摘要:
A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of −35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
摘要翻译:涂覆光纤可以具有初级涂层和二次涂层,其中初级涂层可以具有良好的抗微弯曲性,并且通过固化具有高固化速度的组合物获得。 在一个示例中,涂覆的光纤可以包括作为光纤,初级涂层和二次涂层。 光纤可以在1550nm处具有小于0.650dB / km的衰减增加,其中初级涂层的模量保持率至少为0.5,玻璃化转变温度为-35℃,其中初级涂层为 其通过固化具有固化剂量的初级涂料组合物获得小于0.65J / cm 2的最大可获得模量的95%。
摘要:
A coated optical fiber can have a primary coating and a secondary coating, where the primary coating can have good microbending resistance and is obtained by curing a composition having a high cure speed. In one example, a coated optical fiber can include as optical fiber, a primary coating and a secondary coating. The optical fiber can have an attenuation increase of less than 0.650 dB/km at 1550 nm, with the primary coating having a modulus retention ratio of at least 0.5, a glass transition temperature of −35° C., and where the primary coating is obtained by curing a primary coating composition having a cure dose to attain 95% of the maximum attainable modulus of less than 0.65 J/cm2.
摘要翻译:涂覆光纤可以具有初级涂层和二次涂层,其中初级涂层可以具有良好的抗微弯曲性,并且通过固化具有高固化速度的组合物获得。 在一个示例中,涂覆的光纤可以包括作为光纤,初级涂层和二次涂层。 光纤可以在1550nm处具有小于0.650dB / km的衰减增加,其中初级涂层的模量保持率至少为0.5,玻璃化转变温度为-35℃,其中初级涂层为 其通过固化具有固化剂量的初级涂料组合物获得小于0.65J / cm 2的最大可获得模量的95%。
摘要:
Provided is a radiation-curable, glass optical fiber coating composition which when suitably cured exhibits resistance to attack from hydrocarbon gel cable filing material. The composition containsabout 10 to about 90% by weight of a first radiation-curable oligomer;from 0 to about 40% by weight of a reactive diluent;from 0 to about 40% by weight of a photoinitiator;from 0 to about 10% by weight of a pigment; andabout 10 to about 90% by weight of a second radiation-curable oligomer according to the following formula:R.sup.1 -L.sup.1 -C.sup.1 -L.sup.2 -R.sup.2 (1)where:R.sup.1 and R.sup.2, independently, each represent a radiation-curable functional group;L.sup.1 and L.sup.2, independently, each represent an alkyleneoxy chain having from about 2 to about 40 carbon atoms, wherein L.sup.1 and L.sup.2 are linked to C.sup.1 through an oxygen atomC.sup.1 comprises a hydrocarbon having from about 5 to about 40 carbon atoms and containing at least one cyclic group.
摘要:
This invention provides an improved coating composition for glass substrates that comprises a poly(siloxane). The introduction of a poly(siloxane) in a coating composition for a glass substrate, and in particular an optical fiber, acts to delay the rate of deterioration of the glass or optical fiber due to moisture, and improves adhesion between the glass substrate and the coating composition. The introduction of a poly(siloxane) into a polymeric coating composition also improves the interlayer adhesion when more than one coating is applied to a glass substrate. This invention also provides an improved coated glass substrate having a decreased rate of deterioration due to moisture, improved adhesion between the glass substrate and the coating composition and between the various coatings, wherein the coating composition comprises a poly(siloxane).
摘要:
The present invention is directed to a compound of the Formula:R.sub.1 --R.sub.2 --R.sub.3 --R.sub.4 --A--(R.sub.5).sub.n (R.sub.6).sub.3-nwherein: A is Si or Ti; R.sub.1 is an alkenoxy, acryloxy or ethylenically unsaturated dicarboxylate group; R.sub.2 is a 2 to 18 carbon linear, branched or cyclo alkyl, alkenyl, alkynyl, acyl, aryl or poly(alkoxy) group; R.sub.3 contains a urethane, urea, or thiourethane linkage; R.sub.4 is a 2 to 18 carbon linear, branched, or cyclic alkyl, alkenyl, alkynyl, aryl or acyl non-hydrolyzable silyl linking group; R.sub.5 is a 2 to 18 carbon linear, branched, or cyclic alkyl, alkenyl, alkynyl, aryl or acyl group; R.sub.6 is any hydrolyzable silyl linking group (alkoxy, alkenoxy, or halogen); and n is 0 to 2.The present invention is further directed to an improved method of using of a compound of the above Formula as an adhesion promoter in a UV-curable composition for a surface with a free nucleophilic group. Preferably, that surface is glass.The present invention is yet further directed to an improved UV-curable coating composition, wherein the improvement comprises adding to said coating composition a compound of the above formula in an amount sufficient to promote adhesion of a coating to a surface with a free nucleophilic group.
摘要:
A radiation-curable composition is disclosed. An fluorinated oligomer is combined with a diluent monomer and a photoinitiator to form the radiation-curable coating composition. The fluorinated oligomer is substantially free of isocyanate groups. The radiation-curable compositions provide a suitable coating for substrates, are resistant to penetration by water and liquid hydrocarbons, retain their physical properties over a wide temperature range and exhibit immeasurably low surface friction properties.
摘要:
Provided is a radiation-curable, glass optical fiber coating composition which when suitably cured exhibits resistance to attack from hydrocarbon gel cable filing material. The composition contains about 10 to about 90% by weight of a first radiation-curable oligomer; from 0 to about 40% by weight of a reactive diluent; from 0 to about 40% by weight of a photoinitiator; from 0 to about 10% by weight of a pigment; and about 10 to about 90% by weight of a second radiation-curable oligomer according to the following formula: R1-L1-C1-L2-R2 (1) where: R1 and R2, independently, each represent a radiation-curable functional group; L1 and L2, independently, each represent an an alkyleneoxy chain having from about 2 to about 40 carbon atoms, wherein L1 and L2 are linked to C1 through an oxygen atom C1 comprises a hydrocarbon having from about 5 to about 40 carbon atoms and containing at least one cyclic group.
摘要:
Optical fiber coatings are disclosed having excellent ribbon stripping and adhesion behavior. The coatings are radiation-curable. The excellent stripping and adhesion behavior can be achieved by several means which include by use of additives, by use of radiation-curable oligomers having higher molecular weight, or by use of coatings having certain thermal properties. Combination of means can be employed. Stripping behavior can be measured by crack propagation and fiber friction measurements.
摘要:
Radiation-curable inner and outer primary optical fiber coatings are disclosed having both fast cure speed and reduced rates of yellowing. The compositions comprise particular photoinitiators and UV absorbers which are used in amounts to provide the combination of properties. The UV absorber can have ethylenic unsaturation. Outer primary coatings can be formulated to screen inner primary coatings and have fast cure speed.
摘要:
This invention provides an improved coating composition for glass substrates that comprises a poly(siloxane). The introduction of a poly(siloxane) in a coating composition for a glass substrate, and in particular an optical fiber, acts to delay the rate of deterioration of the glass or optical fiber due to moisture, and improves adhesion between the glass substrate and the coating composition. The introduction of a poly(siloxane) into a polymeric coating composition also improves the interlayer adhesion when more than one coating is applied to a glass substrate. This invention also provides an improved coated glass substrate having a decreased rate of deterioration due to moisture, improved adhesion between the glass substrate and the coating composition and between the various coatings, wherein the coating composition comprises a poly(siloxane).