Abstract: Provided is a radiation-curable, inner primary coating composition adapted for forming inner primary coatings on optical glass fibers.

Abstract: A fast curing radiation-curable composition useful as coating compositions for inner and outer primary coatings, inks, ribbons other matrix material coating layers for coating and surrounding optical fibers. The improved radiation-curable compositions, having a propoxylated monomer or oligomer component, demonstrate unexpectedly fast cure speeds while providing strong adhesion characteristics to a variety of substrates and can also be used as a general radiation-curable adhesive or can be adapted for use in the specialized process of digital versatile disk (DVD) production.

Abstract: 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.

Abstract: Provided is a radiation curable coating composition suitable for coating optical glass fiber, having a viscosity in the range of about 10 mPas to 10,000 mPas made of about 20 to about 99.9 weight % of at least one of a thermoplastic non-crosslinking polymer and an ethylenically-unsaturated oligomeric compound; optionally, from 0 to about 60 weight % of an ethylenically-unsaturated diluent, optionally, from 0 to about 60 weight % of a multifunctional ethylenically-unsaturated compound, and optionally, from 0 to about 10 weight % of a photoinitiator, provided that if the thermoplastic non-crosslinking polymer is present and no ethylenically-unsaturated oligomeric compound is present, then the ethylenically-unsaturated diluent is present in an amount up to about 60 weight % and the multifunctional ethylenically-unsaturated compound is present in an amount up to about 60 weight %. The composition provides a tack-free handeable fiber after radiation cure and is fugitive upon thermolysis.

Abstract: A free-radical radiation curable composition comprising:a) at least one compound containing one to six vinyl ether groups; andb) at least one compound containing a urethane backbone with one to six maleate and/or fumarate end groups,wherein the ratio of vinyl ether groups to maleate and/or fumarate groups is in the range of about 1 to about 1:5.

Abstract: A free-radical radiation curable composition comprising:a) at least one compound containing from one to about six vinyl ether groups; andb) at least one compound containing a saturated backbone and at least one maleate or fumarate end group per molecule,wherein the ratio of vinyl ether groups to maleate or fumarate groups in the composition is in the range of about 5:1 to about 1:5.

Abstract: A free-radical radiation curable composition comprising:a) at least one compound containing from one to about six vinyl ether groups; andb) at least one product obtainable by the reaction of a half-ester of maleic and/or fumaric acid with an epoxy functionalized compound,wherein the ratio of vinyl ether groups to maleate and/or fumarate groups is in the range of about 5:1 to about 1:5.

Abstract: A method of coating a concrete floor is disclosed in which the concrete surface is coated with a homogeneous liquid coating composition containing maleate or fumarate unsaturation in combination with vinyl ether unsaturation and a ketonic photoinitiator, the wet coating is allowed to seep into the concrete surface and to flow out on the concrete surface to form a smooth coating, and this coating is cured by exposing it at light having a wavelength in the range of from about 200 to about 600 nanometers.

Abstract: A cationically curable polyurethane composition comprises the reaction product of an organic polyisocyanate with a transvinylation polyhydric alcohol mixture containing hydroxy groups. The polyisocyanate consumes substantially all of the available hydroxy groups in the transvinylation polyhydric alcohol mixture. These compositions are particularly useful in stereolithography. A method of transvinylation utilizing ultrasonic energy is also disclosed.

Abstract: A photocurable ethylenically unsaturated liquid coating composition consisting essentially of: 1- polyethylenically unsaturated material in which the ethylenically unsaturated groups are polymerizable groups which are not (meth)acrylate groups; 2- a polyamine resin; and 3- an hydroxyalkyl phenone photoinitiator to speed the cure. The photocure rate is also speeded by combining a tertiary amine-functional acrylic copolymer, an allyl-functional resin, and a maleate-functional resin in a weight ratio of about 15-65/5-45/30-70. In preferred practice both expedients are used to maximize the cure speed.

Abstract: An ultraviolet curing liquid coating composition which, when cured with ultraviolet light in the presence of an appropriate photoinitiator, provides a coating adapted for the coating of optical glass fiber. This coating composition comprises as the essential component, an acrylate-terminated polyurethane oligomer based on a polyfunctional core which is at least trifunctional and which supports one branch for each functionality in the core. Each of the branches leads to an acrylate-functional terminal group, with there being from about 150 to about 2500 units of molecular weight in each branch between the trifunctional core and the acrylate-functional terminal group. Depending primarily upon the molecular weight of the branches, one can provide coating compositions for buffer coat, single coat or topcoat use.

Abstract: Ultraviolet curing oligomers and liquid coating compositions based thereon are disclosed which cure with ultraviolet light in the presence of a photoinitiator. The coating compositions can provide either a single coating for optical glass fiber which resists microbending difficulties down to around -40.degree. C., or a topcoat for overcoating softer buffer coatings which resist microbending down to around -60.degree. C. The coating compositions consist essentially of the linear polyacrylate-terminated polyurethane polyurea oligomer in admixture with an ultraviolet curable liquid acrylate or polyacrylate to provide the liquidity needed for application and to adjust the hardness or softness of the cured coating for the selected single coat or topcoat utility. The oligomer contains a linear polyurethane core terminated by urea formation with a polyhydroxy-functional amine containing a single isocyanate-reactive amino hydrogen atom.

Abstract: There is disclosed linear polymers and copolymers of polymerized monoethylenically unsaturated monomers having a weight average molecular weight from about 1,500 to about 15,000, with most of the polymer ends being terminated with hydroxyl groups, one at each end of the polymer molecule. These polymers have an average of from about 1.6 to 5 hydroxyl groups per polymer molecule. Thermosetting coating compositions containing these polymers are also disclosed. The monomers which are polymerized may include a small proportion of hydroxy-functional monomers, but desirably consist of monoethylenically unsaturated monomers lacking hydroxyl functionality.

Abstract: An hydroxy-functional polyurethane reaction product is disclosed which enables the provision of thermosetting solution coating compositions which cure at low temperature to form flexible coatings. These polyurethanes are provided by the reaction of an organic diisocyanate with a stoichiometric excess of an essentially linear hydroxy-functional polyester which is the polyesterification reaction product of C.sub.4 -C.sub.10 aliphatic dicarboxylic acid or anhydride thereof with a stoichiometric excess of C.sub.3 -C.sub.8 aliphatic diol providing an alcohol/acid molar ratio of 3/2 to 6/5. The reaction is substantially complete as indicated by an acid number less than 10, and the diisocyanate is used in an amount providing an NCO/OH ratio of from 2/3 to 12/13. The thermosetting solution coating composition is provided by an organic solvent having dissolved therein from 5-50% of total resin solids of a curing agent reactive with hydroxy groups together with the polyurethane which has been described.

Abstract: A modified polyepoxide is disclosed which cures with an amine-functional curing agent at room temperature to form coatings having better flexibility and resistance to Skydrol hydraulic fluid. This modified polyepoxide is the reaction product of a diurethane diisocyanate with a resinous polyepoxide having a molecular weight of from about 500 to about 1000 and a 1,2-epoxy equivalency of from about 1.5 to about 2.0. The diurethane diisocyanate is reacted with the resinous polyepoxide in an amount of from about 1.5 moles to about 16 moles per 100 moles of the polyepoxide. The diurethane diisocyanate is itself the reaction product of a dicarbinol-terminated polydimethyl polysiloxane having a molecular weight of from about 1000 to about 4000 with substantially a 2:1 stoichiometric excess of an organic diisocyanate.

Abstract: A process is disclosed in which polyalkoxy amino silane adhesion promoters are incorporated into isocyanate-functional polyurethane resins formed by the reaction of a stoichiometric excess of organic polyisocyanate with an hydroxy-functional resin without producing cloudy and/or unstable resin solutions. In this process, the hydroxy-functional resin is prereacted with the alkoxy functionality of the amino silane in a reaction which liberates alcohol, and then a stoichiometric excess of the organic polyisocyanate is added to cause the isocyanate groups of the polyisocyanate to react with both the hydroxy groups and the amino hydrogen atoms present.

Abstract: Comb cationic polymers are disclosed which are constituted by amine polymers rendered cationic and water dispersible with the aid of a solubilizing acid. The amine polymers are the product of reaction of: (1) a soluble polymer having an average molecular weight in the range of about 500 to about 10,000 and having a plurality of functional groups reactive with carboxyl or amine functionality (such as epoxy groups as supplied by an epoxidized polybutadiene); with (2) a solution addition copolymer of monoethylenically unsaturated monomers containing copolymerized tertiary amine monomer. The copolymer is terminated with a single carboxy group or a single amino hydrogen atom, and it is free of reactive groups capable of reacting with the functional groups of the soluble polymer, except for the single carboxyl group or the single amino hydrogen atom. The products are particularly useful in cationic electrocoating where they provide improved stability and better Coulombic efficiency.

Abstract: A method of forming a dry, cured coating on a substrate is disclosed in which an aqueous latex of emulsion copolymer particles containing a plurality of trialkoxysilyl groups is applied to a substrate to form a wet coating, the wet coating is exposed to a volatile amine to catalyze the curing reaction, and the amine-exposed wet coating is allowed to dry by vaporization of the volatile components present.

Abstract: Curable N-acylurea polymers and coating compositions are provided which cure by reaction of ethylenic unsaturation of the acyl group. The subject polymers are prepared by reaction of a polymeric carbodiimide with an ethylenically unsaturated monocarboxylic acid. Coating compositions so provided may have N-acylurea polymer solids contents of about 30% to about 95% by weight, exclusive of pigment.

Abstract: An atmospheric moisture curable coating composition containing an organosilicate having a plurality of atmospheric moisture hydrolyzable alkoxy group-to-silicon bonds and about 1% to about 50% by weight of organosilicate of a 1,3-oxazolidine curing agent, and method for curing same.