Industrial Technology Research Institute

Shu-Chu Shih

Charng-Shing Lu

Jing-Pin Pan

Jinn-Shing King

Chih-Chiang Chen

Shur-Fen Liu

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 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.

Growing community of inventors

Hsinchu, Taiwan

Shu-Chu Shih