According to this invention, there are provided polytrimethylene ether glycol having low moisture content and narrow polydispersity and a method for preparation thereof.

The techniques described herein relate to hydrogen peroxide plasma surface modification. In some embodiments, a method includes providing a mixture including hydrogen peroxide vapor from a source, wherein a concentration of the hydrogen peroxide vapor in the mixture is substantially stable over time. The method further includes forming a hydrogen peroxide plasma from the mixture and exposing a material to the hydrogen peroxide plasma in a chamber.

A composite gel in one aspect of the present disclosure comprises a substance prepared by gelling a raw material composition that comprises, as main components, a hydroxyl group-containing organic polymer compound and one of a hydroxyl group-containing inorganic compound and an inorganic oxide. A method for manufacturing the composite gel in one aspect of the present disclosure comprises a first process of gelling a raw material composition that comprises, as main components, a hydroxyl group-containing organic polymer compound and at least one of a hydroxyl group-containing inorganic compound or an inorganic oxide; and a second process of drying and subsequently pulverizing a resulting product in the first process to thereby obtain a composite gel fine powder.

The invention provides for novel thermo-responsive polymers and compositions comprising the same. In some embodiments, the polymers are water soluble, pH-degradable and have tunable lower critical solution temperatures. Other aspects of the invention include micelles and gels comprising the thermo-responsive polymers and derivatives thereof, as well as methods of delivering therapeutic agents comprising administering a biodegradable gel or micelle comprising a polyacetal compound cross-linked with a linker.

Disclosed are co-solvents as well as methods of using thereof in oil and gas operations. Described herein are also methods of displacing an unrefined petroleum material in contact with a solid material, said method comprising: contacting the unrefined petroleum material with the compound described herein or a composition described herein, wherein the unrefined petroleum material is in contact with the solid material; and allowing the unrefined petroleum material to separate from the solid material, thereby displacing the unrefined petroleum material in contact with the solid material.

A composition [composition (C)] comprising at least one poly(aryl ether ketone) polymer having a melt flow rate (MFR) equal to or higher than 8 g/10 min at 400.degree. C. and under a load of 2.16 kg, [(PAEK.sub.HMF) polymer], from 0.1 to 50 wt. % of at least one poly(tetrafluoroethylene) polymer having a D50 particle size equal to or below 10.mu.m, and having a melt viscosity equal to or lower than 1.times.10.sup.5 Pas at 372.degree. C., from 0 to 50% wt. % of at least one poly(aryl ether sulfone) polymer having a melt flow of at least 15 g/10 min at 365 degree C. and under a load of 5.0 kg, [(PAES) polymer], from 0 to 50% wt. % of at least one reinforcing filler, with the proviso thatshould the composition (C) comprise a (PAES) polymer having MFR of more than 22 g/10 min, then the (PTFE) polymer is present in an amount of less than 40 wt. %, andshould the composition (C) comprise a (PAES) polymer having MFR of 22 g/10 min or less, then the (PTFE) polymer is present in an amount of less than 30 wt. %, and wherein all % are based on the total weight of the composition (C).

The invention relates to an orthopaedic implant comprising a surface arranged to contact bone in a human or animal body. The surface of said implant comprises a polymeric material which includes a repeat unit of general formula

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The polymeric material is polyetheretherketone, and said surface is a plasma treated surface.

The present invention discloses a freezing-illumination method for preparing porous gels, comprising the steps of: (a) synthesizing the gels containing dynamic exchangeable bonds; (b) illuminating the gels under frozen state by certain wavelength light source; (c) elevating the temperature and melt the ice crystals within the gels to get the porous structure. The dynamic exchangeable bonds existing in the gels include double/multi-sulfur bond, hydrazine bond, boronic ester bond. Catalyst is also included in the gel composition to activate the bond exchange reactions under illumination. This new method for preparing porous gels is easy to operate and suitable for most kinds of gels. Meanwhile, it can spatially control the pore structure within the gels by local illumination.

The objective of the present invention is to obtain a carbon fiber substrate having high levels of both heat resistance and moldability, and to provide a prepreg and a porous structure having high heat resistance by using said carbon fiber substrate. The present invention is a carbon fiber substrate which includes a carbon fiber (A) and a resin composition (B) covering the surface of the carbon fiber (A), wherein the carbon fiber (A) forms a non-woven fabric. The tensile strength of the carbon fiber substrate after heating at 300 C. for 5 minutes is at least 110% of the tensile strength of the carbon fiber substrate before the heating.

[Problem] The present invention provides a polyether ether ketone decomposition method for efficiently decomposing polyether ether ketone, and a novel compound synthesized by using a decomposition product obtained by the polyether ether ketone decomposition method as a raw material.

[Solution] A polyether ether ketone decomposition method for decomposing polyether ether ketone, including a first reaction step of reacting the polyether ether ketone with a base and at least one of an alkanethiol, an aromatic mercaptan, sodium sulfide, and elemental sulfur in an organic solvent. Polyether ether ketone can be efficiently decomposed by this polyether ether ketone decomposition method.