Patents Assigned to Avecia BV
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Patent number: 7049352Abstract: Pigmented aqueous coating composition providing good blocking and elasticity properties comprises a blend of a seeded multistage polymer latex(es) having at least one soft and at least one hard polymer phases and a non-film-forming polymer latex(es), the seed polymer(s) having a Tg?10° C. lower than that of the hard polymer phase(s) and preferably having a Tg?10° C. higher than that of the soft polymer phase(s), and the multistage polymer(s) preferably having amino functionality incorporated by an imination reaction.Type: GrantFiled: September 26, 2002Date of Patent: May 23, 2006Assignee: Avecia BVInventors: Alan Jack Gould, Jan Bouman, Rajasingham Satgurunathan
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Patent number: 7022759Abstract: 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 ?48 hours and a tack-free time ?20 hours and an equilibrium viscosity of ?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±0.5 to 90±5 s?1 and at 23±2° C.Type: GrantFiled: October 11, 2001Date of Patent: April 4, 2006Assignee: Avecia BVInventors: Emilio Martin, Gerardus Cornelis Overbeek, John Christopher Padget, Pablo Steenwinkel, Petrus Johannes Maria Van Oorschot, Ronald Tennebroek
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Publication number: 20050182180Abstract: An aqueous coating composition comprising 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 min; a wet edge time of at least 10 min; a tack free time of ?24 hrs and an equilibrium viscosity of 5,000 Pa·s.Type: ApplicationFiled: March 21, 2003Publication date: August 18, 2005Applicant: AVECIA BVInventors: Emilio Martin, Jurgen Scheerder, Gerardus Overbeek, Ronald Tennebroek, Tijs Nabuurs, Pablo Steenwinkel
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Patent number: 6759472Abstract: 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.Type: GrantFiled: February 28, 2003Date of Patent: July 6, 2004Assignee: Avecia BVInventors: Gerardus Cornelis Overbeek, Jurgen Scheerder, Pablo Steenwinkel, Ronald Tennebroek
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Patent number: 6610784Abstract: 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.Type: GrantFiled: August 27, 2001Date of Patent: August 26, 2003Assignee: Avecia BVInventors: Gerardus Cornelis Overbeek, Ronald Tennebroek, Yvonne Wilhelmina Smak
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Patent number: 6555625Abstract: 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.Type: GrantFiled: September 20, 2001Date of Patent: April 29, 2003Assignee: Avecia BVInventors: Gerardus Cornelis Overbeek, Ronald Tennebroek, Yvonne Wilhelmina Smak
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Patent number: 6362273Abstract: Aqueous polymer dispersion containing a water-dispersed polyurethane polymer and a vinyl (preferably acrylic) polymer in a weight ratio of from 30/70 to 5/95, wherein said polyurethane polymer is the reaction product of: A) an isocyanate-terminated polyurethane prepolymer having an acid value of ≧44 mg KOH/g of prepolymer (solids) and formed from reactants comprising an organic polyisocyanate component and an organic poly(isocyanate-reactive) group) component in which the isocyanate-reactive groups are selected from —OH and optionally one or more of —NH2, —NH—, and —SH (usually a polyol), wherein i) at least 70 weight % of said polyisocyanate component is constituted by at least one aliphatic polyisocyanate, ii) said poly(isocyanate-reactive group) component includes at least one acid-bearing poly(isocyanate-reactive group) compound for providing anionic groups which provide or contribute to water-dispersibility, iii) the reactants are used in amounts corresponding to a raType: GrantFiled: March 27, 2000Date of Patent: March 26, 2002Assignee: Avecia BVInventors: Emilio Martin, Gerardus Cornelis Overbeek, Yvonne Wilhelmina Smak