JP2004292801A5 - - Google Patents

Claims (13)

Based on the molecular weight of the compound (A) having an alicyclic group having no conjugated double bond and two or more crosslinkable groups, the total atomic weight of carbon constituting the alicyclic group is 30 to 80% by weight. An optical waveguide-forming compound (A), An optical waveguide forming composition comprising the compound according to claim 1. The composition according to claim 2, further comprising a surfactant (D). (D) is a copolymer comprising the compound represented by formula (I) and / or the fluorinated alkyl group-containing ethylenically unsaturated monomer (α) and the hydrophilic group-containing ethylenically unsaturated monomer (β) as essential constituent units. The composition according to claim 3, which is a polymer.

_{^{Rf 1 - (X 1) a}} - (C m H 2m O) k -Z (I)

(Wherein Rf ¹ is a linear or branched fluorinated alkyl group having 1 to 20 carbon atoms which may contain an oxygen atom in the main chain, X ¹ is a divalent linking group, and a is 0 or 1, m represents an integer of 1 to 4, k represents an integer of 1 to 100, Z represents H or an alkyl group having 1 to 6 carbon atoms.) The composition according to claim 4, wherein (D) is a copolymer having an alicyclic group and having (α) and (β) as essential constituent units. It consists of a combination of a core-forming composition (a) and a cladding-forming composition (b), wherein (a) and (b) contain the compound (A) according to claim 1, and (a) has a refractive index. The composition according to any one of claims 2 to 5, wherein the composition contains an improving monomer, and (b) does not contain a refractive index improving monomer or contains a refractive index reducing monomer. Resin for optical waveguides which consists of hardened | cured material of the composition in any one of Claims 2-6. An optical waveguide made of the resin according to claim 7. The optical waveguide according to claim 8, wherein the surface roughness of the interface between the core and the clad is 0.15 μm or less. It consists of a cured product of a curable resin, has a glass transition temperature of 150 ° C. or higher, a cured volume shrinkage of 7% or less, a water absorption of 0.5% or less, and a birefringence of 1 × 10 ⁻⁴ or less. An optical waveguide. The optical waveguide according to any one of claims 8 to 10, wherein a difference in propagation loss before and after the test of the wet heat test at 75 ° C x 90% RH for 5,156 hours is 0.2 dB / cm or less. A device, an optical integrated circuit, or an optical printed wiring board using the optical waveguide according to claim 8. A method for producing an optical waveguide, comprising molding the composition according to claim 2 using a mold.