B29K2105/0064

Polyisoprene latex graphene composites and methods of making them

The present invention relates to a method of preparing reduced graphene oxide, incorporation of the reduced graphene oxide into polyisoprene latex to provide a polyisoprene latex graphene composite and elastomeric articles prepared using the polyisoprene latex-graphene composite. In particular, the reduction of graphene oxide is accomplished without the use of strong reducing agents and organic solvents and incorporation of the reduced graphene oxide into polyisoprene latex is accomplished using room temperature latex mixing method or hot maturation. The resultant composite exhibits good colloid stability and polyisoprene latex films produced from the composite exhibit good mechanical properties with improved ageing resistance.

LATEX COMPOSITION FOR DIP-FORMING, METHOD FOR PREPARING THEREOF AND DIP-FORMED ARTICLE PREPARED THEREFROM

An embodiment of the present specification provides a latex composition for dip-forming, comprising a copolymer latex obtained by polymerizing a monomer mixture of a conjugated diene-based monomer, an ethylenically unsaturated nitrile monomer and an ethylenically unsaturated acid monomer; and a polyester polyol, and a dip-formed article prepared therefrom.

THERAPY CUSHION, APPARATUS AND METHOD FOR
20220273119 · 2022-09-01 ·

Therapy cushion, comprising a cushion body, comprising a body part rest surface adapted to receive a human body part to be placed thereupon and comprising a first outlet opening therein and a first cavity being formed within the cushion body, wherein the first cavity is connected with the first outlet opening via a first outlet channel and wherein the first outlet opening is adapted such that a therapy compound stored in the first cavity can exit therethrough from the first cavity.

Guayule latex extrusion

A latex processing system and method involves mixing a latex and at least one solvent blend in an extruder, in order to remove resin found in the latex and to coagulate the latex to form a coagulum. The at least one solvent blend has a first solvent configured to coagulate the latex, and a second solvent configured to swell the resulting coagulum. In particular, a series of the solvent blends may be used at different locations along a length of the extruder, and may further include distinct blends of the first solvent and the second solvent, introduced at the different locations, and having different ratios of the first solvent and the second solvent.

3D-PRINTING METHODS AND SYSTEMS

The present invention belongs to the field of three-dimensional printing methods. It relates to a method for printing a three-dimensional article, to a system thereof, to the use thereof and to a three-dimensional printed article manufactured therewith. The present invention relies on the use of a liquid resin comprising cyanoacrylate-based monomers and on the use of acidic inhibitors.

CHLOROPRENE COPOLYMER LATEX COMPOSITION AND MOLDED ARTICLE OF SAME
20220242987 · 2022-08-04 · ·

The present invention relates to a chloroprene copolymer latex composition, a molded article of chloroprene copolymer rubber, or a dip-molded product, and the chloroprene copolymer latex composition includes a chloroprene copolymer (A) and a vulcanization accelerator (B). The chloroprene copolymer (A) includes monomer units derived from chloroprene and from 2-methyl-1,3-butadiene. The chloroprene copolymer latex composition includes a carbamate-based vulcanization accelerator and a thiazole-based vulcanization accelerator as the vulcanization accelerator (B). The chloroprene copolymer latex composition enables production of a molded article having high flexibility and high tensile strength without use of a vulcanization accelerator that is feared to have skin sensitization.

Carboxylic Acid Modified-Nitrile Based Copolymer Latex
20220251346 · 2022-08-11 · ·

A carboxylic acid-modified nitrile-based copolymer latex includes a carboxylic acid-modified nitrile-based copolymer including: 65.5 wt % to 82.5 wt % of a conjugated diene-based monomer-derived unit, 15 wt % to 30 wt % of an ethylenic unsaturated nitrile-based monomer-derived unit, and 2.5 wt % to 4.5 wt % of an ethylenic unsaturated acid monomer-derived unit, wherein the carboxylic acid-modified nitrile-based copolymer latex satisfies General Formula 1:


1.0 mm.sup.2/s≤CV.sub.0≤3.0 mm.sup.2/s  [General Formula 1]

wherein CV.sub.0 represents a capillary viscosity of the carboxylic acid-modified nitrile-based copolymer latex which is measured in a swollen state in a methyl ethyl ketone solvent.

FORMULATIONS AND PRODUCTS TO REPLACE SINGLE-USE PLASTICS AND POLYSTYRENE WITH BIO-BENIGN MATERIALS SUCH AS AGRICULTURAL WASTES
20220213323 · 2022-07-07 ·

The present invention provides methods for preparing the nut waste sheet composites from a nut waste component and one or more binders.

Formulations and products to replace single-use plastics and polystyrene with bio-benign materials such as agricultural wastes
11434373 · 2022-09-06 · ·

The present invention provides methods for preparing the nut waste sheet composites from a nut waste component and one or more binders.

POLYISOPRENE LATEX GRAPHENE COMPOSITES AND METHODS OF MAKING THEM

The present invention relates to a method of preparing reduced graphene oxide, incorporation of the reduced graphene oxide into polyisoprene latex to provide a polyisoprene latex graphene composite and elastomeric articles prepared using the polyisoprene latex-graphene composite. In particular, the reduction of graphene oxide is accomplished without the use of strong reducing agents and organic solvents and incorporation of the reduced graphene oxide into polyisoprene latex is accomplished using room temperature latex mixing method or hot maturation. The resultant composite exhibits good colloid stability and polyisoprene latex films produced from the composite exhibit good mechanical properties with improved ageing resistance.