Optical fiber with epoxidized polyolefin based coating

An optical fiber comprising at least one epoxidized polyolefin based polymer coating, said coating being formed from a crosslinkable composition comprising:

• (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• and
• (c) at least one photo-initiator selected from:
• hexafluorophosphorus triarylsulphonium salts, hexafluoroantimony triarylsulphonium salts, (tolylcumyl)tetrakis(pentafluorophenyl) iodonium salts, diaryliodonium hexafluoroantimonate salts, or mixtures thereof.

An optical fiber comprising at least one epoxidized polyolefin based polymer coating, said coating being formed from a crosslinkable composition comprising:

• (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• (c) at least one photo-initiator;
• and
• (d) at least one adhesion promoter selected from organo-functional silanes.

An optical fiber comprising at least one epoxidized polyolefin based polymer coating, said coating being formed from a crosslinkable composition comprising:

• (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• (c) at least one photo-initiator;
• and
• (d) at least one adhesion promoter;
• in which the adhesion promoter is added to the crosslinkable composition in an amount of from 0.1 parts by weight to 2.5 parts by weight relative to 100 parts of (a)+(b).

An optical fiber comprising at least one epoxidized polyolef in based polymer coating, said coating being formed from a crosslinkable composition comprising:

• (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• (c) at least one photo-initiator;
• and
• (d) at least one reactive diluent monomer selected from vinyl ethers.

An optical fiber comprising at least one epoxidized polyolefin based polymer coating, said coating being formed from a crosslinkable composition comprising:

• (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• (c) at least one photo-initiator;
• and
• (d) at least one reactive diluent monomer in an amount not greater than 20 parts by weight relative to 100 parts of (a)+(b).

A crosslinkable composition comprising:

• (a) about 20–80 parts by weight of at least one epoxidized polydiene oligomer having a first and second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) about 20–80 parts by weight of at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• and
• (c) about 0.05–5 parts by weight relative to 100 parts of (a)+(b) of a photo-initiator.

A crosslinkable composition comprising:

• (a) at least one epoxidized polydiene oligomer having a first and a second end, said oligomer comprising at least one hydrocarbon chain that is substantially free of ethylenic double bonds, at least one epoxide group at said first end and at least one reactive functional group at said second end;
• (b) at least one hydrogenated polydiene oligomer comprising at least one reactive functional group capable of reacting with said epoxide groups;
• and
• (c) at least one photo-initiator;
• in which the epoxidized polydiene oligomer (a) is obtained by anionic (co)polymerization of conjugated diene monomers containing from 4 to 24 carbon atoms, or of disubstituted conjugated diene monomers, or of difluorinated conjugated diene monomers, followed by functionalization, hydrogenation and epoxidation.