Industrial Technology Research Institute

Wisertek International Corporation

Hung-Chou Kang

Meng-Song Yin

Chien-Ting Lin

Kung-Lung Cheng

Shin-Shin Wang

Jui-Hsiang Chen

Chen-Hua Lin

Ji-Chen Wu

Jie-Hwa Ma

Kuo-Yuan Hsu

Se-Tsun Hong

Yuan-Der Wu

Ru-Fong Laiw

Chin-Jiuh Kang

A process for preparing an epoxy group-containing curable polyphenylene ether (PPE) resin. The process involves introducing an epoxy group-containing functional group to the terminal end of PPE (Mn>3000) by modifying the hydroxy and ester groups on the terminal end. Thus, a curable PPE resin (Mn>3000) including an epoxy group on the terminal end can be obtained. The modified PPE resin contains epoxy groups and has high glass transition temperature.

Process for preparing epoxy group-containing curable polyphenylene ether resin using high-molecular-weight polyphenylene resin

A method according to the invention comprises the following steps. At first, a first layer of film is coated over a micro-control apparatus having a plurality of ejecting elements. Next, a plurality of ink chambers, a plurality of ink channels, and a plurality of supporting cylinders are simultaneously formed in the first layer of film by photolithography. More specifically, the plurality of supporting cylinders is located within the plurality of ink channels. Thereafter, a layer of liquid medium is coated over the first layer of film. A photosensitive film is provided over the first layer of film, and then a plurality of ink orifices is formed therein at positions respectively corresponding to the plurality of ink chambers by photolithography. Finally, the micro-control apparatus is connected to a signal input means. Accordingly, a precision alignment of application between ink orifices and ink chambers in manufacturing a conventional printhead is not necessary so that the throughput and yield rate can be increased.

Method for manufacturing a printhead of ink jet printing apparatus

A triazine compound having formula I or formula II:

Triazine hardener and epoxy composition containing the same

A pultrusion processing method for long fiber-reinforced nylon which combines the nylon anionic ring-opening polymerization technology and the pultrusion processing method to manufacture long fiber-reinforced thermoplastic nylon composites. The method comprises the steps of forming an active caprolactam sodium salt catalyst composition by reacting melt nylon 6 monomer raw material, i.e., caprolactum, with sodium hydride, forming co-catalyst composition by melting caprolactam and a polymeric co-catalyst, then mixing the active caprolactum sodium salt catalyst composition and the co-catalyst composition in a continuous mixing device to obtain a reaction mixture with low viscosity. The mixture is then charged into a closed impregnating tank to impregnate preheated and dried reinforced fiber, which is immediately pulled into a hot mold for composite molding processing to form a finished product of long fiber-reinforced nylon composites.

Pultrusion process for long fiber-reinforced nylon composites

Growing community of inventors

Hsinchu, Taiwan

Hung-Chou Kang