Avecia Bv

Zeneca Resins Bv

Dsm IP Assets B.v.

Zeneca Limited

Aquasol Limited

Yvonne Wilhelmina Smak

Gerardus Cornelis Overbeek

John Christopher Padget

Ronald Tennebroek

Alfred Jean Buckmann

Tijs Nabuurs

Emilio Martin

Phillip Cheshire

David Charles Hinde

Terence Yeates

Johannes Hilst Van

There is described a low number average molecular weight (M&#x3c;10 kD) and high glass transition temperature (&#x3e;75&#xb0; C.) copolymer (optionally a solid grade oligomer (SGO)) that comprises (a) at least 20 wt-% of itaconate functional monomer(s), (b) not more than 40% of a hydrophilic monomer, preferably an acid functional monomer(s) in an amount sufficient to achieve an acid value from 65 to 325 mg KOH per g of solid polymer; (c) optionally not more than 70% of other monomers not being either (a) or (b), having a max content of vinyl aromatic monomer(s) of 40 wt-% and/or max content of methacrylate(s) of 40 wt-%; where the weight percentages of monomers (a), (b) and (c) are calculated as a proportion of the total amount of monomers in the copolymer being 100%.

Polymer, process and composition

Water-soluble films suitable for water-dissolvable packaging comprising a polyurethane polymer having defined amounts of poly(ethylene oxide) (and optionally poly(propylene oxide)) groups and acid (preferably carboxyl) groups at least 50% neutralised with a base, at least a proportion of which is of the non-volatile type, the polyurethane being made by chain extension of a urethane prepolymer. Also water-soluble packaging (sachets, capsules, bags) made from the films and their use in packaging various materials, and a process for the production of aqueous polyurethane solutions which may be used for making such films.

Water soluble films

An aqueous crosslinkable coating composition comprising i) an autoxidizably crosslinkable polymer, ii) a not autoxidizably crosslinkable vinyl polymer bearing carbonyl groups and iii) carbonyl-reactive groups to crosslink the vinyl polymer.

Crosslinkable coating compositions

An aqueous crosslinkable coating compositions comprising i) an autoxidisably crosslinkable polymer, ii) a not autoxidisably crosslinkable vinyl polymer bearing acetoacetyl groups and iii) acetoacetyl-reactive groups to crosslink the vinyl polymer.

Aqueous polymer dispersions

Production of aqueous polymer compositions

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Waalwijk, Netherlands

Yvonne Wilhelmina Smak