Dsm IP Assets B.v.

Avecia Bv

Avecia Limited

Pablo Steenwinkel

Gerardus Cornelis Overbeek

Ronald Tennebroek

Emilio Martin

Jurgen Scheerder

John Christopher Padget

Tijs Nabuurs

Alfred Jean Paul Buckmann

Johannes Ludovicus Martinus Van Hilst

Tom Annable

Paulus Johannes Maria Hönen

Petrus Johannes Maria Van Oorschot

Andreas Jacobus Josine Goos

An aqueous polyurethane composition comprising a polyurethane which is the reaction product of: (A) an isocyanate-terminated prepolymer and (B) at least one active-hydrogen chain-extending compound comprising at least 0.20 stoichiometric equivalents with respect to the isocyanate content of the isocyanate-terminated prepolymer (A), of an active-hydrogen chain-extending compound selected from the group consisting of hydrazine, hydrazine derivatives and mixtures thereof; and wherein at least 0.2 stoichiometric equivalents of the anionic or potentially anionic water-dispersing groups are neutralised with ammonia.

Aqueous polyurethane compositions

An aqueous coating composition comprising a crosslinkable water-dispersible polyurethane oligomer wherein said composition when drying to form a coating has an open time of at least 20 minutes, a wet-edge time of at least 10 minutes, a tack free time of &#x3c;20 hours and an equilibrium viscosity of &#x3c;5,000 Pa&#xb7;s at a solids content when drying in the range of from 20 to 55 wt % using a shear rate in the range of from 9&#xb1;0.5 to 90&#xb1;5 sand at 23+2&#xb0; C.

Aqueous polyurethane coating compositions

An aqueous coating composition comprising a crosslinkable water-dispersible oligomer(s), a dispersed polymer(s) and optionally a non-crosslinkable water-dispersible oligomer wherein the crosslinkable oligomer(s) and non-crosslinkable oligomer(s) comply with Equation 1 as follows: 

Polymeric aqueous coating compositions

An aqueous coating composition containing a non-crosslinkable water-dispersible oligomer(s); a dispersed polymer(s); water and optionally co-solvent wherein the composition has an open time of at least 20 minutes; a wet edge time of at least 10 minutes; a tack free time of &#x2266;24 hours and an equilibrium viscosity of 5,000 Pa&#xb7;s.

Aqueous coating composition comprising non-crosslinkable oligomer(s) and dispersed polymer(s)

An aqueous coating composition comprising a crosslinkable water-dispersible hyperbranched macromolecule(s) wherein the composition when drying has an open time of at least 20 minutes, a wet edge time of at least 10 minutes, a tack free time &#x2266;15 hours, a dust free time &#x2266;5 hours and an equilibrium viscosity of &#x2266;5,000 Pa&#xb7;s at any solids content when drying in the range of from 20 to 55% by weight using any shear rate in the range of from 9&#xb1;0.5 to 90&#xb1;5 sand at 23&#xb1;2&#xb0; C.

Aqueous hyperbranched macromolecule coating compositions

An aqueous coating composition comprising a crosslinkable water-dispersible polyester oligomer wherein said composition when drying to form a coating has the following properties: an open time of at least 20 minutes, a wet edge time of at least 10 minutes, a thumb hard time of &#x2266;48 hours and a tack-free time &#x2266;20 hours and an equilibrium viscosity of &#x2266;5000 Pa.s at any solids content when drying in the range of from 20 to 55 wt % using a shear rate in the range of from 9&#xb1;0.5 to 90&#xb1;5 sand at 23&#xb1;2&#xb0; C.

Aqueous polyester coating compositions

An aqueous dispersion comprising an alkyd, vinyl polymer I, vinyl polymer II and a liquid medium where vinyl polymer I is preformed prior to incorporation into the aqueous dispersion and where vinyl polymer II is prepared in the presence of the alkyd and the vinyl polymer I.

Aqueous alkyd and vinyl polymer dispersions

Aqueous polymer composition suitable for coating which comprises the following components dispersed in water: (1) a combination of an acrylic polymer(s) A and an acrylic polymer(s) B where polymer(s) A has a Tg of not more than 30&deg; C. and polymer(s) B has a Tg of at least 35&deg; C., more preferably at least 45&deg; C., which is at least 25&deg; C. higher than the Tg of polymer(s) A, and wherein one or both of polymers A and B bear crosslinker functional groups capable of imparting ambient-temperature crosslinkability to component (1) in a coating formed from the composition via the formation of non-radically-formed covalent bonds; and (2) a self-dispersible, ionically stabilised polymer having olefinically unsaturated bond functionality capable of imparting radiation-curability (preferably uv-radiation curability) thereto in a coating formed from the composition.

Growing community of inventors

Waalwijk, Netherlands

Pablo Steenwinkel