Industrial Technology Research Institute

Charng-Shing Lu

Jinn-Shing King

Shu-Chu Shih

Shur-Fen Liu

Jing-Pin Pan

Chih-Chiang Chen

Li-Ming Chang

Jeng-Yu Tsai

Jyh-Long Jeng

Si-Yi Chin

Additives of a polyamic acid resin composition are disclosed, including an ester-phenol compound, an imidazole compound, and a heterocyclic aromatic amine compound other than the imidazole compound. The high cyclization temperature and long cyclization period of conventional polyamic acid resin compositions can be lowered and shorten by the additives of the invention. In addition, a metal foil and the polyimide resin formed from the cyclization have excellent adhesive strength, high flat degree, and excellent electrical property.

Polyamic acid resin composition and method for forming polyimide resin

The disclosure provides a polyimide film laminate and a metal clad laminate employing the same. The polyimide film laminate includes a first polyimide film, a second polyimide film disposed on the first polyimide film, and a third polyimide film disposed on the second polyimide film. Particularly, the first polyimide film has a thermal conductivity of between about 0.2-0.9 watts/m&#xb7;K and a breakdown voltage greater than about 3KV, the second polyimide film has a thermal conductivity of more than about 1 watts/m&#xb7;K, and the third polyimide film has a thermal conductivity of between about 0.2-0.9 watts/m&#xb7;K and a breakdown voltage greater than about 3KV.

Polyimide film laminate and metal laminate employing the same

The invention discloses double-sided metal clad laminates and fabrication methods thereof. A plurality of polyamic acid coatings is co-extruded on a first metal foil and heat imidization to provide a multilayer polyimide film. A second metal foil is hot pressed on the multilayer polyimide film, thus providing a double-sided metal clad laminate. The polyamic acid coatings include a first, a second, and a third polyamic acid coating with surface tensions of S1, S2, and S3, respectively, satisfying relations of S1&#x3e;S2&#x3e;S3, wherein the first polyamic acid coating is the coating directly applied on the first metal foil.

Double-sided metal clad laminate and fabrication method thereof

A thermoplastic polyimide composition, comprising a silane-modified polyimide (A); and a polar solvent (B), wherein the silane-modified polyimide (A) is obtained by reacting a polyimide (a) and an epoxy-containing silane (b). The polyimide (a) contains repeating units represented by the general formulae I and II, wherein the molar fraction of the repeating unit of formula II is at least 10%, X represents a quadrivalent aromatic group, Arrepresents a bivalent aromatic group, and Arrepresents a bivalent aromatic group containing an OH or COOH group. 

Thermoplastic polyimide composition

The present invention is directed to a negative photoresist composition which mainly is composed of a) a polyimide having pendant carboxyl groups, wherein a portion of the carboxyl groups reacted with glycidyl (meth)acrylate monomers to form covalent bonds. The photoresist composition further contains b) monomers having a tertiary amino group and a C&#x2550;C double bond, which form ionic bonds with the remaining hydroxyl groups of the polyimide. The photoresist composition further contains c) a photoinitiator which is also called photosensitizer. The components a) to c) are all dissolved in a solvent.

Negative photoresist composition

The present invention relates to ink jet recording materials and method for making the same. The material has a gel layer formed on a base material to improve the optical density of the material and improve the printing quality of ink of pigment type. The method for forming the gel layer is to coat a first ink-receptive layer composed of high valance metallic halide, such as calcium chloride (CaCl ) or magnesium chloride (MgCl ), on the base layer, then a second ink-receptive layer composed of alginate, such as sodium alginate, potassium alginate or other compounds of alginic acid, on the first ink-receptive layer. The second and the first ink-receptive layers will react to form a gel layer during coating for absorbing ink dots and improving print quality.

Ink jet recording materials

An ink jet printing medium is disclosed. It contains (a) a substrate; (b) an ink absorption layer; and (c) a reinforcement layer sandwiched between said substrate and said ink absorption layer. The reinforcement layer, which is provided at a thickness about 5% to 100% of a thickness of said ink absorption layer, comprises: (a) a carboxylated acrylonitrile rubber at about 7 to 25 wt %; (b) an epoxy resin containing at least two epoxy groups, about 45 to 70 wt %; (c) a hardener containing at least two functional groups, provided at an equivalent ratio of between about 0.9 and 1.1 relative to said epoxy resin; and (d) a catalyst. The inkjet printing medium exhibits excellent adhesion between the ink absorption medium and the substrate, and improved water resistance without affecting printing quality.

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Hsinchu, Taiwan

Charng-Shing Lu