US 10,435,543 B2Granted

Rubber or elastomer compositions and processes for their manufacturing

AssigneeLeibniz-Institut Fuer Polymerforschung Dresden E.V.

InventorsTamil Selvan Natarajan, Amit Das, Klaus Werner Stoeckelhuber, Rene Jurk, Hai Le Hong, Sven Wiessner, Gert Heinrich

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Abstract

The present invention relates to rubber or elastomer compositions as can be used for vehicle tires, and to a method for the production of the rubber or elastomer compositions. The elastic modulus of the compositions can be adapted depending on the temperature and/or the application conditions, and is a cost-effective and easily implemented method for the production of the compositions. The rubber or elastomer compositions contain at least one rubber or elastomer matrix and at least 20 to 150 phr of a phase change material in solid or liquid form. The compositions may be made by mixing the at least one rubber and the at least 20 to 150 phr of a phase change material in solid or liquid form, or the at least one rubber is at least brought into contact with the phase change material, and further processing steps can be performed, and a vulcanization can be performed.

Claims26

Dependent claims

A rubber or elastomer composition comprising at least one rubber or elastomer matrix and at least 20 to 150 phr of a phase change material, wherein

the matrix is produced from at least one natural rubber and/or at least one synthetic rubber comprising styrene-butadiene rubber (SBR), butadiene rubber (BR), butyl rubber (IIR), acrylonitrile-butadiene rubber (NBR), carboxylated NBR, hydrogenated NBR, epichlorohydrin-ethylene oxide rubber (GECO), acrylic rubber (ACM), ethylene-propylene-diene rubber (EPDM), polyurethane rubber (PU), or fluorinated rubber (FKM),
the phase change material undergoes a phase change at the melting temperature of the phase change material,
the phase change material undergoes a phase change at a melting temperature which changes or adjusts the elastic modulus of the rubber or elastomer composition,
the phase change material comprising a material in solid form having a particle size of ≤1 μm, and
wherein one or more auxiliary materials comprising at least one reinforcing filler selected from the group consisting of carbon black, calcium carbonate, layered silicate, carbon nanotubes, hydrotalcite, graphene, and silica is present.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/600,110Filed 19 May 2017
Priority: DE 10 2016 209 09825 May 2016
Published: US 2017/0342240 A130 Nov 2017
Granted: 8 Oct 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

C08L 9/00
Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
B29C 35/02
Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor: heating or curing, e.g. crosslinking or vulcanizing during…
C08K 5/0025
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: crosslinking or vulcanising agents; including…
C08K 5/09
Oxygen-containing compounds: carboxylic acids; Metal salts thereof; Anhydrides thereof