Styron Europe Gmbh

Dsm N.v.

Trinseo Europe Gmbh

Sven K H Thiele

Robbert Duchateau

Evemarie Hamann

Maurits F H Van Tol

Rutger A Van Santen

Hendrikus C L Abbenhuis

Jose Manu Rego

Michael Rössle

Daniel Heidenreich

Joachim Kiesekamp

Amaia Montoya-Goni

Dominique Thielemann

Christian Döring

Helgard Ebert

The present invention relates to a method for the preparation of a synthetic rubber blend, wherein the blend comprises a high molecular weight polydiene (A) and a low molecular weight polydiene (B). The present invention further relates to a synthetic rubber blend obtainable according to the method described herein; as well as to rubber compositions comprising the blend; and articles, such as tires.

In-situ polymer blend for a tire

The invention relates to polymers obtainable by using novel polymerization initiator compounds and optionally chain end modifying agents. The invention further relates to a method of making the initiator compounds and the corresponding polymers, including chain end-modified polymers. The invention, also relates to polymer compositions comprising the polymer of the invention, and further components such, as extender oils, fillers, etc., and to corresponding vulcanized polymer compositions and articles comprising vulcanized parts made from, the vulcanized polymer composition.

Polymerisation initiators

Metal complexes, catalyst compositions containing the metal complexes, and processes for making the metal complexes and the catalyst compositions are described for the manufacture of polymers from ethylenically unsaturated addition polymerizable monomers. The metal complexes have chemical structures corresponding to one of the following formulae: wherein Mand Mare metals; T is nitrogen or phosphorus; P is a carbon, nitrogen or phosphorus atom; groups R, Rand Rmay be linked to each other; Y is a divalent bridging group; X, X, and Xare anionic ligand groups with certain exceptions; D is a neutral Lewis base ligand; and s, o, k, i, ii, p, m, a, b, c, d, c, t, and y are numbers as further described in the claims.

Process for homo&#x2014;or copolymerization of conjugated olefins

A backbone modified polymer comprising the reaction product of an elastomeric polymer and a sulfide modifier represented by Formula 1: AS&#x2014;Y-Zm (Formula 1), and wherein Y is (C-C) aralkyl, (C-C) aryl, (C-C) alkyl, or (C-C) dialkylether (alkyl-O-alkyl), and wherein each may be optionally substituted with (C-Calkyl, (C-Calkoxy, (C-Caryl, (C-Caralkyl, nitrile, amine, NO, alkoxy, or thioalkyl; S is sulfur; A is hydrogen, &#x2014;(S)&#x2014;R1 or -MR2R3R4; Z is &#x2014;SH, &#x2014;S-MR5R6R7, &#x2014;S&#x2014;(S)&#x2014;R8, &#x2014;NR9R10, &#x2014;NR11COR12, &#x2014;O&#x2014;CO&#x2014;R13, &#x2014;NCO, or &#x2014;COOR14; M is silicon or tin; N is nitrogen; O is oxygen; m is the number one, two or three; p is the number one, two, three, four or five; R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are the same or different, and are each, independently, selected from hydrogen (H), (C-C) alkyl, (C-C) aryl, (C-C) aralkyl or (C-C) tri(hydrocarbyl)silyl, and wherein the hydrocarbyl groups are each independently selected from (C-C) alkyl, (C-C) aryl, or (C-C) aralkyl. The invention also provides related compositions, methods and articles.

Sulfide modified elastomeric polymers

The present invention is a rubber modified monovinylidene aromatic polymer composition where the rubber is a sulfanylsilane chain end modified elastomeric polymer. In the present invention the functionalized rubber provides sufficient grafting levels in standard graft polymerization process technologies to prepare desired rubber particle size distributions and morphologies. Across a range of rubber modified monovinylidene aromatic polymers, it has been found that the use of the modified elastomeric polymers according to the present invention can improve the combinations of resin properties, particularly clarity, surface and physical properties, including both rubber modified monovinylidene aromatic homopolymers (e.g., high impact polystyrene and copolymers (e.g., ABS). The functionalized rubbers have sulfanyl functional groups that provide an optimized reactive grafting site. This ensures that under graft polymerization conditions a monovinylidene aromatic polymer block is formed grafted to the butadiene polymer block. This is particularly desirable to enable the use of polybutadiene homopolymer rubbers which are more cost effectively used in rubber-modified monovinylidene aromatic polymers.

Monovinylidene aromatic polymers comprising sulfanylsilane functionalized elastomeric polymers

Metal complexes, catalyst compositions containing the metal complexes, and processes for making the metal complexes and the catalyst compositions are described for the manufacture of polymers from ethylenically unsaturated addition polymerizable monomers. The metal complexes have chemical structures corresponding to one of the following formulae: wherein Mand Mare metals; T is nitrogen or phosphorus; P is a carbon, nitrogen or phosphorus atom; groups R, Rand Rmay be linked to each other; Y is a divalent bridging group; X, X, and Xare anionic ligand groups with certain exceptions; D is a neutral Lewis base ligand; and s, o, k, i, ii, p, m, a, b, c, d, e, t, and y are numbers as further described in the claims.

Process for homo- or copolymerization of conjugated olefins

Metal complex containing one or more silsesquioxane ligands

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Halle, Germany

Sven K H Thiele