The invention relates to a process for producing shaped articles comprising the steps of: compounding a polymer composition (A) containing a polyamide, a halogen-free melamine based flame retardant and at most 15 wt. % of glass fibers into pellets, compounding a polymer composition (B) containing a polyamide, more than 15 wt. % of glass fibers, and not containing halogen-free melamine based flame retardant into pellets, producing a mixture comprising the pellets of polymer composition (A) and (B), molding the mixture comprising the pellets of polymer composition (A) and (B) into shaped articles.

A hydrogel based on a cross-linked -polyglutamic acid and -polylysine polymer is obtained by cross-linking of -polyglutamic acid with -polylysine, and it is a polymer having the following constitutional unit, wherein, m is a natural number of 15 to 45, n is a natural number of 3900 to 17000, and x is a natural number of 5 to 40. It also discloses a preparation method of as-described hydrogel and its application in preparation as a medical wound dressing.

The present invention discloses a -polylysine hydrogel and the preparation method and application of the as-described -polylysine hydrogel. The polylysine hydrogel is non-toxic to a recipient, and has biodegradability and biocompatibility. The wound tissue healing material prepared by the present invention can be used in wound tissue adhesion in an efficient, stable, safe manner.

A cellulosic particle contains cellulose as its base constituent, and the percentage water absorption of the cellulosic particle measured by method B in ISO 15512:1999 is 11% or more and 20% or less.

A fiber reinforced thermoplastic resin molded article with good mechanical characteristics, particularly bending elastic modulus, appearance quality, and in particular warpage suppression property. A fiber reinforced thermoplastic resin molded article includes a reinforcing fiber (A) having a weight average fiber length of 0.4 mm or more and 1.5 mm or less and a thermal conductivity in the fiber axis direction of 5 W/mK or more, a polyamide resin (B) with a melting point of 210 C. or less used as matrix resin, and a modifying agent (C), wherein the reinforcing fibers (A) accounts for 10 parts by mass or more and 30 parts by mass or less, the polyamide resin (B) accounting for 60 parts by mass or more and 89 parts by mass or less, and the modifying agent (C) accounting for 1 part by mass or more and to 10 parts by mass or less.

Described are rheology modifier compositions comprising cross-linked poly(amino acid) and methods of their use in aqueous compositions.

A copolyamide including at least two distinct units A and X.sub.1Y of formula A/X.sub.1Y, wherein: A is a repeating unit obtained by polycondensation of: at least one C.sub.9 to C.sub.18 amino acid, or at least one C.sub.9 to C.sub.18 lactam, or at least one C.sub.4-C.sub.36 dicarboxylic acid Cb; X.sub.1Y is a repeating unit obtained from the polycondensation of at least one C.sub.9 to C.sub.18 linear aliphatic diamine (X.sub.1), and at least one aromatic dicarboxylic acid (Y), to prepare a composition comprising between 35 and 65% of reinforcing fibers, relative to the total weight of the composition, and for which the flexural modulus or tensile modulus, measured after an identical conditioning, does not vary by more than 20% in the temperature range from 20 C. to 40 C.

The present invention relates to a composite powder, in particular suitable for additive manufacturing, wherein said composite powder comprises composite particles comprising:at least one polymer matrix chosen among polyhydroxyalkanoates (PHA), andat least one auxiliary matrix chosen among biobased fillers and biobased waxes.

The present invention relates to processes and systems for preparing nanoparticles, cellular or viral membranes and/or cellular or viral membrane coated nanoparticles using or comprising, inter alia, a multi-inlet vortexing reactor, tangential flow filtration (TFF) and/or a high shear fluid processor such as a microfluidizer (or a microfluidizer processor). The present invention also relates to the nanoparticles, cellular or viral membranes and/or cellular or viral membrane coated nanoparticles prepared by the present processes and systems, and the uses and/or applications of the nanoparticles, cellular or viral membranes and/or cellular or viral membrane coated nanoparticles.

In some aspects, systems for forming hydrogels are provided that comprises (i) a reactive multi-arm polymer that comprises three or more polymer arms linked to a core region, at least three of the polymer arms comprising a reactive moiety comprising a cyclic-imidyl-oxycarbonyl- end group and (ii) a polyamino compound comprising at least two amino (NH.sub.2) groups, wherein the reactive multi-arm polymer and the polyamino compound react to form crosslinked hydrogels that do not contain ester groups and have long-term stability in vivo. In other aspects, the present disclosure pertains to crosslinked hydrogels formed from such systems and methods of treatment using such systems.