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  Technology Patent countries
US 5364891  Polymers production having desired functional groups, especially for use in coating compositions by reacting polymer precursor having specific nitrogen containing groups with compounds containing the desired group and enolic carbonyl group.USE/ADVANTAGE - The polymers are particularly useful as components of for example protective or adhesive coating compositions for application to a variety of surfaces. Such compositions may produce coatings with improved film hardness, solvent and corrosion resistance, or decreased water permeability. USA
EP 0539031
US 5324762
Acrylic polymer plastisol composition for e.g. coil coating comprises single stage copolymer of methyl methacrylate isobutyl methacrylate and optionally other monomers.In an acrylic polymer plastisol composition the polymer is a single-stage copolymer of (a) methyl methacrylate, (b) isobutyl methacrylate and (c) optionally other monomers; the levels of monomers used in the polymerisation, w.r.t. total wt. of monomers, are: (a) 20-70 wt.%, (b) 30-80% and (c) 0-48%. USE/ADVANTAGE - The composition. is used to give abrasion- andcorrosion-inhibiting coatings for steel substrates, for coil coatings, for sealing gaskets for caps and closures of containers, or for interior coatings on metal containers (claimed). The sealing gaskets are particularly used in food applications. Use of isobutyl methacrylate gives a copolymer with excellent compatibility with less expensive plasticisers, e.g. dioctyl or diisodecyl phthalate or adipate, or diisononyl phthalate, without rendering the polymer soft or conferring poor mechanical properties. DE, ES, FR, GB, IT, NL, SE, USA, JP
EP 0951507
US 6495626
Acrylic plastisol for coating steel - contains two polymers and aplasticiser where one polymer is compatible, and the other polymer is incompatible, with the plasticiser, and the particle size of compatible polymer is controlled.Plastisol composition comprising:(A) an organic plasticiser component , (B) an acrylic polymer powder of weight average primary particle size = at least 0.4 mu m which is compatible with plasticiser and has been derived from an aqueous acrylic polymer dispersion(s), where the acrylic polymer component has a Tg at least 65°C, and (C) a polymer powder component which is incompatible with the organic plasticiser component. Also claimed is a process for the preparation of plastisol, the use of plastisol and a plasticised product made from plastisol USE - Abrasion and corrosion inhibiting coatings for steel substrates, coil coatings, flooring wear layers, sealing gaskets for caps and closures of containers and for screen printing of textiles, for wallpaper coatings, for modelling clays, or for the provision of interior coatings of metal containers. ADVANTAGE - The coatings do not yellow or degrade at high temperatures to produce corrosive HCl, as is the case with PVC plastisols. DE, ES, FR, GB, IT, NL, SE, NO, AU, USA

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These abstracts were compiled from information supplied by Derwent Ltd.

Last updated June 2005

 

 


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