Patent ID: 6770685
Filing Date: 2004-08-03
Classification: C08F,C08G,C08L,C09D

Abstract:
A resin composition for manufacturing optical fiber ribbon comprisinga) a photopolymerizable urethane acrylate oligomer containing polydimethylsiloxane; b) a monomer; c) a photoinitiator; d) a leveling/defoaming agent; and e) an antioxidant; wherein the photopolymerizable urethane acrylate oligomer containing polydimethylsiloxane is synthesized from a composition comprising i) a first polyol compound containing polydimethylsiloxane and selected from the group consisting of hydroxy-terminated polydimethylsiloxane, 1,3-bis(hydroxybutyl)tetramethyldisiloxane, 1,4-bis(hydroxypropyl)tetramethyldisiloxane, and a mixture thereof, ii) a second polyol compound, iii) a polyisocyanate, iv) an acrylate alcohol, v) a urethane reaction catalyst, and vi) a polymerization inhibitor, wherein the first polyol compound containing polydimethylsiloxane is in an amount of 5 to 25 weight % of the photopolymerizable urethane acrylate oligomer composition; and the second polyol compound has a molecular weight of 100 to 10,000; is selected from the group consisting of polyester polyol, polycarbonate polyol, polycaprolactone polyol, tetrahydrofuran propyleneoxide ring opening copolymer, ethylene glycol, propylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, 1,4-cyclohexane dimethanol, bisphenol A, bisphenol F diol, and a mixture thereof; and comprises 5 to 30 weight % of the photopolymerizable urethane acrylate oligomer composition.