Patent ID: 6948612
Filing Date: 2005-09-27
Classification: C08G,C09D

Abstract:
1. A seamless conveying belt comprising a polyimide soluble in organic solvents, wherein said polyimide is a compound of the formula (I): wherein R's represent independently from one another a hydrogen atom, a halogen atom, a C A is a C 6 -C 20 tetravalent aromatic group or a group of the formula (II): wherein B is a covalent bond, a >C(R aryl group, and R Ar is a monocyclic or polycyclic C wherein Ar and B are the same as defined above, and each p is an integer of 0 to 10; m is an integer of 1 to 10, and said polyimide has a weight average molecular weight of 150,000 to 1,000,000 in terms of a polystyrene molecular weight measured with gel permeation chromatography.