University of Florida Research Foundation Inc

Lonza Inc.

Arxada Ag

Lonza Solutions Ag

Stefan Ellinger

Christoph Taeschler

Matthias Beller

Helfried Neumann

Florencio Zaragoza Doerwald

Pierre Marc Beaujuge

John Robert Reynolds

Florian Fischer

Gaetano La Delfa

Shaoke Zhang

Lin He

Kishore Natte

Roger Mazotti

Chad Martin Amb

Nikolaus H Bieler

Constanze Franzke

Ulrich Mayerhoeffer

Axel Schulz

Leo Schmid

Thomas Belser

Fei Ye

Stefano Licari

Marcel Sommer

Sandro Landonio

Magnus Abgottspon

Viktor Dick

John J Reynolds

Nicolas Rotta-Loria

Cornelia Zur Täschler

Constanze Müller

Viktor Ladnak

Martina Furrer

Cornelia Zur Taeschler

Jorg Harloff

Katharina Sievert

Jean Fournier

The present invention relates to novel compositions comprising cyanate ester resins and substituted bisimides (citraconimides, bisitaconimide, citraconimido-itaconimide, bisnadicimide, bistetrahydroimide and mixtures thereof) as defined in claim, and thermoset composite materials based on these compositions.

Compositions with improved characteristics

A bulk moulding compound comprising one or more cyanate ester, a catalyst, a filler and reinforcement fibres is provide, whereby the one or more cyanate ester is independently selected from a difunctional cyanate ester compound and/or a polyfunctional cyanate ester and mixtures of these cyanate esters. Furthermore, the catalyst is independently selected from the group consisting of 4,4' methylene-bis(2,6-diethylaniline) (M-DEA), 4,4&#x2032;-methylene-bis(3-chloro-2,6-diethyl&#xac;aniline) (M-CDEA), aluminum(III)acetylacetonate, and mixtures thereof.

Method for preparation of a moulded composite from a bulk moulding compound

The invention discloses a method for fluoroalkylation of enamines with a fluoro alkyl halide in the presence of a base.

Method for fluoroalkylation of enamines

The invention discloses a method for the preparation of fluoro alkylated compounds by homogeneous Ni catalyzed fluoro alkylation with fluoro alkyl halides in the presence of a base.

Method for preparation of fluoro alkylated compounds by homogeneous Ni catalysis

The invention discloses a method for the preparation of fluoro alkylated 1,4-dioxene by homogeneous Ni catalyzed fluoro alkylation with fluoro alkyl halides of 1,4-dioxane in the presence of a base.

Method for preparation of fluoro alkylated 1,4-dioxene by homogeneous Ni catalysis

The invention discloses a method for preparation of alkylated, fluoro alkylated, chloro alkylated and fluorochloro alkylated compounds by a heterogeneous Co-catalysed alkylation or fluoro, chloro and fluorochloro alkylation with alkyl halides, fluoro alkyl halides, chloro alkyl halides or fluorochloro alkyl halides respectively.

Method for preparation of alkylated or fluoro, chloro and fluorochloro alkylated compounds by heterogeneous cobalt catalysis

The invention discloses a method for preparations of fluoro, chloro and fluorochloro alkylated compounds by homogeneous Pd catalyzed fluoro, chloro and fluorochloro alkylation with fluoro, chloro and fluorochloroalkyl halides in the presence of di(1-adamantyl)-adamantyl-n-butylphosphine and in the presence of 2,2,6,6-tetramethylpiperdine 1-oxyl.

Method for preparation of fluoro, chloro and fluorochloro alkylated compounds by homogeneous catalysis

The invention discloses a method for preparation of alkylated or fluoro, chloro and fluorochloro alkylated compounds by a heterogeneous Pt/C-catalyzed alkylation or fluoro, chloro and fluorochloro alkylation with alkyl halides or with fluoro, chloro and fluorochloro alkyl halides in the presence of CsCOor CsHCO.

Method for preparation of alkylated or fluoro, chloro and fluorochloro alkylated compounds by heterogeneous catalysis

The invention discloses a method for preparation of cyano compounds of the 13th group of the periodic table with 1, 2, 3 or 4 cyano residues, represented by formula (I): [Cat][ZF(CN))]by a reaction of [(ZF)] with trimethylsilylcyanide in the presence of a Lewis acid and in the presence of the cation Cat; Catis a cation, Zis B, Al, Ga, In or Tl, m is 1, 2, 3 or 4 and n is 1, 2, 3 or 4.

Method for preparation of cyano compounds of the 13th group with a lewis acid

Disclosed are halogenated diethyltoluenediamines of formula wherein either Ris an amino group and Ris chlorine or bromine, or Ris an amino group and Ris chlorine or bromine, and isomeric mixtures thereof. The halogenated diethyltoluenediamines of formula I are useful as chain extenders for polyurethanes and hardeners for epoxy resins having a relatively long gel time.

Halogenated diethyltoluenediamines

A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%.

Process for the selective meta-chlorination of alkylanilines

Green to transmissive soluble electrochromic polymers are conjugated polymers having a plurality of repeating units where repeating units are a plurality of substituted dioxyheterocycle based donor groups coupled to an acceptor group. The conjugated polymer absorbs radiation within a first band of the visible spectrum and a second band of the visible spectrum when in a neutral state resulting in a green color and is transmissive when in an oxidized state. The polymers are soluble allowing processing of films and coatings from solution.

Green to transmissive soluble electrochromic polymers

A soluble donor-acceptor electrochromic polymer (DA-ECP) is prepared that absorbs light throughout at least the majority of the visible range and is essentially black to the human eye when in the neutral state, but is highly transmissive when electrochemically doped. The conjugated polymer has acceptor units separated by sequences of a plurality of donor units. The sequences can be monodispersed or polydispersed. The DA-ECP is prepared by the polycondensation of a plurality of at least one donor-acceptor oligomer (DA-oligomer) that has at least one internal acceptor repeating unit and at least one donor repeating unit on all termini of the oligomer, and optionally, a plurality of at least one donor monomer and/or donor oligomer.

Black soluble conjugated polymers with highly transmissive oxidized state

A soluble fused donor-acceptor conjugated polymer (fDA-CP) is prepared that absorbs light throughout nearly all the visible spectrum and is essentially black to the human eye when in the neutral state. The conjugated polymer has acceptor units that are isolated by a plurality of fused donor units. The fDA-CP assumes a conformation that results in a close &#x3c0;-stacking between adjacent lamella with a separation of less than 4.5 &#x212b; in the solid state and extended conjugation to promote high charge carrier mobilities. The fDA-CP is prepared by the polycondensation of a plurality of at least one fused donor-acceptor oligomer (fDA-oligomer) that has a flat internal acceptor unit and at least one fused donor unit incorporated in the oligomers, and optionally, an additional conjugated aromatic monomer or oligomer copolymerized with the fDA-oligomers.

Growing community of inventors

Visp, Switzerland

Stefan Ellinger