Zeneca Limited

Imperial Chemical Industries Limited

The Lubrizol Corporation

Lubrizol Advanced Materials, Inc.

Merck Patent Gmbh

Avecia Limited

Francolor Pigments Sa

Zeneca Limted

John D Schofield

Dean Thetford

Patrick J Sunderland

Frederick Campbell

Peter Kingsley Davies

Stuart N Richards

Alan S Baker

John Michael McCarthy

Stephen G Yeates

Stephen William Leeming

Elliot Coulbeck

Beverley Anne Brown

Janos Veres

Arne Vinther

Gerard Coispeau

David John Cartridge

Shelly A Barnhart

Peter E Bloyce

Paul Gough

Roger Slater

John M Geary

Roger Norman Rothon

Eric L Rohr

Domenico Carlo Cupertino

Jatin S Panchal

Jatin Panchal

Shelly A Barnhart-Clark

A composition comprising particulate solid, an organic medium and a dispersant comprising a polyacrylic copolymer functionalized with a polyether and reacted with an aminic polybasic species.

Multi-acid multi-base graft copolymer dispersants

The invention relates to a composition containing a particulate solid, plastic material (such as polyvinyl chloride), and a dispersant/agent comprising an oligomer from polymerizing a Chydroxycarboxylic acid optionally with a Chydroxycarboxylic acid or its corresponding lactone form.

Filled poly vinyl chloride composition

The invention relates to a composition containing a particulate solid, an organic medium, and a (meth)acrylic polymer. The invention further relates to novel compounds, and the use of the (meth)acrylic polymer as a dispersant, typically a pigment dispersant.

Dispersant composition

A dispersant of general Formula IT&#x2014;(A)(B)&#x2014;Z&#x2003;&#x2003;(1)wherein

Dispersants

A composition comprising a plastics material, an inorganic particulate solid such as aluminium trihydrate and a coupling modified of formulaA-(X&#x2014;Y&#x2014;CO)(O&#x2014;B&#x2014;CO)OHwherein A is a moiety containing a terminating ethylenic group with one or two adjacent carbonyl groups; X is a direct bond, O or N; Y is C-alkylene or C-alkenylene; B is C-alkylene; m is from 1 to 4 and n is from 0 to 5 provided that when A contains two carbonyl groups adjacent to the ethylenic group then X is N. Specific examples of coupling modifiers are &#x3b2;-carboxyl ethylacrylate and 5-carboxy pentyl maleimide.

Filler composites

Dispersions useful in making capacitors, printed circuit boards, etc., comprising an electronic particulate solid, a carrier and a dispersant of formula (1): R&#x2014;(O-A-CO)x(O&#x2014;B&#x2014;CO)y-Z wherein R is hydrogen or a polymerisation terminating group; A is C8-20-alkylene and/or C8-20-alkenylene; B is C1-6-alkylene or a lactone thereof; Z is hydroxyl or a basic group or a moiety containing a basic group; x is from 2 to 45; Y is from 0 to 15; and the ration of x:y is not less than 3:1, the carrier is a high boiling organic liquid having a boiling point between 150 and 350&#xb0; C. selected from monohydric alcohols and esters of dialkylene glycol monoalkyl esters.

Use of dispersions in making electronic devices

A field effect transistor in which a continuous semiconductor layer comprises:

Field effect transistors and materials and methods for their manufacture

A paint comprising a film-forming resin, an organic liquid, a pigment and a dispersant of formula 1, including salts thereof(T-(O-A-CO)(O-B-CO)Zwherein T is H or a polymerisation terminating group; A is C-alkenylene; B is C-alkylene; Z is the residue of a polyamine or polyimine; n is 2 to 50; m is 0 to 25; and p is not less than 2. Preferred dispersants are derived from poly(ricinoleic acid) and polyethylene imine.

Paint compositions

The use of an amine functional polymer, including salts thereof, as a rheology modifier for solvent-based paints, inks, filled thermosetting resins and thermosetting resin-based gelcoats whereby the amine functional polymer contains not less that 42% by weight of the residue of one or more amine-containing monomers, or salts thereof, relative to the weight of the polymer. Preferably the amine functional polymer is obtainable from two or more monomers which contain at least one ethylenically unsaturated group such as styrene and 2-dimethylaminoethylmethacrylate.

Thickeners

A composition of copper phthalocyanines containing, on average, from 0.1 to 3 methyl groups per phthalocyanine nucleus. The composition is suitable for the coloration of paints and plastics materials.

Pigment composition

A dispersant for aqueous mill-bases obtainable by reacting a polyethylene glycol with a molar excess of a hydroxycarboxylic acid containing from 4 to 17 carbon atoms or lactone thereof and/or with a C,-alkylene oxide to form a polymeric diol and phosphating the diol. The preferred hydroxycarboxylic acid or lactone is &egr;-caprolactone.

Polyether phosphates

Rheology modifier for solvent-based coatings

Dispersant for dispersing particulate solids

Growing community of inventors

Bury, United Kingdom

John D Schofield