The present disclosure relates to acid-blocked alkylaminopyridine catalysts for use in a polyurethane formulation. The polyurethane formulation may include the acid-blocked alkylaminopyridine catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound and a halogenated olefin compound.

The invention is generally related to a method for producing, in a consistent manner, contact lenses each having an intact durable coating thereon, wherein the coating is a hydrogel coating formed by covalently attached a hydrophilic polymeric material having azetidinium groups onto a base coating of a polyanionic polymer on a contact lens at a relatively low temperature (e.g., from about 40° C. to about 60° C.). The coating temperature for forming a durable hydrogel coating on top of the base coating of a contact lens can be significantly lowered by raising, in situ, the pH (to about 9.5 or higher) of a reactive coating solution which contains the hydrophilic polymeric material having azetidinium groups.

Stain-blocking polymers, as well as primers, kits, and methods that include such polymers, wherein the stain-blocking polymer is an emulsion latex polymer including interpolymerized monomers including: at least 1 wt-%, based on the total weight of the interpolymerized monomers, of one or more acrylic acid ester monomers of Formula (I):
RO—C(O)—CH═CH.sub.2
wherein: R is a branched alkyl group having a tertiary carbon atom, a cycloaliphatic group, or a combination thereof; optionally, one or more (meth)acrylate monomers selected from n-butyl (meth)acrylate, ethylhexyl (meth)acrylate, methyl (meth)acrylate, and combinations thereof; optionally, one or more wet adhesion monomers; and optionally, styrene; and wherein the stain-blocking primer includes at least 10 wt-%, based on the total nonvolatile weight of the primer, of the emulsion latex polymer; an aqueous carrier; and optionally, one or more additives selected from a surfactant, thickener, coalescent, biocide, mildewcide, colorant, and combinations thereof.

Provided are a primer composition that can adhere well to a variety of adherends and ensures a long workable time together with excellent durability, and a curtain wall unit. A primer composition comprising: (A) 100 parts by mass of an organosiloxane polymer having a three-dimensional network structure comprising R.sub.3SiO.sub.1/2 units (R independently represents a C1-6 substituted or unsubstituted monovalent hydrocarbon group) and SiO.sub.4/2 units, the molar ratio of R.sub.3SiO.sub.1/2 units to SiO.sub.4/2 units being 0.6-1.2; (B) 300-1,000 parts by mass of a mixture of organo-oxy-group-containing titanium compounds containing 75 mol % or more of an organo-oxy-group-containing titanium compound represented by formula (1)

Ti(OR.sup.1).sub.3(R.sup.2CH.sub.2COCHCOOCH.sub.2R.sup.2).sub.1   (1)

(R.sup.1 may be the same or different and are substituted or unsubstituted monovalent hydrocarbon groups, R.sup.2 may be the same or different and are hydrogen atoms and/or substituted or unsubstituted monovalent hydrocarbon groups); and (C) 1,000-8,000 parts by mass of a solvent.

The instant invention concerns the use of polymers obtained by radical copolymerization of a mixture of (1) acrylic acid; (2) methacrylic acid; and (3) at least one allylcatechol selected from 4-allylbenzene-1,2-diol, 3-allylbenzene-1,2-diol; methylated forms thereof (eugenols); and mixtures thereof, for treating a metallic surface intended to be adhesive-bonded to another surface, in order to impart a resistance to the adhesive failure to the resulting bonding.

The present invention relates to the use of (Bi1−xAx)(V1−yMy)O4 in a non-stick coating for a household article so as to catalyse the breakdown of the by-products resulting from said coating during the manufacturing process thereof or the use of said household article, characterised in that: x is 0 or x is from 0.001 to 0.999, y is 0 or y is from 0.001 to 0.999, A and M are selected from the group consisting of nitrogen, phosphorus, an alkali metal, an alkaline earth metal, a transition metal, a poor metal, a metalloid or a lanthanide, A and M are different from each other.

The purpose of the present invention is the use of (Bi.sub.1-xA.sub.x)(V.sub.1-yM.sub.y)0.sub.4 in a non-stick coating for a household article so as to reduce or prevent the color change of said coating during the manufacturing process thereof, characterised in that: —x is equal to 0 or x is from 0.001 to 0.999; —y is equal to 0 or y is from 0.001 to 0.999; —A and Mare selected from the group consisting of nitrogen, phosphorus, an alkali metal, an alkaline earth metal, a transition metal, a poor metal, a metalloid or a lanthanide; —A and M are different from each other.

The present technology provides a coating system including a luminophoric material. The luminophoric material is a pyridine-containing ligand chosen from a substituted or unsubstituted bidentate pyridine compound, a substituted or unsubstituted tridentate pyridine compound, or a combination of two or more thereof. Alternatively, the luminophoric material may be a fluorescent dye. The coating system may include a topcoat material, a primer material, or a combination thereof.

A substrate having a burnable coating mask includes: a substrate having a first section and a second section; a mask coating layer over the first section of the substrate; and a functional coating layer over at least a portion of the mask coating layer and over the second section of the substrate. A method of segmenting a substrate having a layer thereover, a method of preparing a segmented substrate having a layer thereover, a segmented substrate, and a transparency are also disclosed.

The disclosure belongs to the technical field of floor preparation, and provides a method for treating a surface of a floor. Compared with traditional methods for preparing floor, in the method according to the disclosure, an embossing is performed not directly after laminating, but after applying a wear-resistant primer, and a topcoat is then applied. Therefore, the resulting embossed floor has a clear texture. Further, the composition of the wear-resistant primer could be optimized, such that the resulting embossed floor exhibits excellent wear resistance and hardness.