Concept

Solution polymerization

Publications associées (38)

Initiation Mechanisms of an Anionic Ring Opening Polymerisation for Lactam 12

A novel liquid system has been developed to initiate the anionic polymerization of lactam-12. This system, containing both an activator and a catalyst, has the primary advantage over previous systems of permitting infinite storage of the reactant, and it a ...

2002

Modeling of a Buss-Kneader as a polymerization reactor for acrylates. Part II: Methyl methacrylate based resins

Albert Renken

The Buss-Kneader has proven to be a suitable reactor for the polymerization of acrylates. In this second part, the polymerization of methyl methacrylate and the ter- polymerization of methyl methacrylate (MMA), hydroxyethyl methacrylate and n-butylmethacry ...

2002

Preparation of water-soluble polymers for flocculants with improved dewatering characteristics

Jutta Christine Wandrey, David Hunkeler

A process for prepg. a water sol. polymer comprises: providing a polymn. reaction mixt. comprising one or more polymerizable ethylenically unsatd. monomers; polymg. the ethylenically unsatd. monomers; and adding to the reaction mixt. during polymn. one or ...

(Ecole Polytechnique Federale De Lausanne (EPFL), Switz.).2002

Time-temperature-transformation diagram for reactive processing of polyamide 12

Pierre-Etienne Bourban

In order to describe the different events occurring during the anionic polymerization of polyamide 12 (PA12), a general concept of a time, temperature, and transformation (TTT) diagram was established and related to reactive processing conditions. Polymeri ...

2001

Stabilization of colloidal palladium particles by a block copolymer of polystyrene and a block containing amide sidegroups

Harm-Anton Klok

A block copolymer of polystyrene and poly(tert-butylmethacrylate) was prepared by anionic polymerization. The ester groups of the poly(tert-butylmethacrylate) were hydrolyzed, after which the remaining carboxyl groups were reacted with pyrrolidine. The res ...

1996

The kinetics of the soln. polymn. of Me methacrylate is characterized by a strong increase of viscosity of ?6 orders of magnitude and autoacceleration of the reaction rate due to the gel effect. This can lead to thermal and kinetic reactor instabilities. T ...

1992

Polymeric flocculant for removal of solids from aqueous suspensions or sludges such as sewage sludge

Jutta Christine Wandrey

The solids are removed from an aq. suspension contg. 0.01-200 g solids/L using a suspension of a water-sol., high-mol. wt., highly crosslinked copolymer of di-Me diallyl ammonium chloride and 0.1-3 mol.% of a crosslinked comonomer, mixed with acryloguanami ...

(Akademie der Wissenschaften der DDR, Germany).1991

Dewatering of sludges having a high solids content using a polymeric flocculant

Jutta Christine Wandrey

Sludges having a high solids content, e.g., from industrial wastewater or sewage treatment, are dewatered using a high-mol. poly(di-Me diallyl ammonium chloride) and a water-sol., high-mol., highly crosslinked copolymer of di-Me diallyl ammonium chloride a ...

(Akademie der Wissenschaften der DDR, Germany).1991

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