An object of the present invention is to provide a method for obtaining a golf ball having excellent impact durability. The present invention provides a method for producing a golf ball, comprising a first step of kneading (a) a base rubber, (b) an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a metal salt thereof as a co-crosslinking agent, (c) a crosslinkable compound having two or more polymerizable unsaturated bonds in a molecule thereof, and (d) a crosslinking initiator to prepare a core rubber composition; a second step of producing the spherical core from the core rubber composition at a molding temperature in a range from 100° C. to 150° C.; and a third step of molding the at least one cover layer covering the spherical core on the spherical core.

This document describes systems and processes for forming synthetic molded slabs, which may be suitable for use in living or working spaces (e.g., along a countertop, table, floor, or the like).

Separating membrane of plastic material, made up of a bossed and waterproof sheet which is coupled with a permeable base layer. The bosses are of the cylindrical type with a double diameter and have such a shape and arrangement as to feature improved adhesion on both faces. The gripping of the adhesive is increased in order to obtain greater tear strength, on the upper face, and at the same time increases the area of contact with the base layer for a greater resistance to delamination on the lower face. In particular, inside each chamber there is an internal crown, which divides it like a necking into two superimposed compartments having the same diameter, wherein the first compartment has a depth amounting to at least ⅓ of the total. A production process for obtaining the membrane is also disclosed.

The present invention includes an injection moldable/extrudable composite that preserves at least 80% or enhances the primary physical properties of compression molded polymer, the composite comprising, e.g., an Ultra High Molecular Weight Polyethylene (UHMWPE) and graphene/graphite oxide or graphene oxide, with or without polypropylene.

A method for producing a fiber-reinforced plastic outer skin component for a vehicle includes the following steps: a) providing a semifinished fiber product which includes at least one fiber layer with predetermined fiber orientation; b) applying an uncured plastic matrix in the form of an epoxy resin-based or polyurethane-based matrix system to the semifinished fiber product; c) placing the semifinished fiber product provided with plastic matrix into a mold; and d) pressing the semifinished fiber product in the mold in order to shape and cure the semifinished fiber product to form a fiber-reinforced plastic component. A shrinkage-reducing additive in the form of filler particles is admixed with the uncured plastic matrix and the uncured plastic matrix is applied to the surface of the semifinished fiber product that in the finished component faces the visible side of the component.

Provided is a feedstock comprising a polyolefin homopolymer such as polypropylene, polybutylene terephthalate (PBT) and a pigment having a refractive index of at least 1.5 complexed by maleic anhydride functionalized polypropylene (MAH-PP). Further provided are polyolefin films having a cavitated layer comprising the feedstock and methods of making such films.

The present invention relates to a mono or multi-layer biaxially oriented polypropylene film having a density of ≤0.72 g/cm.sup.3, a process for producing the mono or multi-layer biaxially oriented polypropylene film, the use of at least one natural calcium carbonate as cavitation agent in the mono or multi-layer biaxially oriented polypropylene film, an article comprising the mono or multi-layer biaxially oriented polypropylene film as well as the uses.

The subject invention provides compositions, systems, and methods for additive manufacturing (AM), including three dimensional printing (3DP) using Digital Light Processing (DLP), of Lunar regolith and Lunar regolith simulants including Greenland Anorthosite Lunar Regolith (GALR) with a photocurable thermosetting polymer. Certain embodiments provide a high solid content of regolith, for example, about 60 wt. % GALR; together with a lower content of additives, for example, about 40 wt. % of a photocurable thermosetting polymer. Embodiments of the provided recipe and processing method can produce parts with low shrinkage, high strength, and favorable thermal properties. Parts have been produced with less than about 6% shrinkage in multiple directions of measurement.

A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler; providing a processing plasticizer; adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.

Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component present therein. Printed parts having piezoelectric properties may be formed using compositions comprising a plurality of piezoelectric particles and a polymer material comprising at least one thermoplastic polymer and at least one photocurable polymer precursor. The at least one photocurable polymer precursor may undergo a reaction in the presence of electromagnetic radiation, optionally undergoing a reaction with the piezoelectric particles, in the course of forming the printed part. The piezoelectric particles may be mixed with the polymer material and remain substantially non-agglomerated when combined with the polymer material. The compositions may define a form factor such as a composite filament, a composite pellet, or an extrudable composite paste, which may be utilized in forming printed parts by extrusion and layer-by-layer deposition, followed by curing.