Dsm IP Assets B.v.

Covestro (Netherlands) B.v.

Avecia Bv

Covestro B.v.

Jurgen Scheerder

Gerardus Cornelis Overbeek

Ronald Tennebroek

Tijs Nabuurs

Emilio Martin

Pablo Steenwinkel

Alfred Jean Paul Buckmann

Rajasingham Satgurunathan

Hinrike Malda

John Christopher Padget

Tom Annable

Alfred Jean Paul Bückmann

Patrick Johannes Maria Stals

Daan Van Der Zwaag

Marnix Rooijmans

Roel Johannes Marinus Swaans

Paul Wyman

Maud Kastelijn

Adrianus Antonius Johannes Van Geel

Stella Josette Van Dijk

Johannes Ludovicus Martinus Van Hilst

Franciscus Adrianus Johannes Suykerbuyk

Thomas L M Frijns

Remy Paul Marie Dollekens

De Nik Bont

Mamix Rooijmans

Alfred Jean Paul BÜCKMANN

Rajasingham Satguranathan

Hubertus HGJ Frijns

Frijns Thomas LM LM

A process for preparing an aqueous polymer dispersion including free-radically initiated emulsion polymerization in an aqueous medium, in the presence of at least one vinyl polymer A, to obtain a polymer B including a vinyl polymer phase B1 with a glass transition temperature of from −20 to +15° C. and a vinyl polymer phase B2 with a glass transition temperature of from +50 to +110° C., with the proviso that the difference in glass transition temperature between polymer B1 and polymer B2 is at least 40° C. The weight ratio of polymer B1 to polymer B2 is from 80:10 to 10:20.

Process for preparing aqueous polymer dispersions

The current invention relates to an one-pack aqueous coating composition comprising dispersed carbonyl functional vinyl polymer(s) particles, characterized in that the coating composition further comprises carbodihydrazide, whereby (i) the equivalent molar ratio of hydrazide groups to carbonyl groups is from 0.1 to 0.95, (ii) the ratio of number-average molecular weight of the carbonyl functional vinyl polymer(s) to acid value of the carbonyl functional vinyl polymer(s) is higher than 400, and (iii) the acid value of the carbonyl functional vinyl polymer(s) is from 2 to 100 mg KOH/gram carbonyl functional vinyl polymer.

Aqueous crosslinkable coating composition

The present invention relates to an aqueous dispersion comprising dispersed particles of an acrylic copolymer having a volume average particle size diameter (d50) of from 1 to 50 &#x3bc;m (microns), wherein the aqueous dispersion further comprises (i) an acrylic copolymer dispersant having an alkaline solubility higher than 50 wt. %, and being present in the dispersion in an amount of from 10 to 35% by weight, relative to the total amount of monomers used to prepare the acrylic copolymer of the dispersed polymeric particles; and (ii) decomposition products of an oil-soluble organic initiator.

Aqueous dispersion and uses thereof

An aqueous polymer composition which when in the form of a film shows excellent elongation at break comprising (i) 5 to 30 wt. % of polyurethane where the acid value of the polyurethane is between 3 to 40 mg KOH/g; (ii) 70 to 95 wt. % of vinyl polymer comprising 20 to 90 wt. % of vinyl polymer with Tg&#x3c;20&#xb0; C.; 10 to 80 wt. % of vinyl polymer with Tg&#x2265;20&#xb0; C.; where at least one of the vinyl polymers contains acid functional groups with acid value in the range of from 15 and 240 mg KOH/g.

Aqueous composition with improved elongation at break

Disclosed is a method to provide a metal wire with a coating system comprising a primer and a topcoat, particularly a hydrophilic, lubricious topcoat. The method comprises applying directly onto the wire metal a primer coating composition, which is an aqueous coating composition comprising a multiphase vinyl polymer, the polymer comprising a first phase having a Tg in the range of from &#x2212;20&#xb0; C. to 40&#xb0; C. and a hard phase having a Tg in the range of from 25&#xb0; C. to 120&#xb0; C. The primer has good adhesion to both the metal surface and the topcoat, and provides the eventual coating system with, inter alia, a good flexibility.

Primer for coating coiled wires

A process is described for making an aqueous coating composition comprising a cationic vinyl oligomer comprising the following steps: I. preparation of a cationic vinyl oligomer by solution or bulk polymerization of components: i) 2 to 50 wt % of vinyl monomers bearing amine functional groups selected from the group consisting of non-ionic amine functional groups (a), permanent quaternary ammonium functional groups (b), neutralized amine functional groups (c) and mixtures thereof; and ii) 20 to 98 wt % of Ci to Ci8 alkyl (meth)acrylates; and II. dispersion of the cationic vinyl oligomer in an aqueous medium and neutralization of non-ionic amine functional groups.

Process for making a cationic vinyl oligomer composition

Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising: (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer which comprises as a polymerized constituent monomer thereof (i) a fluoromonomer(s) having the formula (1) wherein Ris CHor H, Ris a per-fluorinated Calkyl group and n is 1, 2, 3 or 4, (ii) a hydroxyl functional monomer(s) and (iii) a carboxylic acid-functional monomer(s) where the vinyl fluoropolymer has a glass transition temperature Tg within the range of from &#x2212;50 to 90&#xb0; C. and (B) at least one hydroxyl-reactive crosslinker material 

Aqueous crosslinkable coating compositions based on vinyl fluoropolymer

An aqueous coating composition comprising a crosslinkable water-dispersible vinyl oligomer(s) 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 &#x2266;20 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 wt % 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 vinyl polymer 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 composition comprising components: (A) 50 to 99 wt. % of a vinyl polymer(s) having a gradient polymeric morphology; and (B) 1 to 50 wt. % of at least one polymer not having a gradient polymeric morphology, wherein components (A) and (B) add up to 100%.

Polymer composition comprising a polymer having a gradient polymeric morphology

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 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.

Growing community of inventors

Holland, Netherlands

Jurgen Scheerder