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US 11,453,738 B2Granted
Organic-inorganic hybrid material, fabrication process of the same and its starting material
AssigneeChanda Chemical Corp.
InventorsSheng-hong A. Dai, Chien-Hsin Wu, Ying-Chi Huang, Yu-Hsiang Huang, Shih-Chieh Yeh, Ru-Jong Jeng, Jau-Hsiang Yang
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Abstract
An organic-inorganic hybrid material is disclosure. The organic inorganic hybrid material contains 5˜50 wt % of inorganic compounds and has a characteristic peak at 1050±50 cm−1 in FTIR spectrum. Furthermore, the invention also provides a fabricating process of the organic-inorganic hybrid material as well as its starting material “isocyanates”. In particular, the isocyanates are prepared from carbonate containing compounds and amines.
Claims3
A method for preparation of isocyanates from carbonate containing compounds, comprising:
- (1) providing a mixture consisting of a carbonate containing compound, an amine compound, and a solvent, wherein the carbonate containing compound is polycarbonate, and wherein the amine compound is selected from the group consisting of benzylamine, ethylamine, phenethylamine, propylamine, 3-phenylpropylamine, butylamine, 4-phenylbutylamine, pentylamine, 5-phenylpentylamine, hexylamine, 6-phenylhexylamine, isobutylamine, aminoethylpiperazine, 1-methylpiperazine, 3-morpholinopropylamine, (3-aminopropyl)triethoxysilane, and (3-aminopropyl)trimethoxysilane;
- and
- (2) performing a converting process to have the polycarbonate react with the amine compound to produce isocyanates, wherein the converting process comprises a first heating stage and a second heating stage, wherein the first heating stage operates at temperature between 40 and 150° C., and the second heating stage operates at temperature between 100 and 250° C. under vacuum.
Dependencies are inferred from the claim text.