摘要:
Epoxy-free hydroxy functional polyethers are provided which are the reaction product of a diglycidyl ether of a bisphenol having a molecular weight of about 1000 with a stoichiometric proportion of oleyl alcohol. These oleyl alcohol-based polyethers can be copolymerized in organic solvent solution with monoethylenically unsaturated monomers to form solvent-soluble copolymers. When the monomers include carboxyl-functional monomers providing an acid number in the range of 12-60, the copolymers are particularly adapted to be dispersed in water with the aid of a base and then electrodeposited at the anode together with a heat-hardening formaldehyde condensate to form corrosion resistant coatings.
摘要:
The invention relates to a Radiation Curable Secondary Coating composition for use on an Optical Fiber. The Radiation Curable Secondary Coating composition is a urethane-free Alpha Oligomer prepared by reaction of the following: (a) an acrylate compound selected from an alcohol-containing acrylate or alcohol-containing methacrylate compound, (b) an anhydride compound, (c) an epoxy-containing compound, (d) optionally an extender compound, and (e) optionally a catalyst. The invention also relates to a coated wire and to a coated optical fiber.
摘要:
Radiation curable coatings for use as a Primary Coating for optical fibers, optical fibers coated with said coatings and methods for the preparation of coated optical fibers. The present invention provides a radiation curable Primary Coating composition comprising: an oligomer; first diluent monomer; a second diluent monomer; a third diluent monomer; a first light stabilizer; a first photoinitiator; a second photoinitiator; an antioxidant; a second light stabilizer; and an adhesion promoter; wherein said oligomer is the reaction product of hydroxyl-containing acrylate; an isocyanate; a polyether polyol; a polymerization inhibitor; a catalyst; and a diluent; wherein said oligomer has a number average molecular weight of from at least about 4000 g/mol to less than or equal to about 15,000 g/mol; and wherein said catalyst is selected from the group consisting of copper naphthenate; cobalt naphthenate; zinc naphthenate; triethylamine; triethylenediamine; 2-methyltriethyleneamine; dibutyl tin dilaurate; metal carboxylates, including, but not limited to: organobismuth catalysts such as bismuth neodecanoate; zinc neodecanoate; zirconium neodecanoate; zinc 2-ethylhexanoate; sulfonic acids, including but not limited to dodecylbenzene sulfonic acid, methane sulfonic acid; amino or organo-base catalysts, including, but not limited to, 1,2-dimethylimidazole and diazabicyclooctane; triphenyl phosphine; alkoxides of zirconium and titanium, including, but not limited to Zirconium butoxide and Titanium butoxide; and Ionic liquid phosphonium salts; and tetradecyl(trihexyl) phosphonium chloride; and wherein a cured film of said radiation curable Primary Coating composition has a peak tan □ Tg of from about −25° C. to about −55° C.; and a modulus of from about 0.85 MPa to about 1.10 MPa.
摘要:
The invention relates to a solvent-free radiation curable, optical glass fiber coating composition containing:a) a urethane oligomer having a functional group capable of polymerization in the presence of actinic radiation, with an average functionality of at least about 1.2, having a vinyl addition polymer as backbone.b) a urethane compound having a functional group capable of polymerization in the presence of actinic radiation, with an average functionality of at least about 1, containing an organic moiety having about 5 or more carbon atoms as backbone.c) a reactive diluent.Furthermore, the invention relates to a solvent-free method for producing a solvent-free, radiation curable urethane oligomer composition.
摘要:
Ultraviolet-curable liquid coating compositions are disclosed in which improved adhesion to metal and plastic surfaces is obtained. This improvement is obtained by using, in admixture: (1) from 10% to about 60% of total resin solids of an organic solvent-soluble solution copolymer of monoethylenically unsaturated monomers including from 2.5% to 10% of tertiary amine monomer which is an aminoalkyl ester or amide of an alpha, beta-monoethylenic monocarboxylic acid in which the alkyl group contains 2-4 carbon atoms; and (2) from 40% to 90% of total resin solids of radiation-curable ethylenically unsaturated liquid. The coating composition includes photoinitiators and/or photosensitizers rendering the composition sensitive to ultraviolet light, and the components are present in solution in at least about 10% of inert volatile organic solvent.
摘要:
A method of producing essentially monomeric etherified formaldehyde condensates with a bisphenol having a plurality of formaldehyde-reactive sites is disclosed in which the bisphenol is reacted with at least about 2 moles of formaldehyde per mole of bisphenol in solution in etherifying alcohol in the presence of an insoluble strong acid cation exchange resin. The reaction is carried out at a reaction temperature of from about 30.degree. C. to about 100.degree. C. to simultaneously provide the desired methylolation and etherification without introducing soluble ionic contaminants.
摘要:
The invention provides an optical fiber coated with a Supercoating, wherein the Supercoating comprises at least two layers, wherein the first layer is a Primary Coating that is in contact with the outer surface of the optical fiber and the second layer is a Secondary Coating in contact with the outer surface of the Primary Coating, wherein the cured Primary Coating on the optical fiber has the following properties after initial cure and after one month aging at 85° C. and 85% relative humidity: A) a % RAU of from about 84% to about 99%;B) an in-situ modulus of between about 0.15 MPa and about 0.60 MPa; and C) a Tube Tg, of from about −25° C. to about −55° C.; wherein the cured Secondary Coating on the optical fiber has the following properties after initial cure and after one month aging at 85° C. and 85% relative humidity: A) a % RAU of from about 80% to about 98%; B) an in-situ modulus of between about 0.60 GPa and about 1.90 GPa; and C) a Tube Tg, of from about 50° C. to about 80° C.
摘要:
Provided is a ribbon assembly having the functional capability of providing break-out of ink coated or colored outer primary coated optical glass fibers from the ribbon assembly. The ink coating or colored outer primary coating is formulated from a benzophenone compound and at least about 1 wt. % of a homolytic photoinitiator to provide a level of adhesion between the ink coating or colored outer primary coating and matrix material which is less than the level of adhesion between the ink coating or colored outer primary coating and an adjacent underlying coating. Also provided are ink coating and colored outer primary coating compositions adapted to form ink coatings and colored outer primary coatings suitable for use on optical glass fibers contained in a ribbon assembly.
摘要:
Provided is a ribbon assembly having the functional capability of providing mid-span access without the use of additives, monomers or oligomers containing fluorine or silicone. The ribbon assembly is formulated from an oligomer which reduces the surface energy of the ink coating and/or the matrix material.
摘要:
The invention relates to a solvent-free radiation curable, optical glass fiber coating composition containing: a) a urethane oligomer having a functional group capable of polymerization in the presence of actinic radiation, with an average functionality of at least about 1.2, having a vinyl addition polymer as backbone. b) a urethane compound having a functional group capable of polymerization in the presence of actinic radiation, with an average functionality of at least about 1, containing an organic moiety having about 5 or more carbon atoms as backbone. c) a reactive diluent. Furthermore, the invention relates to a solvent-free method for producing a solvent-free, radiation curable urethane oligomer composition.