A polymerizable composition for an optical material includes (A) one or more isocyanate compounds selected from aliphatic isocyanate compounds and alicyclic isocyanate compounds, (B) an active hydrogen compound having two or more functional groups, and (C) a photochromic compound.

Systems and methods for protecting a user from external contamination with a mask. Exemplary embodiments may include a mask including an open threaded portion couplable to a filter; one or more extrusions on a front of the unibody mask to mount straps to the unibody mask; wherein the mask is made of silicone, and wherein the unibody mask presses against a face such that the unibody mask seals an interior of the unibody mask from an exterior of the unibody mask.

Articles of manufacture possessing corrosion resistance characteristics are described, in particular for use in the chlor-alkali and other industries. The articles are formed from a resin composition, e.g., a cyclic olefin composition, polymerized with a Group 8 olefin metathesis catalyst. In particular aspects, an electrolytic cell component, such as a cell cover for use in the electrolysis of brine, may be formed from the resin composition. Among other benefits, such articles provide improved corrosion resistance compared to articles molded from other resin compositions, such as fiberglass reinforced polyesters and vinyl esters, and two-component dicyclopentadiene (DCPD) resins comprising molybdenum or tungsten pre-catalysts.

A core-shell microneedle system and a method of manufacturing the microneedle system provides a pulsatile drug delivery system which is programmed to release drugs/vaccines at predictable times using biodegradable polymers and with controllable dosages. This microneedle system can be fully embedded into the skin and then release drugs/vaccines as sharp bursts in a timely manner, similar to multiple bolus injections.

Disclosed herein are ethylene-based polymers having low densities and narrow molecular weight distributions, but high melt strengths for blown film processing. Such polymers can be produced by peroxide-treating a metallocene-catalyzed resin.

The present disclosure relates to a solid hair cosmetic composition comprising—based on the total weight of the cosmetic composition—about 30.0 to about 60.0% by weight of at least one polyhydric alcohol, and optionally: about 0.1 to about 15.0% by weight of at least one cationic surfactant, about 0.1 to about 20.0% by weight of at least one saturated or unsaturated, branched or unbranched C.sub.8-C.sub.30 alcohol and/or a saturated or unsaturated, branched or unbranched C.sub.8-C.sub.30 carboxylic acid and/or a salt of a saturated or unsaturated, branched or unbranched C.sub.8-C.sub.30 carboxylic acid, and about 0.1 to about 40.0% by weight of at least one polysaccharide, as well as production and application methods and uses thereof.

An object of the present invention is to provide a golf ball striking a good balance between flight distance on driver shots and spin rate on approach shots, and excellent in stain resistance and shot feeling. The present invention provides a golf ball comprising a paint film, wherein a base resin of the paint film contains a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition containing a urethane polyol having a polyether diol with a number average molecular weight in a range from 800 to 3,000 as a constituent component, and the following requirements are satisfied:
Mp≦200×X−75
Mp≦100
Minm−Moum>40
Moum−Mc<5
Tinm≧Toum>Tc>Tp
(Tinm×Minm)/(Toum×Moum)>2.0
(Toum×Moum)/(Tc×Mc)<3.0
(Tc×Mc)/(Tp×Mp)>10.0
[where Mp, Minm, Moum, and Mc represent a 10% elastic modulus (kgf/cm.sup.2) of the paint film, inner intermediate layer, outer intermediate layer and cover, respectively; Tp, Tinm, Toum, and Tc represent a thicknesses (mm) of the paint film, inner intermediate layer, outer intermediate layer and cover, respectively; and X represents a molar ratio (NCO/OH) of a NCO group in the polyisocyanate composition to a OH group in the polyol composition.].

A method for efficiently manufacturing and fabricating microfluidic chips, where a base mold is formed to have positive-relief features used to cast an intermediary template chip with negative-relief features having dimensions of a scale in the micron range. The intermediary template chip is used to case a production mold, which is formed of a reinforced epoxy resin that, once hardened into a solid epoxy member, can withstand the structural pressures of a CNC machining system. The production mold can be refined by a CNC machining, where the refined production mold is then used to cast production chips to be used as microfluidic chips.

Embodiments of the invention are directed to an automated crayon-molding device comprising a crayon-receiving member, an automated heating element, a crayon-melting chamber that is heated to a melting temperature by the automated heating element, and at least one mold. The crayon-receiving member receives the crayon at one end and has a closure mechanism at another held, preventing the crayon from entering in the crayon-melting chamber until it reaches a melting temperature. Once the inside of the crayon-melting chamber, the crayon melts and drips into a mold configured to receive melted wax. Embodiments of the invention also include a method for assembling an automated crayon-molding device and a system for molding crayons that includes a crayon-receiving member, an automated heating element, a crayon-melting chamber, a drawer positioned underneath the crayon-melting chamber, and at least one mold.

Disclosed is a self-wetting porous membrane comprising an aromatic hydrophobic polymer such as polysulfone and a wetting agent comprising a copolymer of formula A-B or A-B-A, wherein A is a hydrophilic segment comprising a polymerized monomer of the formula (I): CH.sub.2═C(R.sup.1)(R.sup.2), wherein R.sup.1 and R.sup.2 are as described herein, and B is an aromatic hydrophobic polymeric segment, wherein segments B and A are linked through an amidoalkylthio group. Also disclosed is a method of preparing a self-wetting membrane comprising casting a solution containing an aromatic hydrophobic polymer and the wetting agent, followed by subjecting the cast solution to phase inversion. The self-wetting porous membrane finds use in hemodialysis, microfiltration, and ultrafiltration.