Abstract: A Lewis acid polymerization catalyst has a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, R1, R2, R3, and R4 are each independent, R1 is a 3,5-bis(trifluoromethyl)-substituted phenyl group, R2 is the 3,5-bis(trifluoromethyl)-substituted phenyl group or a first fluoro-substituted phenyl group selected from Set 1 structures, R3 is independently a second fluoro-substituted phenyl group selected from the Set 1 structures, and optional R4 includes a third functional group or functional polymer group.

Abstract: A coating composition, coated article and method for coating an article are provided. The composition is a coating composition that includes a polyurethane binder system further including a first resin component and a second resin component with a significant difference in hydroxyl numbers and crosslinked with an isocyanate. The composition, when applied to and cured on an article, imparts optimal antifingerprint, antireflecting, tactile, chemical agent-resistant, and self-healing effects to the coated article.

Abstract: Principles and embodiments of the present invention relate generally to thermoplastic polyurethane materials having controlled and improved stiffness and/or flexibility, and methods to prepare them. The thermoplastic polyurethanes described herein having superior stiffness and softening properties may be fabricated into film, tubing, and other forms of medical devices. The thermoplastic polyurethanes comprise: an aromatic diisocyanate excluding non-aromatic diisocyanates; at least one polyglycol; and a chain extender comprising at least one side-chain branching diol and excluding linear diols.

Abstract: Among other things, the present disclosure provides compositions and methods for an elastomeric cross-linked polyester material. Such an elastomeric cross-linked polyester material, in some embodiments, comprises a plurality of polymeric units of the general formula (-A-B—)p, wherein p is an integer greater than 1; and a plurality of urethane cross-links each of which covalently links two polymeric units to one another, which two linked polymeric unit each had at least one free hydroxyl or amino group prior to formation of the crosslink.

Abstract: A stable polyol pre-mix composition comprises a blowing agent, a polyol, a surfactant, and a catalyst composition comprising an oxygen-containing amine catalyst and a metallic salt. The oxygen-containing amine catalyst may be, for example, one or more of an alkanol amine, an ether amine, or a morpholine group-containing compound such as, for example, 2-(2-dimethylaminoethoxy)ethanol or N,N,N?-trimethylaminoethyl-ethanolamine. The metallic salt may be, for example, alkali earth carboxylates, alkali carboxylates, and carboxylates of metals selected form the group consisting of zinc (Zn), cobalt (Co), tin (Sn), cerium (Ce), lanthanum (La), aluminum (Al), vanadium (V), manganese (Mn), copper (Cu), nickel (Ni), iron (Fe), titanium (Ti), zirconium (Zr), chromium (Cr), scandium (Sc), calcium (Ca), magnesium (Mg), strontium (Sr), and barium (Ba).

Abstract: The present disclosure relates to polymer compounds for use as polymerization agents in coatings, paints or inks. In one embodiment, a polymer compound comprises a metal-bearing urethanized polymer having a metal content greater than 6% by weight, and a water solubility below 20 mg/l according to OECD 105, wherein the urethanized polymer is soluble in a low-volatile organic compound (low-VOC) solvent. Methods of producing and using such polymer compounds are also disclosed.

Abstract: The present invention relates to a supramolecular biodegradable polymer comprising a quadruple hydrogen bonding unit (abbreviated herein as “4H-unit”), a biodegradable backbone and hard blocks and a process for preparing such a supramolecular biodegradable polymer. The supramolecular polymer is specifically suitable for biodegradable articles such as biomedical implants that need high strength and/or elasticity, e.g. medical implants in the cardio-vascular field.

Abstract: Polyester polyols, processes for making them, and applications for the polyols are disclosed. Some of the polyols comprise recurring units from a digested thermoplastic polyester (e.g., recycled polyethylene terephthalate), a diol, an optional hydrophobe, and a clarifier. The clarifier, which in some cases is a bisphenol, bisphenol alkoxylate, bisphenol polycarbonate, sulfonyl diphenol, or sulfonyl diphenol alkoxylate, helps the polyol remain clear for weeks or months after its preparation. In some aspects, the clarifier is a monophenol, bisphenol, or poly-phenol having two or more phenylene rings wherein at least two of the phenylene rings lack a common molecular axis. The clarifier may also be an alkylated phenol, an epoxy resin, an epoxy novolac resin, a diphenylmethane, or a tris(aryloxy)phosphate.

Abstract: The present invention pertains to a polyurethane fluoropolymer [polymer (Fp)] obtainable by reacting: (i) at least one fluoropolymer [polymer (F)] comprising one or more recurring units derived from at least one (meth)acrylic monomer [monomer (MA)] having formula (I) here below: wherein: —R1, R2 and R3, equal to or different from each other, are independently selected from a hydrogen atom and a C1-C3 hydrocarbon group, —RH is a C1-C10 hydrocarbon group comprising from 1 to 5 hydroxyl groups, x being an integer comprised between 1 and 5, and, optionally, comprising one or more functional groups selected from double bonds, epoxy, ester, ether and carboxylic acid groups, with (ii) at least one isocyanate compound comprising at least one isocyanate functional group [compound (I)], (iii) optionally in the presence of one or more chain extenders, said polyurethane fluoropolymer [polymer (Fp)] comprising at least one bridging group having formula (a) here below: wherein: —RH is a C1-C5 hydrocarbon group comprising f

Abstract: Ammunition boxes may be equipped with a cohesive and adhesive shell restraining overlay adapted to restrain ammunition shells in a stabilized position. The shell restraining overlay provides sufficient adhesiveness to restrain a housed ammunition shell at a desired shell position, but allows for relatively effortless shell release without creating excessive movement or noise. The stabilizing overlay also stabilizes the shells from inadvertent spillage from the ammunition box.

Abstract: The present technology provides a curable resin composition that contains a urethane prepolymer having an isocyanate group, a coated amine formed by using a filler to coat solid amine having a melting point of 50° C. or higher, an isocyanate group-containing compound having an isocyanate group bonded to an aliphatic hydrocarbon group and having a hydrolyzable silyl group or (meth)acryloyl group, and a tertiary amine compound.

Abstract: The invention relates to a process for producing a ring-opening polymerization product by reacting at least one polyisocyanate and 2-oxo-1,3-dioxolane-4-carboxylic acid and subjecting the reaction product to a temperature within the range of from about 40 to about 150° C. in the presence of a catalytic amount of at least one non-nucleophilic base. The obtained polymerization product may be present as a foam and is suitable as binder, insulation material, sealant or coating and in the production of mattresses or wound pads.

Abstract: The thermoplastic polyurethane (TPU) compositions described herein have a very good snap back properties (also called rebound resilience) while still maintaining a good combination of other properties, including hardness, low-temperature flexibility, abrasion resistance, weather-ability, low density, or any combination thereof. This combination of properties make the TPU compositions described herein useful materials for applications where polyamide copolymers (COPA) and/or polyether block amide (PEBA) materials have traditionally been used over TPU.

Abstract: Disclosed is a urethane adhesive comprising a urethane resin obtained by blending a polyol with an isocyanate compound; a plasticizer; and a stabilizing agent, wherein the polyol comprises a polyether polyol, and the plasticizer comprises a castor oil based compound. Releasability of the adhesive does not degrade even though the adhesive is kept under a severe condition such as at a high temperature and at a high humidity, and the adhesive is excellent in compatibility with regard to the plasticizer and the stabilizing agent. Since the urethane adhesive is excellent in releasability with regard to a glass plate, a polarizer for liquid crystal displays and so on, it is useful as an adhesive for surface protective films which are used for windowpanes, mobile phones and the like.

Abstract: A polyurethane (meth)acrylate oligomer, having a tri-block symmetric structure BAB, comprises a polyether central block A linked by two urethane bonds to respectively two terminal hydrophobic blocs B based on hydrophobic polyester oligomers having a terminal (meth)acryloyloxy alkylene group. A curable composition (1k) comprises the oligomer and may be used for soft touch coatings in electronics, consumer goods and vehicle manufacture, as the resulting cured soft touch coating.

Abstract: The invention relates to a two-component polyurethane adhesive containing i) a polyol component including a mixture of three different polyols to ensure crosslinking for a mechanically stable adhesive bonding, and also to achieve hydrophobia to ensure that the crosslinked adhesive layer is impervious to moisture, and glass fibers, and ii) an isocyanate component containing polyisocyanates in an NCO/OH ratio of 0.9:1 to 1.5:1. The polyol component further includes a metal catalyst. The two-component adhesive has a high adhesive strength, a high glass temperature, a low curing time and a sufficiently long processing time, which can adhesively bond also substrates having uneven surfaces. The invention further relates to an article comprising the two-component polyurethane adhesive.

Abstract: The present invention provides a glove including a coagulated film of an aqueous polyurethane composition containing anionic polyurethane (A), which has an oxyalkylene group content within a range of 4 to 12 mol/kg and a urea bond content of 0.2 mol/kg or less, and an aqueous medium (B). The anionic polyurethane (A) is preferably the reaction product of polyoxytetramethylene glycol, a glycol having a carboxyl group, ethylene glycol, and diphenylmethane diisocyanate or the reaction product of polyoxytetramethylene glycol, a glycol having a carboxyl group, butanediol, and diphenylmethane diisocyanate. The average particle diameter of the anionic polyurethane (A) is preferably within a range of 0.01 to 1 ?m.

Abstract: The polyisocyanate cured product according to the present invention has an isocyanurate structure, which comprises at least one diisocyanate selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate, as a unit structure, the polyisocyanate cured product having an allophanate group, and the molar ratio of the isocyanurate group to the allophanate group (isocyanurate group/allophanate group) is 99/1 to 20/80.

Abstract: The invention provides a unique container combination comprised of a container equipped with a thermoset viscoelastomeric interfacing section which serves to confine items placed thereupon. The interfacing viscoelastomeric section may be chemically bonded to the container support or cohesively bonded thereto. The interfacing thermoset viscoelastomeric section adhesively immobilizes items placed thereupon while tenaciously clinging (chemically or adhesively) to the container supportive structure. Containers equipped with the thermoset viscoelastomeric section surprisingly create an aseptic environment especially adaptable to hygienic applications while also affording superior protection against impact damage.

Abstract: The present invention provides for the use of nitrogen compounds of formula (I) and/or of corresponding quaternized and/or protonated compounds for production of polyurethanes, compositions containing these compounds and polyurethane systems, especially polyurethane foams, which have been obtained using the compounds.