Huels Aktiengesellschaft

Degussa Aktiengesellschaft

Adolf Kuhnle

Helmut Kehr

Matthias Schleinzer

Mark Duda

Uwe Tanger

Rainer Elm

Heinrich Leppek

Isabella W C E Arends

Roger Arthur Sheldon

Sasidharan Manickam

Fritz Berke

Hans-Dieter Speikamp

Jurgen Bretschneider

Method for producing aromatic alcohols, especially phenol

A protective material, based on poly-.alpha.-olefins, capable of easy application in molten form, is distinguished by a balanced pattern of properties, good adhesion and good recycling capability. The present protective materials contain (I) not less than 50% by weight of one or more largely amorphous poly-.alpha.-olefins, composed of (a) 3 to 75% by weight of one or more .alpha.-olefins containing 4 to 10 carbon atoms, (b) 25 to 95% by weight of propene, and (c) 0 to 20% by weight of ethene; (II) not more than 30% by weight of other olefin homo- and copolymers which may be either largely amorphous or preferably partially crystalline; and (III) not more than 40% by weight of additives which are standard in the plastic sector. Such protective materials can be used in particular in the underfloor region of motor vehicles.

Protective material capable of application in molten form

A process for the production of largely amorphous polyalphaolefins with a narrow molecular weight distribution is provided where the products exhibit the following features:

Process for the production of largely amorphous polyalphaolefins with a

Expandable styrene polymer of controlled particle size is prepared by polymerizing styrene and optionally polymerizable comonomers in a stirred aqueous suspension in the presence of monomer-soluble free radical initiator and dispersant to the extent that at least 70%, based on the total monomer, of the monomers are polymerized in the aqueous suspension initially to a conversion of at least 70% by weight; and then adding the remaining monomer, initiator and optional copolymerizable monomer and additives to the polymerization medium over one to three hours.

Process for controlling the particle size in the preparation of

An ester of an acidic oxidized polyethylene wax and, for example, a polyhydric alcohol of a chain length of 2-5 carbon atoms, wherein the acid number of the oxidized polyethylene wax is, prior to esterification, 10-35 and the acid number of the wax ester is 8 or less, is useful as a lubricant for plastics processing, especially for rolling and calendering unplasticized PVC into sheeting.

Lubricant for processing of plastics

Growing community of inventors

Marl, Germany

Adolf Kuhnle