter the time, the faster the curing speed.

[0050] 3. Hardness

[00...

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Abstract

The invention discloses a cationic curable composition. The cationic curable composition comprises a cationically polymerizable compound, a superacid and water. The composition can solve the problems that existing strong acid curing is difficult to implement, and a photocuring composition is high in viscosity, prone to yellowing and limited in application scene.

Description

technical field [0001] The invention belongs to the field of chemical and optoelectronic intersecting technologies, and in particular relates to a cationic curable composition. Background technique [0002] Cationic polymerization mainly uses catalysts to promote the start of chains, and the initiators used are electrophiles, mainly protonic acids, Lewis acids, etc. As a kind of protonic acid, although superacid has strong acidity, large dissociation constant, high activity and fast initiation speed, the counter anion generated has weak nucleophilicity, and it is difficult to form a covalent bond with the active center of the growing chain to terminate the reaction. The limited selectivity of monomers greatly limits their applications. [0003] In recent years, cationic photopolymerization has developed rapidly, which has the advantages of not being affected by oxygen and small volume shrinkage. However, cationic radicals are unstable and photopolymerization conditions are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/22C09D163/00
CPCC08G65/22C09D163/00C08G59/68C08G65/18C09D1/00
Inventor 严春霞
Owner CHANGZHOU ZHENGJIE INTELLIGENT MFG TECH CO LTD
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