17295-26-0Relevant articles and documents
Synthesis and Curing Behaviors of Cross-Linkable Polynaphthols from Renewable Resources: Preparation of Artificial Urushi
Tsujimoto, Takashi,Uyama, Hiroshi,Kobayashi, Shiro
, p. 1777 - 1782 (2004)
This paper describes the synthesis and curing of cross-linkable polynaphthols from renewable resources. Naphthol monomers bearing an unsaturated group from renewable triglyceride oils were designed and oxidatively polymerized to produce new cross-linkable precursor polymers. The monomers were prepared by acylation of hydroxynaphthoic acids with unsaturated alcohols, obtained by reduction of natural oils. The oxidative polymerization was carried out by Fe-salen catalyst to give soluble polynaphthols. NMR analysis showed that the naphthol moiety was chemoselectively reacted during the polymerization, yielding the polymers possessing the unsaturated group in the side chain. The resulting polymers were readily cured by thermal treatment or cobalt naphthenate catalyst to give the cross-linked film ("artificial urushi") with high hardness and gloss surface.
Production device of liquid crystal polymer precursor acetylated monomer
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Paragraph 0096-0101, (2021/03/24)
The utility model provides a production device of a liquid crystal polymer precursor acetylated monomer, which comprises a raw material dissolving tank, a micro-mixer, a micro-channel reactor and a receiving system which are sequentially communicated through pipelines along the material flow direction. By adopting the microchannel reactor, the heat exchange capability of the reactor in the reaction process is enhanced, the defect of large temperature fluctuation of the phenolic hydroxyl-containing aromatic compound in the acetylation reaction process by adopting the traditional method is overcome, the high selectivity of the reaction is realized by accurately controlling the temperature, the generation of by-products is reduced, and the production cost is reduced. The purity of the monomeris improved, a high-purity polymerized monomer is provided for the subsequent melt polycondensation reaction, and the performance of the liquid crystal polymer prepared by the polycondensation reaction is greatly improved.
COATING COMPOSITIONS SUITABLE FOR USE WITH AN OVERCOATED PHOTORESIST
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, (2011/01/12)
In one aspect, organic coating compositions, particularly antireflective coating compositions, are provided that comprise that comprise a diene/dienophile reaction product. In another aspect, organic coating compositions, particularly antireflective coating compositions, are provided that comprise a component comprising a hydroxyl-naphthoic group, such as a 6-hydroxy-2-naphthoic group Preferred compositions of the invention are useful to reduce reflection of exposing radiation from a substrate back into an overcoated photoresist layer and/or function as a planarizing, conformal or via-fill layer.
