POLYIMIDE AND OPTICAL PART USING THE SAME

• Main Author: YAMAGISHI TOMOAKI
• Format: Patent
• Language: English
• Published: 26.03.1999
• Edition: 6
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To obtain a polyimide that has a small optical birefringence and is useful as an optical transmission material for optical parts by using a specific diamine as a part or the whole part of the diamine component. SOLUTION: This polyimide is obtained by allowing (A) a tetra-carbox...