Coating system for glass adhesion retention

A coated optical glass fiber having more than one layer of coating, wherein the coated optical glass fiber has a dynamic fatigue value n.sub.d of at least 24, provided that said coated optical glass fiber does not have a carbon hermetic coating layer.

A coated optical glass fiber coated with more than one coating layer, wherein at least the innermost coating layer is formulated from a composition comprising an adhesion promoter that is a tetrasubstituted compound having the formula:

• ##STR4## where A is Si, Ti or Zr, and where X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are hydrolyzable groups that can be hydrolyzed from the tetrasubstituted compound in the presence of water;
• and
• wherein at least one of the other coating layers is formulated from a composition containing an acid-functional monomer.

A coated optical glass fiber coated with more than one coating layer, wherein the innermost coating layer is formulated from a composition comprising an adhesion promoter that is a tetrasubstituted compound having the formula:

• ##STR5## wherein A is Si, Ti or Zr, and where X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are hydrolyzable groups that can be hydrolyzed from the tetrasubstituted compound in the presence of water;
• and
• wherein at least one of the other coating layers is formulated from a composition comprising said tetrasubstituted compound.

An optical glass fiber ribbon comprising:

• at least one coated optical glass fiber embedded in a cured matrix material, wherein the matrix material is formulated from a composition comprising an adhesion promoter that is a tetrasubstituted compound having the formula:
• ##STR7## wherein A is Si, Ti or Zr, and where X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are hydrolyzable groups that can be hydrolyzed from the tetrasubstituted compound in the presence of water.

An optical glass fiber ribbon comprising:

• at least one coated optical glass fiber embedded in a cured matrix material formulated from a matrix forming composition comprising a radiation-curable monomer or oligomer having an ethylenically unsaturated functional group and an acid functional group.

An optical glass fiber ribbon comprising:

• at least one coated optical glass fiber embedded in a cured matrix material, wherein the coated optical glass fiber contains a coating formulated from a composition comprising an adhesion promoter that is a tetrasubstituted compound having the formula:
• ##STR8## wherein A is Si, Ti or Zr, and where X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are hydrolyzable groups that can be hydrolyzed from the tetrasubstituted compound in the presence of water.

A coated optical glass fiber having a polymeric inner primary coating which contacts the optical glass fiber and a polymeric outer primary coating, said polymeric outer primary coating being formulated from a coating composition comprising a radiation-curable monomer or oligomer having an ethylenically unsaturated functional group and an acid functional group.