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Vol. 18, No. 6, Page 12 Banbury compounds were extruded at a relatively low temperature using a lace die. Observed output rates could be related to plasticizer concentration and changes in morphology. Extrudates could be glossy or matt, and showed varying levels of bulk distor- tion. Bulk distortion increased with Banbury processing tempera- ture and plasticizer activity. Surface mattness tended to disappear at high plasticizer concentrations, high Banbury processing temperatures, and when more active plasticizers were used. Plast. & Rubb. Proc. & Appl., 1987, 8, (bf, 215-226 COMPANY NEWS COLOUD HEfHJREMENT A new spectrophotometer from Pacific Scientific Ltd. (U.K.) gives very rapid measurement of the spectral response of specimens. A silicon photodiode array scans the entire spectrum simultan- eously, and displays data almost instantaneously. DATA SHEETS ON J. Allcock & Sons of Manchester (U.K.) has issued individual data PIGMENTS, BLOWING sheets on its range of a) synthetic iron oxide, green chromium AGENTS AND FILLERS oxide and yellow oxide pigments; b) blowing agents based on zinc amine/C02, and sodium bicarbonate, and c) fillers based on Norwe- gian talc, limestone flour, magnesium silicate, barytes, calcium carbonates, and wood flour. ACQUISITION The Austrian-based Gabriel-Chemie, with interests in colours, inks and plastics additives, has acquired Davan Plastics in the U.K.,a dry colour and compounding company with masterbatch exper- ience. The aim for the Austrian company was to turn its attention to western Europe, to build on export activity that was tradition- ally directed to the Eastern Bloc and Middle East markets. Davan is Gabriel's second manufacturing base in Europe and with investment from Austria in plant over the last two years it has built up its masterbatch capabilities, firstly in the area of 'universal' masterbatches and now in more specialised, polymer- specific masterbatches. ICI ADDITIVES TEGHNICAL SWVICE ICI Speciality Chemicals has installed injection moulding machin- ery at its European technical centre to broaden R. & D. capabil- ity and enhance technical service. The new Arburg 305 EC0 injec- tion moulding machine means polymer additives are now evaluated under industrial conditions. Previously, customers either provi- ded ICI with test plates or sent polymers containing additives Cont./...... ADolTIVEs FOR o, 1988 Elsevier Science Publishers B.V., Amsterdam.188kW.99 f 2.20 #)LWERS No part of this publication may be reproduced, stored in a retrieval system, or transmitted by any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publishers (Readers in the U.S.A. - please see special regulations listed on back cover.)

Colour measurement

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Page 1: Colour measurement

Vol. 18, No. 6, Page 12

Banbury compounds were extruded at a relatively low temperature using a lace die. Observed output rates could be related to plasticizer concentration and changes in morphology. Extrudates could be glossy or matt, and showed varying levels of bulk distor- tion. Bulk distortion increased with Banbury processing tempera- ture and plasticizer activity. Surface mattness tended to disappear at high plasticizer concentrations, high Banbury processing temperatures, and when more active plasticizers were used.

Plast. & Rubb. Proc. & Appl., 1987, 8, (bf, 215-226

COMPANY NEWS

COLOUD HEfHJREMENT A new spectrophotometer from Pacific Scientific Ltd. (U.K.) gives very rapid measurement of the spectral response of specimens. A silicon photodiode array scans the entire spectrum simultan- eously, and displays data almost instantaneously.

DATA SHEETS ON J. Allcock & Sons of Manchester (U.K.) has issued individual data PIGMENTS, BLOWING sheets on its range of a) synthetic iron oxide, green chromium AGENTS AND FILLERS oxide and yellow oxide pigments; b) blowing agents based on zinc

amine/C02, and sodium bicarbonate, and c) fillers based on Norwe- gian talc, limestone flour, magnesium silicate, barytes, calcium carbonates, and wood flour.

ACQUISITION The Austrian-based Gabriel-Chemie, with interests in colours, inks and plastics additives, has acquired Davan Plastics in the U.K.,a dry colour and compounding company with masterbatch exper- ience. The aim for the Austrian company was to turn its attention to western Europe, to build on export activity that was tradition- ally directed to the Eastern Bloc and Middle East markets.

Davan is Gabriel's second manufacturing base in Europe and with investment from Austria in plant over the last two years it has built up its masterbatch capabilities, firstly in the area of 'universal' masterbatches and now in more specialised, polymer- specific masterbatches.

ICI ADDITIVES TEGHNICAL SWVICE

ICI Speciality Chemicals has installed injection moulding machin- ery at its European technical centre to broaden R. & D. capabil- ity and enhance technical service. The new Arburg 305 EC0 injec- tion moulding machine means polymer additives are now evaluated under industrial conditions. Previously, customers either provi- ded ICI with test plates or sent polymers containing additives

Cont./......

ADolTIVEs FOR o, 1988 Elsevier Science Publishers B.V., Amsterdam.188kW.99 f 2.20

#)LWERS No part of this publication may be reproduced, stored in a retrieval system, or transmitted by any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publishers (Readers in the U.S.A. - please see special regulations listed on back cover.)