The bio-degradable foam prepared from a composition comprising a polyhydroxyalkanoate (PHA) resin of which crystallinity is controlled can be biodegraded even in the ocean while having excellent physical properties, thermal property and processability, and can be effectively prepared by means of supercritical carbon dioxide foaming and the like.

The invention relates to methods and a novel powdered curable monomer which may be used to manufacture bulk polymers, adhesives and coatings composite materials with high percentage weight inclusions of particulate filler materials, more specifically to fibre reinforced polymer composite materials with high percentage weight inclusions of particulate filler materials. The preferred particulate filler materials are carbon nanotubes. The method according to the invention allows greater than 0.5 wt % of carbon nanotubes, typically greater 10% wt of carbon nanotubes or other high aspect ratio fillers to be readily incorporated in the resin matrix, before being applied to the fibre reinforcing plys.

An aqueous binder composition is provided for use in the formation of fiber insulation and non-woven mats that comprises a reaction product of one or more Liquid Polyol Monomers; itaconic acid, its salts or anhydride; and a C4 to C6 polyol selected from the group consisting of pentaerythritol, trimethylol propane, neopentyl glycol, and mixtures thereof. The molar ratio of the combined alcohols (Liquid Polyol Monomers and C4 to C6 polyols) to itaconic acid is at least 2:1, wherein the molar ratio of Liquid Polyol Monomers to C4 to C6 polyols is from about 1:1 to about 30:1.

There is provided a composite material including scaly fillers made of an inorganic material and a binding resin that is a thermosetting resin which binds the fillers. The composite material 1 is a foaming material in which a plurality of voids is dispersed therein, and the fillers accumulate on inner walls of the voids so that flat surfaces of the fillers overlap.

The invention relates to a process for the curing of latently reactive, heat-curable compositions which do not harden at room temperature. The composition includes a polymer obtainable via reaction of certain compounds having two aldehyde groups with polyacrylate compounds having two or more acrylate groups, and also a compound which bears at least two thiol groups.

Provided herein are methods, compositions, devices, and systems for the 3D printing of biomedical implants. In particular, methods and systems are provided for 3D printing of biomedical devices (e.g., endovascular stents) using photo-curable biomaterial inks (e.g., or methacrylated poly(diol citrate)).

A molded article is provided that has a resin matrix having a surface, the resin matrix formed from cross-linked polyester resin or vinyl-ester resin. Glass fibers are crossed linked to the resin matrix via a silane coupling agent reactive with the matrix. A molded article is provided that has a resin matrix having a surface, the resin matrix formed from cross-linked polyester resin or vinyl-ester resin. Glass fibers each covalently bonded to at least one microspheroid matrix via a silane coupling agent reactive with a surface of the at least one microspheroids are present in increase the fiber pull strength. A sizing composition for treating glass fibers is also provided for use in such articles.

A method for producing bis(2-hydroxyethyl)terephthalate is disclosed. The method includes recovering and reusing ethylene glycol with an acetate removed, after the glycolysis of a waste polyester. According to the method, an acetate is not concentrated even though ethylene glycol is reused in a continuous process, leading to bis(2-hydroxyethyl)terephthalate with excellent purity and quality.

A method of processing a carbon fiber tow includes the steps of providing a carbon fiber tow made of a plurality of carbon filaments, depositing a sizing composition at spaced-apart sizing sites along a length of the tow, leaving unsized interstitial regions of the tow, and cross-cutting the tow into a plurality of segments. Each segment includes at least a portion of one of the sizing sites and at least a portion of at least one of the unsized regions of the tow, the unsized region including and end portion of the segment.

A carbon fiber layer having a carbon coating is provided. The disclosed carbon fiber layer having a carbon coating includes: a carbon fiber layer in which a plurality of carbon fibers are arrayed; and a thin carbon film layer, comprising carbon, coated on the surface of the carbon fiber layer.