Arxada Ag

Lonza Inc.

Gaetano La Delfa

Stefan Ellinger

Constanze Franzke

Ulrich Mayerhoeffer

Roger Mazotti

Martina Furrer

Constanze Müller

Cornelia Zur Täschler

Stefano Licari

Marcel Sommer

Sandro Landonio

Magnus Abgottspon

Viktor Dick

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

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

Growing community of inventors

Naters, Switzerland

Gaetano La Delfa