The present invention relates to a thermoplastic polyurethane fiber and a method for producing the same. A thermoplastic polyurethane material is firstly provided and subjected to a molten extruding process to form a fiber material. Next, an extension process is performed to the fiber material to obtain the thermoplastic polyurethane fiber of the present invention. The thermoplastic polyurethane fiber has a lower thermal shrinking property, thereby meeting requirements of the application.

A coating film obtained from a composition containing a polyaspartic acid ester and a fluoropolymer. Also disclosed is fluorine-containing coating film including a urethane bond and a urea bond, and exhibiting a corrosion from scribe of 1 mm or shorter. Both coating films have a thickness of 100 to 1000 μm. Also disclosed is a laminate including a base and one or the other of the coating films.

A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

A novel primer composition contains aldimine and/or epoxy resins, a process of making such primer to be used in glass bonding adhesive kit.

The present disclosure relates to sealed isocyanate resin compositions. The resin compositions may be used for additive manufacturing. One embodiment of the invention includes a photopolymerizable resin for additive manufacturing, the resin comprising: a blocked isocyanate; at least one monomer or oligomer; and a multifunctional nucleophile.

One-part, curable compositions that have a soft feel when applied as a coating/film and cured, may include a) at least one isocyanurate tri(meth)acrylate or derivative thereof; and at least one of components b)-e), wherein: b) is at least one urethane diacrylate; c) is at least one monofunctional or difunctional reactive diluent; d) is at least one solvent; and e) is additives. The one-part, curable compositions are advantageous with respect to softness and tailorability of softness as well as other properties such as mar resistance, abrasion resistance, stain resistance and chemical resistance. Due to their advantageous properties, embodiments of the one-part, curable compositions described herein are viable for a wide range of coating applications including automotives, aeronautics, cosmetics, small appliances, packaging and consumer electronics. Methods of making and using the one-part, curable are also described herein.

Provided is a method for producing a resin lens, comprising: A) mixing a polyisocyanate, a modified isocyanate, a catalyst and a release agent, and performing vacuum defoaming at 0˜30° C. for 10˜90 min to obtain a material a; B) mixing the material a with a sulfur-containing compound, and performing vacuum defoaming at 15˜20° C. for 20˜120 min to obtain mixed monomers; and C) completing casting of the mixed monomers, and curing to obtain a resin lens. The present disclosure uses polyisocyanate and a modified isocyanate at the same time to prepare a resin lens with higher glass transition temperature and higher surface hardness without producing bank mark and edge fogging. The present disclosure further provides a method for producing modified isocyanate. The obtained modified isocyanate used with polyisocyanate further improves the glass transition temperature and surface hardness of the resin lens without producing bank mark and edge fogging.

A substrate at least partially coated with an anti-fingerprint coating is prepared from a coating composition that includes: (a) an organic solvent; and (b) an alkoxysilane functional polymer having at least one ester linkage, at least one urethane linkage, and at least one alkoxysilane functional group. Further, the polymer is prepared from components including: (i) an active hydrogen functional compound having a hydroxyl group, amino group, thiol group, or a combination thereof; (ii) an intramolecular cyclic ester; and (iii) an isocyanate functional compound. The isocyanate functional compound (iii) has one or more alkoxysilane functional groups. Alkoxysilane functional polymers and coating compositions containing the same are also included.

Antimicrobial cationic polycarbonates and polyurethanes have been prepared comprising one or more pendent guanidinium and/or isothiouronium groups. Additionally, antimicrobial particles were prepared having a silica core linked to surface groups comprising a guanidinium and/or isothiouronium group. The cationic polymers and cationic particles can be potent antimicrobial agents against Gram-negative microbes, Gram-positive microbes, and/or fungi.

A downhole sealing device, a well system employing a downhole sealing device, and a method for sealing within a wellbore. The downhole sealing device, in one aspect, includes one or more downhole sealing features, and an elastomeric element comprising a thiourethane/acrylate polymer coupled to the one or more downhole sealing features. In at least one aspect, the elastomeric element is operable to be compressed in a downhole application against a tubular as a seal.