OPTICAL PLASTIC FIBER, OPTICAL FIBER CABLE, OPTICAL FIBER CABLE WITH A CONNECTOR, PROCEDURE FOR THE MANUFACTURE OF A METHYL METHYLLATE POLYMER AND PROCEDURE FOR THE MANUFACTURE OF A PLASTIC OPTICAL FIBER.

摘要

Process for the manufacture of a (co) methacrylate polymer which comprises carrying out the polymerization while supplying a monomer (mixture) containing at least 90% by weight in total of at least one methacrylate monomer and an initiator of the radical polymerization represented by formula (II) to a reactor, in which the concentration of the initiator and the polymerization temperature satisfy a ratio represented by equations (1) to (4) and the polymerization temperature is not less than 110 ° C and not exceeding 160 ° C; ln (A) 105, 4 ¿45126 / B (1) ln (A) 2545, 2 / B ¿15, 82 (2) ln (A) 225, 9 ¿102168, 8 / B (3) ln (A) 1300, 0 / B ¿15, 74 (4) in which A is an initiator concentration (a molar ratio of the initiator / monomer); B is a polymerization temperature (ºK); and ln is a symbol for a natural logarithm; wherein R is alkyl or fluoroalkyl.