Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1993-05-28
1994-03-01
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528128, 528170, 528172, 528173, 528176, 528183, 528185, 528188, 528189, 528220, 528229, 528350, C08G 6926, C08G 7310
Patent
active
052909093
ABSTRACT:
A polyimide composition for use in making polyimide/copper foil laminate that does not require an adhesive layer between the polyimide substrate and the copper foil. A polyimide precursor is first prepared from a monomer composition, which comprises a dianhydride and an imidazole-containing or benzimidazole-containing compound, or mixture thereof The polyimide precursor is then coated onto a copper foil and subsequently subject to an imidization reaction to form a polyimide/copper foil laminate, which exhibits excellent peel strength and flatness while retaining all the advantageous properties that are characteristic of polyimide resins, such as excellent mechanical strength and heat and chemical resistance. Because the polyimide/copper foil laminates disclosed in the present invention are made without the need to apply an adhesive layer, the process of manufacturing the same is greatly simplified and the cost of production therefor can be substantially reduced. Furthermore, many of the problems caused by the inferior chemical and/or physical properties of the adhesive layer are completely eliminated.
REFERENCES:
patent: 3247165 (1966-04-01), Rodia
patent: 5077084 (1991-12-01), Konotsune et al.
Chen Han L.
Ho Syh-Ming
Pan Jing-Pin
Wang Tsung H.
Hampton-Hightower P.
Industrial Technology Research Institute
Kight III John
Liauh W. Wayne
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