Abstract: The invention relates to a process for the manufacture of a ballistic-resistant molded article in which a stack of monolayers is formed, each monolayer containing unidirectionally oriented reinforcing fibers and at most 30 mass % of a plastic matrix material, the reinforcing fibers being highly-drawn polyethylene fibers, and with the fiber direction in each monolayer being rotated with respect to the fiber direction in an adjacent monolayer, the stack then being compressed at a pressure of more than 25 MPa and a temperature between 125 and 150° C., and the plastic matrix material having a 100% modulus of at least 3 MPa.
Type:
Application
Filed:
March 7, 2007
Publication date:
July 19, 2007
Applicant:
DSM
Inventors:
Martinus Johannes Jacobs, Jean Hubert Beugels, Marc Blaauw
Abstract: Process for the continuous preparation of an alkyl 5-formylvalerate by reacting an alkyl-3-pentenoate with carbon monoxide and hydrogen by hydroformylation using a catalyst system comprising rhodium or iridium and a multidentate organic phosphite ligand according to the general formula:
in which n is 2-6, X is an n-valent organic bridging group, and in which the end groups R1-R2 are monovalent aryl groups, wherein the process is carried out in the presence of an acid compound having a pKa between 1 and 12 measured in water at 18° C.
Abstract: A curable liquid resin composition comprising a urethane (meth)acrylate polymer obtained by reacting:(A) a polyol compound containing as structural units groups which are represented by formulae--CH.sub.2 CH.sub.2 O-- or--CH.sub.2 CH(CH.sub.2 CH.sub.3)O--;(B) a polyisocyanate compound; and(C) at least one (meth)acrylate compound containing a hydroxyl group and coated articles produced therefrom.