An embodiment of the present disclosure provides fine cellulose fibers that satisfy, in measurement using an automatic fiber shape analyzer, all of (i) the length weighted average fiber length of fibers having a fiber length of at least 100 ?m is 110-500 ?m, (ii) the average fiber diameter is at most 42.5 ?m, (iii) the fine fiber area ratio is at most 90%, (iv) the number frequency of fibers having a fiber length of 20-56 ?m is at most 97% among fibers having a fiber length of less than 100 ?m, (v) the number frequency of fibers having a fiber length of at least 411 um is at most 54% among fibers having a fiber length of at least 100 ?m, and (vi) the average fiber diameter is 20-150 nm in terms of specific surface area.

A swab-resistant downhole tool comprising a body and a sealing element, wherein at least a portion of the sealing element is composed of a shape memory polymer, the shape memory polymer having a glass transition temperature (Tg), and exhibiting a resilient characteristic above the Tg and a rigid characteristic below the Tg, and wherein the Tg is in the range of about 50 C. to about 150 C.

An aqueous drag reducer having the components of water, a hydrocarbon soluble rheology modifier and an ultra-high molecular weight polymer. This aqueous drag reducer is also soluble in hydrocarbons.

Provided is a process for producing a coating on a substrate comprising one or more steps of crushing a dried layer of a foamed aqueous coating composition, wherein the aqueous coating composition comprises a collection of multi-stage copolymer particles having a weight average diameter of 2-20 m, wherein said multi-stage copolymer particles comprise a core having a glass transition temperature (Tg) of 20 C. or less. Also provided is a coated substrate made by that process.

A polylactic acid solid composition includes: a polylactic acid having a weight average molecular weight of not more than 40,000, which is measured in terms of polystyrene standard by GPC; and a basic compound of an alkali metal or an alkaline earth metal, which is a residue of a molecular weight reduction accelerator. The basic compound is contained in an amount in a range of 0.5 to 20 mass %.

An article is described comprising a first film layer comprising polylactic acid polymer (semicrystalline polylactic acid polymer; amorphous polylactic acid polymer; or a mixture thereof); a second (e.g. polyvinyl acetate) polymer having a Tg of at least 25? C.; plasticizer. In some embodiment, the film layer further comprises inorganic pigment and/or hydrolysis stabilizer. In other embodiments, the film has a net melting endotherm, ?H.sub.nm1, of less than 10 J/g. Also described are methods of making a graphic film.

A fireproof material incorporating aerogel with an organic foam material and a method for making the same are provided. The method is carried out as follows: A. a mixed solution of a precursor and an organic solvent is added with an acid catalyst and becomes an anhydrous aerogel solution through hydrolysis; B. the anhydrous aerogel solution is added with an aqueous alkali catalyst solution and forms an aerogel solution through condensation; C. an organic foam material is impregnated with the aerogel solution such that aerogel is generated by gelation and is incorporated with the organic foam material, forming a three-dimensional reticular structure; and D. the organic foam material incorporated with the aerogel is dried and then shaped to produce a fireproof material. The fireproof material is highly proof against fire and can pass the limiting oxygen index test.

Provided is a method of preparing a superabsorbent polymer which exhibits more improved liquid permeability and absorption rate while maintaining excellent absorption performance. The method of preparing the superabsorbent polymer may include the steps of: performing crosslinking polymerization of water-soluble ethylene-based unsaturated monomers having acidic groups which are at least partially neutralized in the presence of an internal crosslinking agent to form a water-containing gel polymer including a crosslinked polymer; drying, pulverizing, and size-sorting the water-containing gel polymer to form a base polymer powder; performing surface-crosslinking of the base polymer powder using a surface-crosslinking solution including one or more surface-crosslinking agents in the presence of first alumina particles; and adding second alumina particles to the surface-crosslinked base polymer powder and then mixing them with each other.

This invention relates to improved water soluble, polyvinyl alcohol based film packaging. More particularly, this invention relates to the use of polyvinyl alcohol based films having a defined crystalline structure, in antimicrobial packaging applications.

The present invention relates to a thermally conductive polymer composition. The thermally conductive polymer composition comprises (a) 30 to 60 parts by weight of a polymer, and (b) 100 parts by weight of a boron nitride filler comprising, (b-1) 70 to 99 parts by weight of a spherical boron nitride filler, and (b-2) 1 to 30 parts by weight of a sheet boron nitride filler having a thickness of 5 to 500 nm, a surface area of 4 to 50 m.sup.2/g and an aspect ratio of 100:1 to 10000:1.