Abstract: Some variations provide a method of forming a transparent icephobic coating, comprising: obtaining a hardenable precursor comprising a first component and a plurality of inclusions containing a second component, wherein one of the first component or the second component is a low-surface-energy polymer, and the other is a hygroscopic material; applying mechanical shear and/or sonication to the hardenable precursor; disposing the hardenable precursor onto a substrate; and curing the hardenable precursor to form a transparent icephobic coating. The coating contains a hardened continuous matrix containing regions of the first component separated from regions of the second component on an average length scale of phase inhomogeneity from 10 nanometers to 10 microns, such as less than 1 micron, or less than 100 nanometers. The transparent icephobic coating may be characterized by a light transmittance of at least 50% at wavelengths from 400 nm to 800 nm, through a 100-micron coating.

Abstract: A novel primerless adhesive composition with unique properties in automotive related applications, particularly in glass bonding applications; the process of making thereof.

Abstract: A process for producing a polymerizable composition for optical materials of the present invention includes a step A of mixing together a polyisocyanate compound (i), a polymer (ii) represented by General Formula (ii), a photochromic compound (iii), and an internal release agent (iv), a step B of mixing a mixed solution obtained by the step A with a polythiol compound (v), and a step C of further mixing a mixed solution obtained by the step B with a polymerization catalyst (vi) so as to obtain a polymerizable composition for optical materials, wherein in the step A, the internal release agent (iv) is added so that a content thereof in the polymerizable composition for optical materials is 500 to 3,000 ppm, and in the step C, the polymerization catalyst (vi) is added so that a content thereof in the polymerizable composition for optical materials is 120 to 500 ppm. R1A1—R2—A2—R3]n??(ii).

Abstract: There is provided herein a silylated polyurethane composition, a process of preparing a silylated polyurethane polymer, and an adhesive, sealant or coating containing a silylated polyurethane made therewith.

Abstract: A polymeric material includes a polyisobutylene-polyurethane block copolymer. The polyisobutylene-polyurethane block copolymer includes soft segments, hard segments, and end groups. The soft segments include a polyisobutylene diol residue. The hard segments include a diisocyanate residue. The end groups are bonded by urea bonds to a portion of the diisocyanate residue. The end groups include a residue of a mono-functional amine.

Abstract: A polyurethane foam may include a base polyol component, a phosphorous polyol component, an expandable graphite, and melamine. The polyurethane foam may have a VO rating based on a UL94 flame retardancy test performed at a polyurethane foam thickness of 3.5 mm and a polyurethane foam density of 380 kg/m3.

Abstract: This invention relates to catalysts for polyesterol synthesis and the use of a di-thio compound as catalyst for the production of polyester-polyols.

Abstract: A polymerizable composition for an optical material of the present invention includes (A) a compound of which pKa value is 1 to 9, (B) a di- or higher functional iso(thio)cyanate compound, and (C) a di- or higher functional active hydrogen compound.

Abstract: A two-component polyurethane composition comprising: a specific emulsion polymer, and a water-dispersible polyisocyanate; the emulsion polymer comprising, by weight based on the weight of the emulsion polymer, (a) greater than 15% to less than 30% of structural units of tert-butyl methacrylate, (b) greater than 10% of structural units of a hydroxy-functional alkyl (meth)acrylate, (c) structural units of a phosphorous-containing acid monomer and/or a salt thereof, (d) structural units of an additional acid monomer and/or a salt thereof, and (e) structural units of an additional monoethylenically unsaturated nonionic monomer; wherein the weight ratio of (d)/(c) is in the range of from 7.1:1 to 9.9:1; and a process of preparing the two-component polyurethane composition.

Abstract: The present disclosure includes binder systems for making foundry articles. The binder systems may comprise a humic substance-containing component that comprise lignite, an isocyanate component, and a catalyst component. The binder systems may be mixed with an aggregate (e.g., sand) for making foundry articles such as molds and cores. Also disclosed herein are methods of making foundry articles using the binder systems.

Abstract: There is provided a urethane resin that is excellent in adhesive strength, and maintains high adhesive strength even after exposure to high temperature and humidity. A urethane resin obtained by reacting a glycol-modified aromatic hydrocarbon-formaldehyde resin (A) modified with a glycol with a polyisocyanate (B) having two or more free isocyanate groups in a molecule.

Abstract: A method for producing a polymerizable composition, the method including: step (1) of preparing composition A having a water content of 200 ppm by mass or less, the composition A including a polyisocyanate component but not including a polymerization catalyst; step (2) of preparing composition B having a water content of 1,000 ppm by mass or less, the composition B including a polythiol component; and step (3) of mixing the composition A and the composition B and obtaining a polymerizable composition, and also a method for producing an optical component, the method including: a step of injecting the above-mentioned polymerizable composition into a molding die; and a step of polymerizing the polymerizable composition.

Abstract: An adhesive composition comprising a polyurethane and a cationic polymeric dopant or a polymerizable cationic dopant may be used to form one or more adhesive layers of electro-optic assemblies. They enable improved electro-optic performance of the corresponding electro-optic devices even at low temperatures.

Abstract: Disclosed is an impact-resistant and aging-resistant reflective plastic applied to an automobile, which is prepared by copolymerizing of polyether polyol, 4,4,4-triphenylmethane triisocyanate and a benzimidazole derivative modified ZnS-mesoporous silica composite, the benzimidazole derivative modified ZnS-mesoporous silica composite is a ZnS-mesoporous silica composite modified by an anti-aging agent and a silane coupling agent KH-560, the ZnS-mesoporous silica is obtained by mixing an amphoteric surfactant, zinc chloride, and ?-aminopropyltrimethoxysilane uniformly, then reacting in ethyl orthosilicate, and calcining with hydrogen sulfide. In the present disclosure, by dispersing zinc sulfide in the pores of mesoporous carbon dioxide, chemical grafting 2-(2-hydroxy-5-aminophenyl)benzimidazole as a bridge onto isocyanate, and then polymerizing into polyurethane, which can improve the reflective performance and aging resistance of polyurethane, and improve the abrasion resistance and impact resistance.

Abstract: Disclosed is an adhesive formulation that, when stimulated by a defeatable stimulation, reduces an adhesive bonding force of the adhesive formulation and defeats the adhesive formulation. The adhesive formulation having (i) programmable linkages made from Diels-Alder adducts and (ii) a concentration of diene traps. The Diels-Alder adducts may be furan-maleimide, and the diene traps may be (i) latent alkenes and (ii) selected from functional groups that will create irreversible reations with furan. The adhesive formulation may be capable of being applied as a coating, and the adhesive formulation may be capable of being extruded. The adhesive formulation may have a bonding temperature between 75 and 120° C. And the defeatable stimulation could, for example, be a temperature above 130° C. The adhesive formulation also may contain several types of programmable linkages and diene traps.

Abstract: A thermosetting urethane resin composition having excellent self-healing properties, antifouling properties, and elongation, a film including a curable coating of the thermosetting urethane resin composition, and a product including the film are provided. The thermosetting urethane resin composition contains a main agent containing a urethane prepolymer and an organic solvent and a curing agent. The urethane prepolymer contains a composition containing a polyol, a polyisocyanate, and a chain extender and has a hydroxy group at an end. The polyol contains a polyol having no aromatic ring. The polyol having no aromatic ring contains liquid and solid polycarbonate polyols. The polyisocyanate contains a polyisocyanate having no aromatic ring. The chain extender contains a low molecular weight triol. The curing agent contains triisocyanate. The percentage of the total amount of the low molecular weight triol and the triisocyanate is 10 mass % or higher and 35 mass % or lower.

Abstract: Polyurethane prepolymers having non-linear short chain diols and/or soft diisocyanates incorporated into the backbone are used to provide cured polyurethane coatings having a high hard segment content and low haze. The polyurethane prepolymers can also be used to improve the dispersion of filler in cured polyurethane compositions having a high filler loading. Cured coatings prepared from the two-part polyurethane systems meet the requirements for aerospace applications.

Abstract: The present invention relates to a polyether-modified polyisocyanate composition, which is obtainable by reacting a system containing the following components: a) a polyisocyanate having an isocyanate group functionality of 2-4.5; b) a polyoxyalkylene monoether alcohol; and c) optionally a catalyst; the polyoxyalkylene monoether alcohol has a number-average molecular weight of 900 g/mol-2000 g/mol and an oxypropylene group content of 45 wt. %-100 wt. %, relative to the total weight of the oxyalkylene group of the polyoxyalkylene monoether alcohol; the system has an equivalent ratio of isocyanate group to hydroxyl group of 5:1-110:1; the polyisocyanate composition has the following characteristics: i) the average isocyanate functionality is 1.8-4.1; ii) the isocyanate group content is 8-20 wt. %; and iii) the amount of the polyoxyalkylene monoether structure is greater than 10 wt. % and less than 50 wt. %, for characteristics ii) and iii), relative to the total weight of the polyisocyanate composition.

Abstract: The present invention relates to a bulk material comprising solid diisocyanate, especially naphthalene 1,5-diisocyanate or p-phenylene diisocyanate, to a process for production thereof, and to a process for preparing isocyanate prepolymers using the bulk material of the invention, to the isocyanate prepolymers themselves and to the use thereof for preparation of polyurethane elastomers, especially cast polyurethane elastomers.

Abstract: The present invention relates to compositions comprising a) 20-80% by weight, based on the total mass of constituents of the composition, of at least one sulfonic acid functionalized with at least one hydroxy and/or amino group and/or at least one sulfonic acid derivative functionalized with at least one hydroxy and/or amino group and b) 80-20% by weight, based on the total mass of constituents of the composition, of at least one compound having at least two OH groups, a method for the preparation thereof and use thereof.