Dsm IP Assets B.v.

Lanxess Deutschland Gmbh

Arlanxeo Netherlands B.v.

Martin Van Duin

Pieter Gijsman

Harold Jan Smelt

Philip James Hough

Victor Fidel Quiroga Norambuena

Maria Alvarez-Grima

Henri Jacob Hubert Beelen

Jacobus W M Noordermeer

Jacob Hubert Henri Beelen

Miriam A L Verbruggen

Leen Van Der Does

Christoph Gogelein

Gose Van Zandvoort

Jagdish Ramanlel Patel

Christopher Michael Twigg

Christoph GÖGELEIN

Maria Montserrat Alvarez-Grima

Philip Hough

A rubber composition, comprising i) an ethylene-&#x3b1;-olefin-non-conjugated-diene copolymer having&#x2014;a Mooney viscosity ML (1+8) at 150&#xb0; C.&#x2265;85 MU and&#x2014;an ethylene content &#x2264;63 wt. %&#x2014;the diene content is 4 to 8% by weight of the ethylene-a-olefin-non-conjugated-diene copolymer i), &#x2014;the non-conjugated diene is a combination of 5-ethylidene-2-norbornene (ENB) and 5-vinylnorbornene (VNB), &#x2014;the ethylene-&#x3b1;-olefin-non-conjugated-diene copolymer i) has an amount of VNB between 0.05 and 1 wt. %, and has a Mw of at least 400,000 g/mol and, ii) an extender oil of 10 to 40 phr based on the copolymer i) with the sum of the EPDM copolymer i) and the oil ii) amounting to at least 95 wt. % of the composition.

Rubber composition

The invention relates to a vulcanizable polymer composition comprising

Vulcanizable polymer composition

A vulcanizable rubber composition includes an oil extended copolymer composition, an unsaturated rubber, filler, process oil and a vulcanizing agent, wherein the oil extended copolymer composition ion has a phase angle &#x3b4;of lower than 2.5, and includes: auxiliary agents, extender oil, and at least one ethylene-&#x3b1;-olefin-non-conjugated-diene copolymer having a weight average molecular weight (Mw) of at least 300,000 g/mol, an intrinsic viscosity higher than 4 measured in Xylene at 70&#xb0; C., and a polydispersity (Mw/Mn) smaller than 3.

Vulcanizable rubber composition

Processes for producing an (ultra) high molecular weight polyethylene (HMWPE) article include incorporating into the HMWPE resin a Hindered Amine Light Stabilizer (HALS) and cross-linking the (U)HMWPE during or after molding the (U)HMWPE resin.

Process for producing high molecular weight polyethylene

Polymer composition containing a) a polymer, b) a zeolite, whereby the total amount of the components a) and b) in the composition is higher than 90 wt %, in particular higher than 94 wt %, more preferred higher than 98 wt % and the total amount of water determined by TGA in the temperature range of 25 to 380&#xb0; C. with a rate of 5&#xb0; C./min is lower than 15 wt %, based on the amount of residuals obtained after the TGA measurement has been continued to 550&#xb0; C.

Polymer composition

The invention relates to a process for producing an (ultra) high molecular weight polyethylene (HMWPE) article comprising: In particular the invention relates to a process comprising the following steps: 

The invention relates to a process for producing an (ultra) high molecular weight polyethylene (HMWPE) article comprising:&#x2014;incorporating into the HMWPE resin a Hindered Amine Light Stabilizer (HALS) and&#x2014;cross-link the (U)HMWPE during or after molding the (U)HMWPE resin. In particular the invention relates to a process comprising the following steps: a) incorporating into (U)HMWPE resin a Hindered Amine Light Stabilizer (HALS) according to one of the following general formulas or combinations hereof: wherein Rup to and including Rare herein independent substituents; for example containing hydrogen, ether, ester, amine, amide, alkyl, alkenyl, alkynyl, aralkyl, cycloalkyl and/or aryl groups, which substituents may in turn contain functional groups, for example alcohols, ketones, anhydrides, imines, siloxanes, ethers, carboxyl groups, aldehydes, esters, amides, imides, amines, nitriles, ethers, urethanes and any combination thereof; b) molding the (U)HMWPE resin comprising the HALS, resulting in an article; c) cross-linking and sterilizing the article via gamma radiation or electron beam radiation; d) optionally, if step b results in a stock shape, machining the stock shape into an article; wherein step c and step d can be performed in either order. 

The invention relates to a method for devulcanizing a sulphur-cured rubber, which rubber contains a network of a polymer, which polymer has a main chain of carbon atoms, in which for the vulcanization per 40 carbon-carbon bonds in the main chain a maximum of 1 unsaturated carbon-carbon bond occurs, by heating the rubber in the presence of a devulcanizing agent. The devulcanizing agent is an amine compound.

Growing community of inventors

Sittard, Netherlands

Martin Van Duin