China Petrochemical Development Corporation

Lite-on Technology Corporation

Lite-on Electronics (guangzhou) Limited

Chia-Jung Tsai

Chih-Wei Chang

Han-Ming Lee

Ching-Tang Fu

Chin-Yi Lee

Jui-Tsung Hung

Min-Sheng Chen

Ying-Tien Chen

Chi-He Chen

Hsi-Chin Tsai

Yao-Lung Liu

Disclosed is a light-emitting module, comprising: a circuit board, a conductive layer, a light-emitting device, and an adhesive material. The circuit board comprises a device-attachment area, the conductive layer being disposed on the device-attachment area, the light-emitting device being disposed on the conductive layer and electrically connected to the circuit board through the conductive layer, and the adhesive layer being used for connecting the light-emitting device to the circuit board, wherein a curing temperature of the adhesive layer is lower than a melting point of the conductive layer. Adopting the aforementioned technical means, the degree of offset in the position of the light-emitting device after reflow soldering can be greatly reduced. In addition, a vehicle lamp device using the light-emitting module is also provided.

Light-emitting module for vehicle lamp

A method of oxidizing hydrocarbons in liquid phase is provided. According to this method, a liquid-phase oxidation reaction of hydrocarbons is carried out by using an organic compound capable of chelating metals as auxiliary agent, represented by formula (II), in the presence of an oxygen-containing gas and a transition metal catalyst. Accordingly, the conversion degree of the hydrocarbon is increased, and the overall yields of products are improved while the selectivity of catalytic oxidation reaction is still high. 

Method for oxidizing hydrocarbons in liquid phase

A method for preparing organic carbonates comprising subjecting an alcohol compound to oxidative carbonylation in the presence of carbon monoxide, oxygen and a liquid-phase catalytic system, to form a organic carbonates, wherein the liquid-phase catalytic system includes at least one catalyst, at least one additive and at least one ionic liquid composed of a cation, which has a nitrogen-containing heterocyclic structure, and an anion. Through using the additive and the ionic liquid, the activity and the performance of the catalyst are enhanced, and increased reaction rate and yield can be obtained.

Method for preparing organic carbonates

Provided is a process for preparation of dialkyl carbonates, comprising the step of performing oxidative carbonylation of an alcohol in liquid phase in the presence of CO and O, to form dialkyl carbonate in a catalyst system comprising a metal halide as catalyst and at least one nitrogen-containing compound selected from the group consisting of imidazole derivatives (excluding unsubstituted imidazole), benzoimidazole derivatives, pyridazine derivatives, carbazole, acridine and non-cyclic amines as auxiliary catalyst. The process of the invention, by using above catalyst system, can increase the conversion ratio of alcohol and the selectivity of the oxidative carbonylation reaction, thus increasing the total yield of dialkyl carbonate. In addition, the process of the invention has the advantages of reducing the required amount of the catalyst and causing less corrosion to the reactor.

Process for preparation of dialkyl carbonate

A process for preparing a carboxylic acid by the carbonylation of an alcohol in a reaction medium is provided. The reaction medium includes a catalyst promoter having a metal species selected form the group consisting of group IIIA-IVA metals, group IB-VIIIB metals and lanthanides, together with a hydrohalic acid to prevent catalyst precipitation and to maintain high reaction rates in case of low water content.

Process for preparing carboxylic acid

The invention relates to a polymer-supported carbonylation catalyst and its use in a process for preparing organic carboxylic acid or anhydride having n&plus;1 carbon atoms. The invention relates also to a process for preparing organic carboxylic acid or anhydride having n&plus;1 carbon atoms by carbonylating with monoxide, in the presence of the above-mentioned carbonylation catalyst, on alcohols having n carbon atoms, ethers having 2n carbon atoms or esters formed from said alcohols and acids. In particular, the invention relates to a process for preparing acetic acid by carbonylating methanol with carbon monooxide in the presence of said carbonylation catalyst. By using said carbonylation catalyst, the temperature for carbonylation can be lowered to about 160&deg; C. with a reaction rate better than that of a traditional process, while the tendency of catalyst precipitation in the course of carbonylation can be improved also. The process can be operated normally as the concentration of rhodium increased to up to several thousand ppm. Further, a comparable reaction rate can be achieved in the absence of water and hydroiodic acid, whereby the corrosion problem of the equipment and promotion of production capacity can be improved significantly.

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Taipei, Taiwan

Chia-Jung Tsai