A polymer composition is described well suited for being combined with relatively short fibers. The fibers, for instance, can have a mean fiber length of less than 1,000 microns, such as less than 700 microns, such as less than 500 microns. The polymer formulation allows for intimate mixing with the fibers without having to use a sizing agent. In one embodiment, the composition contains a polybutylene terephthalate polymer combined with a thermoplastic polymer having lower crystallinity.

A liquid crystal polymer, composition, liquid crystal polymer film, laminated material and method of forming liquid crystal polymer film are provided. The liquid crystal polymer includes a first repeating unit, a second repeating unit, a third repeating unit, a fourth repeating unit, and a fifth repeating unit. The first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), the fourth repeating unit has a structure of Formula (IV), and the fifth repeating unit has a structure of Formula (V), a structure of Formula (VI), or a structure of Formula (VII)

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wherein A.sup.1, A.sup.2, A.sup.3, A.sup.4, X.sup.1, Z.sup.1, R.sup.1, R.sup.2, R.sup.3 and Q are as defined in the specification.

A polymer composition is described well suited for being combined with relatively short fibers. The fibers, for instance, can have a mean fiber length of less than 1,000 microns, such as less than 700 microns, such as less than 500 microns. The polymer formulation allows for intimate mixing with the fibers without having to use a sizing agent. In one embodiment, the composition contains a polybutylene terephthalate polymer combined with a thermoplastic polymer having lower crystallinity.

Processing aid for aiding in orienting an extruded film layer including a preponderance, by weight, of a high crystalline polypropylene is a crystalline polypropylene wax. An oriented film layer including a blend of crystalline polypropylene wax and high crystallinity polypropylene homopolymer is part of the invention. The invention includes a method of forming an oriented film layer including a preponderance by weight of a high crystallinity polypropylene and includes the steps of blending a high crystallinity polypropylene with a crystalline polypropylene wax, directing the blend through an extruder to form a film layer and then orienting the film layer. The invention includes a biaxially oriented, multi-layer film including a base layer and at least one skin layer. The base layer includes a blend of crystalline metallocene catalyzed polypropylene wax and a high crystallinity polypropylene.

The present invention relates to a polymer composition, consisting of (A) polymer comprising at least (A-1) a first semi-crystalline semi-aromatic polyamide (SSPA); and (A-2) a functionalized polymer; (B) 5-69 wt. % of reinforcing agent; and (C) 0-25 wt. % of one or more other components; wherein the SSPA is present in an amount in the range of 30-90 wt. %; has a melting temperature (Tm) of at least 300 C., measured by DSC according to ISO-11357-1/3, 2011 with heating and cooling rate of 10 C./min; and consists of: (A-1-a) 90-100 mole % of repeat units derived from (i) aromatic dicarboxylic acid and (ii) diamines, and (A-1-b) 0-10 mole % of repeat units derived from other monomers; and the diamines (ii) consist of 80-95 mole % of linear aliphatic diamine, 5-20 mole % of 2-methyl-pentamethylene diamine, and 0-10 mole % of other diamines; wherein the functionalized polymer (A-2) comprises a functionalized semi-crystalline polyolefin in an amount of 1-15 wt. %; and wherein the weight percentages (wt. %) of components (A), (B) and (C) and of SSPA and the functionalized semi-crystalline polyolefme are relative to the total weight of the composition, while the sum of (A), (B) and (C) is 100 wt. %. The invention further relates to a molded part made of the composition, a process for making the composition and a process for making the molded part.

The invention pertains to a thermoplastic vulcanizate fluorine-containing composition [vulcanizate (C)], comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising:at least one thermoplastic fluoropolymer [polymer (F)];at least one (per)fluoroelastomer [elastomer (A)], andat least one plasticizer selected from the group consisting of organic esters [plasticizer (P)].

A battery casing including a container configured to house an electrode assembly, wherein the container includes a bottom wall and a plurality of side walls, the bottom wall and the plurality of side walls are integrated to define an open side opposite to the bottom wall and to define a space for housing the electrode assembly, at least one of the bottom wall and plurality of the side walls includes a composite including a thermotropic liquid crystal polymer and a nanoclay dispersed in the thermotropic liquid crystal polymer, wherein the main chain of the thermotropic liquid crystal polymer includes an aromatic oxycarbonyl repeating unit and an alkylene moiety-containing repeating unit, and at least a portion of the nanoclay is present in an exfoliated state, and an X-ray diffraction pattern of the composite does not exhibit an intrinsic peak corresponding to the nanoclay.

A polymer composition that contains an aromatic polymer in combination with a tribological formulation is provided. The polymer composition may exhibit a low degree of surface friction that minimizes the extent to which a skin layer is peeled off during use of a part containing the composition (e.g., in a camera module). For example, the polymer composition may exhibit a dynamic coefficient of friction of about 1.0 or less and/or a wear depth may be about 500 micrometers or less as determined in accordance with VDA 230-206:2007.

A process for manufacturing particles including a stereocomplex of poly-D-lactide (PDLA) and poly-L-lactide (PLLA), including the steps of: extruding a melt including 30-70 wt. % of PDLA and 70-30 wt. % of PLLA through an sc-PLA formation zone in a twin-screw extruder, wherein the formation zone is operated at a barrel temperature above the melting temperature of the PDLA and PLLA and below 220? C.; wherein the sc-PLA formation zone is followed by a finishing zone which is operated at a barrel temperature below 160? C.; wherein the finishing zone is followed by the end of the extruder which has a die-head resistance of 0; and recovering solid stereocomplex particles from the end of the extruder. The stereocomplex particles find use in various applications, e.g., in fracking fluids, as filler, as nucleating agent, in particular in the molding of semi-crystalline PLA, or as a starting material for the manufacture of sc-PLA products.

Provided is a polymer blend composition comprising linear low density polyethylene, a propylene polymer generally having rubber dispersed therein, and a combination of a propylene copolymer and an ethylene copolymer. In one embodiment, there is provided a polymer blend composition comprising 20 to 65 weight percent of a propylene polymer having from 10-60% crystallinity, 30-60 weight percent of a linear low density polyethylene, and a combination of the propylene copolymer and the ethylene copolymer comprising the remainder of the composition.