A process for preparing particles of polyphenylene sulfide polymer (PPS), based on the use of a polyester polymer (PE) comprising units from a dicarboxylic acid component and a diol component, wherein at least 2 mol. % of the diol component is a poly(alkylene glycol). The process comprises the melt-blending of the PPS with the PE, the cooling the blend and the recovery of the particles by dissolution of the PE into water. The present invention relates to PPS particles obtained therefrom and to the use of these particles in SLS 3D printing, coatings and toughening of thermoset resins.

Provided are a substrate with a functional fine line having excellent optical properties and excellent adhesion of the functional fine line, and a method for forming the functional fine line. The substrate with a functional fine line according to the present invention has an undercoat layer including a hydrophobically modified polyester resin on the substrate, and has a functional fine line including a deposit of functional microparticles and having a line width of 1 m or more and 10 m or less on the undercoat layer. The method for forming a functional fine line according to the present invention includes forming an undercoat layer including a hydrophobically modified polyester resin on a substrate, and then forming a functional fine line including a deposit of functional microparticles and having a line width of 1 m or more and 10 m or less on the undercoat layer.

A heat-shrinkable polyester film is made from a polyester resin composition which includes an amorphous polyalkylene benzenedicarboxylate resin and a polyester elastomer resin. The polyester elastomer resin includes hard segments and soft segments, and is prepared by copolycondensation of an aromatic dicarboxylic acid and a diol component. The diol component includes a C2-C4 alkylene glycol for the hard segments and a polyethylene glycol with an average molecular weight not greater than 400 for the soft segments. The soft segments of the polyester elastomer resin are in an amount ranging from 1 part by weight to 2 parts by weight based on 100 parts by weight of the polyester resin composition.

A method of manufacturing an article includes melt-mixing a first polymer with a second polymer and optionally an additive to form a thermoplastic composition, the first polymer having a first melting point or a first glass transition temperature T.sub.1, the second polymer having a second melting point or a second glass transition temperature T.sub.2 that is 30? C. to 150? C. higher than T.sub.1: and forming the article from the thermoplastic composition at a temperature between T.sub.1 and T.sub.2, such as via sheet extrusion, thermoforming, pipe extrusion, extrusion molding, injection molding, extrusion molding, blow molding, compression molding, or additive manufacturing. The first polymer and the second polymer can have a volume ratio of 75:25 to 35:65 with a co-continuous morphology in the thermoplastic composition, with the second polymer providing a network for containing a melt of the first polymer.

The invention relates to a process for preparing particles of polyphenylene sulfide polymer (PPS), based on the use of a polyester polymer (PE) comprising units from a dicarboxylic acid component and a diol component, wherein at least 2 mol. % of the diol component is a poly(alkylene glycol). The process comprises the melt-blending of the PPS with the PE, the cooling the blend and the recovery of the particles by dissolution of the PE into water. The present invention relates to PPS particles obtained therefrom and to the use of these particles in SLS 3D printing, coatings and toughening of thermoset resins.

Disclosed are liquid crystal polymer particles capable of reducing dielectric loss tangent while suppressing surface roughness of the resin film, when added to a resin film. The liquid crystal polymer particles have a melting point of 270? C. or higher, wherein cumulative distribution 50% diametre D.sub.50 in the particle size distribution is 20 ?m or less, and cumulative distribution 90% diametre D.sub.90 is 2.5 times or less of D.sub.50.

The present invention can provide a polyarylate obtained from a dihydric phenol component and an aromatic dicarboxylic acid component. The polyarylate is characterized in that the dihydric phenol component contains a compound represented by general formula (A) or (B) as a primary raw material, and the pencil hardness of the polyarylate is H or higher.

##STR00001## (In the formula, R.sub.1 and R.sub.2 each independently denote a hydrogen atom, an alkyl group having 1-6 carbon atoms or a phenyl group. However, neither R.sub.1 nor R.sub.1 represents a methyl group.)

##STR00002## (In the formula, R.sub.3 and R.sub.4 each independently denote a hydrogen atom or a methyl group. In addition, a is an integer between 4 and 11. However, a is not 5 if R.sub.3 and R.sub.4 are both hydrogen atoms.)

A vinylbenzylated phenol compound represented by General Formula (1) below is provided. ##STR00001##
(In General Formula (1), Ar.sup.0 is a bifunctional phenol compound residue having one or more monocyclic or polycyclic aromatic nuclei, R.sup.1 to R.sup.5 may be the same or different and are each hydrogen or a methyl group, and p is an integer of 1 to 4.)

A packaging with anti-microbial properties has a substrate, and a coating having a first polymeric component selected from the group consisting of polyacrylic resins, polyvinyl butyral polyurethanes, polyesters, polyvinyl alcohols, cellulosic polymers and mixtures thereof, a low adhesion, slip or release agent selected from the group consisting of polysiloxanes, carnauba wax, lecithin, fatty acids, fatty acid amides, fatty acid esters, magnesium stearate, vegetable oils, and mixtures thereof, an anti-microbial agent, and optionally one or more functional agents selected from the group consisting of a defoaming agent, a coalescing agent, a wetting agent, a cross-linking agent, and mixtures thereof. The coating has from 50 to 99.49% by weight of the first polymeric component, from 0.5 to 35% by weight of the low adhesion, slip or release agent, from 0.01 to 15% by weight of the anti-microbial agent, and from 0 to 10% by weight of functional agents, the percentage

A biodegradable film comprises from 1 wt % to 10 wt % of a first polyhydroxyalkanoate resin component, from 50 wt % to 90 wt % of a second polyhydroxyalkanoate resin component, and from 5 wt % to 48 wt % of a polybutylene adipate terephthalate resin. Specifically, the first poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) resin contains a first mol % of 3-hydroxyhexanoate structural units, and the second poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) resin contains a second mol % of 3-hydroxyhexanoate structural units, while the second mol % is higher than the first mol %, e.g., by 2-40 mol %, or 3-30 mol %, or 4-20 mol %.