A water-based polyurethane resin and a method for manufacturing the same are provided. The method for manufacturing the water-based polyurethane includes: a preparation step of a prepolymer, a dilution step of the prepolymer, a water dispersion and chain extension step, and an acrylic synthesis step. The method further includes mixing polyol and polyisocyanate to obtain a prepolymer, and diluting the prepolymer by adding acrylic monomer in the prepolymer. In the water-based polyurethane resin, at least one of the polyhydric alcohol, polyisocyanate, and the acrylic monomer includes a compound with a cyclic structure.

An anionically-stabilized aqueous emulsion composition includes a) a first emulsion polymer having a Tg from −60° C. to 40° C.; b) a volatile base; and c) polymeric particles, different from the first emulsion polymer and present in emulsified form. The c) polymeric particles are polyamine graft copolymers, in which vinyl monomers form a polymer grafted to a water-soluble amino-group containing polymer. The anionically-stabilized aqueous emulsion composition may have a pH of from 8 to 11.

An anionically-stabilized aqueous emulsion composition includes a) a first emulsion polymer having a Tg from −60° C. to 40° C.; b) a volatile base; and c) polymeric particles, different from the first emulsion polymer and present in emulsified form. The c) polymeric particles are polyamine graft copolymers, in which vinyl monomers form a polymer grafted to a water-soluble amino-group containing polymer. The anionically-stabilized aqueous emulsion composition may have a pH of from 8 to 11.

Methods and formulations for manufacturing polishing articles used in polishing processes are provided. In one implementation, a UV curable resin precursor composition is provided. The UV curable resin precursor comprises a precursor formulation. The precursor formulation comprises a first resin precursor component that comprises a semi-crystalline radiation curable oligomeric material, wherein the semi-crystalline radiation curable oligomeric material is selected from a semi-crystalline aliphatic polyester urethane acrylate, a semi-crystalline aliphatic polycarbonate urethane acrylate, a semi-crystalline aliphatic polyether urethane acrylate, or combinations thereof. The precursor formulation further comprises a second resin precursor component that comprises a monofunctional or multifunctional acrylate monomer. The resin precursor formulation further comprises a photoinitiator, wherein the precursor formulation has a viscosity that enables the precursor formulation to be dispensed to form a portion of a polishing article by an additive manufacturing process.

This invention relates to a coating comprising prepolymer and monomers for application onto polyurethane for chemical resistance, abrasion resistance, water proof etc. Usually polyurethane is porous and does not have sufficient stain, abrasion and chemical resistance. The said coatings developed using technology of chemical grafting that involves the use of prepolymers, monomers, catalyst, graft initiator, wetting agents, fillers and other ingredients of the composition. The coating thus obtained when applied on the polyurethane allows obtaining graft polymerization, thereby forming a polymeric film chemically attached to the substrate. The polyurethane substrate is reacted with graft initiator which creates the reaction sites on the substrate via free radical mechanism. This in turn renders the substrate receptive to attachment of monomers/prepolymers forming polymeric film that is chemically bonded to the substrate which has then the desired property in terms of stain resistance, abrasion wear, crock, water, chemical resistance and other properties.

A resin composition for the secondary coating of an optical fiber is a resin composition containing a non-reactive urethane compound having a number average molecular weight of 10000 or more and 50000 or less, a photopolymerizable compound, and a photopolymerization initiator, the content of the non-reactive urethane compound is 0.05 parts by mass or more and 5 parts by mass or less based on the total amount of the resin composition, and the non-reactive urethane compound is a reaction product of a polyol having a number average molecular weight of 8000 or more and 20000 or less, a diisocyanate, and a compound having active hydrogen.

A resin composition for the secondary coating of an optical fiber is a resin composition containing a non-reactive urethane compound having a number average molecular weight of 10000 or more and 50000 or less, a photopolymerizable compound, and a photopolymerization initiator, the content of the non-reactive urethane compound is 0.05 parts by mass or more and 5 parts by mass or less based on the total amount of the resin composition, and the non-reactive urethane compound is a reaction product of a polyol having a number average molecular weight of 8000 or more and 20000 or less, a diisocyanate, and a compound having active hydrogen.

A water dispersion of gel particles, in which the gel particles having a three-dimensional crosslinked structure including at least one of Polymer Structure (1) or Polymer Structure (2), having a hydrophilic group and a polymerizable group, and including photopolymerization initiators are dispersed in water, a method of producing the water dispersion, and an image forming method using the water dispersion are provided. P.sup.1 and P.sup.2 represent a polymer chain consisting of polyester and the like and having a number-average molecular weight of 500 or greater, Z.sup.11 represents a (n.sub.1+1)-valent group, Z.sup.12 represents a (m.sub.1+1)-valent group, m.sub.1, n.sub.1 and n.sub.2 each represent an integer of 1 or greater, X.sup.1 represents a single bond, a —CH.sub.2— group, or a —NH— group, Z.sup.21 represents a (n.sub.2+1)-valent group, R.sup.1 represents a hydrocarbon group that may include a hetero atom.

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Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA), wherein a composition of one or more photocurable compounds, such as a compound with multiple ethylenically unsaturated groups and a compound with multiple thiol groups, is photopolymerized, optionally in the presence of two or more thermocurable compounds which are reactive with one another and are subjected to thermopolymerization, to form a manufactured article in solid form.

Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA), wherein a composition of one or more photocurable compounds, such as a compound with multiple ethylenically unsaturated groups and a compound with multiple thiol groups, is photopolymerized, optionally in the presence of two or more thermocurable compounds which are reactive with one another and are subjected to thermopolymerization, to form a manufactured article in solid form.