Patents by Inventor Rajasingham Satgurunathan
Rajasingham Satgurunathan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10167408Abstract: 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<20° C.; 10 to 80 wt. % of vinyl polymer with Tg?20° 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.Type: GrantFiled: April 23, 2015Date of Patent: January 1, 2019Assignee: DSM IP ASSETS B.V.Inventors: Rajasingham Satgurunathan, Jurgen Scheerder, Gerardus Cornelis Overbeek, Roel Johannes Marinus Swaans, Ronald Tennebroek, Tijs Nabuurs, Maud Kastelijn, Hinrike Malda
-
Publication number: 20180118933Abstract: The present invention relates to an aqueous dispersion comprising (i) dispersed particles of vinyl polymer having a volume average particle size diameter (D50) of from 1 to 30 ?m (microns); (ii) a partially hydrolysed vinyl acetate (co)polymer in an amount of from 2% to 30% by weight, relative to the total amount of monomers used to prepare the vinyl polymer(s) of the dispersed polymeric particles; and (iii) decomposition products of an oil-soluble organic initiator; wherein at least 95 wt. % of the partially hydrolysed vinyl acetate (co)polymer that is present in the aqueous dispersion has a weight average molecular weight Mw from 25 to 500 kDalton and a hydrolysis degree of from 70 to 95 mol %.Type: ApplicationFiled: April 16, 2016Publication date: May 3, 2018Inventors: Adrianus Antonius Johannes VAN GEEL, Franciscus Adrianus Johannes SUYKERBUYK, Rajasingham SATGURUNATHAN, Gerardus Cornelis OVERBEEK, Johannes VAN HILST
-
Publication number: 20170044391Abstract: 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<20° C.; 10 to 80 wt. % of vinyl polymer with Tg?20° 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.Type: ApplicationFiled: April 23, 2015Publication date: February 16, 2017Inventors: Rajasingham SATGURUNATHAN, Jurgen SCHEERDER, Gerardus Cornelis OVERBEEK, Roel Johannes Marinus SWAANS, Ronald TENNEBROEK, Tijs NABUURS, Maud KASTELIJN, Hinrike MALDA
-
Patent number: 9074038Abstract: An aqueous coating composition, which when in the form of a film exhibits an MVTR of ?500 g/m2/24 h comprising 20 to 80 wt % of a polyurethane A with an acid value of 8 to 40 mg KOH/g and a hard segment content ?40 wt %, a ring structure content ?48 wt % and 80 to 20 wt % of a vinyl polymer B with a Tg?20° C.Type: GrantFiled: December 14, 2004Date of Patent: July 7, 2015Assignee: DSM IP ASSETS B.V.Inventors: Rajasingham Satgurunathan, Gerardus Cornelis Overbeek, Marc Roelands, Ronald Tennebroek, Roel Johannes Marinus Swaans, Gerhardus Antonius Roescher
-
Patent number: 8795830Abstract: 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 ?20° C. to 40° C. and a hard phase having a Tg in the range of from 25° C. to 120° 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.Type: GrantFiled: January 11, 2010Date of Patent: August 5, 2014Assignee: DSM IP Assets B.V.Inventors: Paul Wyman, de Nik Bont, Hinrike Malda, Mamix Rooijmans, Jurgen Scheerder, Rajasingham Satgurunathan, Thomas L. M. Frijns
-
Publication number: 20140205759Abstract: An aqueous coating composition comprising (i) a polyurethane obtained by the reaction of (a) an isocyanate-terminated pre-polymer obtained from the reaction of components comprising at least one polyisocyanate of which at least 50 wt % is at least one aliphatic polyisocyanate; in an NCO/OH ratio in the range of from 1.75 to 1.05; and (b) an active-hydrogen chain-extending compound; and (ii) a vinyl polymer having a Tg below ambient temperature.Type: ApplicationFiled: March 25, 2014Publication date: July 24, 2014Applicant: DSM IP ASSETS B.V.Inventors: Rajasingham SATGURUNATHAN, Marc ROELANDS, Jurgen SCHEERDER, Alexander Wilhelmus Martinus Cornelis DONDERS
-
Publication number: 20140205767Abstract: There is described a substantially solid, solvent free, radiation curable composition comprising a) optionally from 0.1% to 99.9% by weight of a colorant; and b) from 0.1% to 99.9% of radiation curable polymer obtained and/or obtainable from at least one mono-(terminal functional forming) monomer of formula I: R1(R2)C?CR3(C?O)(X1)nR4 Formula 1, where n is 0 or 1, X1 is oxy or —NR5— (where R5 represents H or optionally substituted organo), R1 independently represents optionally substituted C1-10hydrocarbo, hydroxyl, optionally substituted C2-10hydrocarbo-oxy comprising a ring moiety, and/or carboxy; and R2, R3 and R4 each independently represent H, an optional substituent and/or optionally substituted organo groups and where n is 0, R3 may also represent oxy or —NR5—; and c) optionally from 0.1% to 90% of a radiation curable high molecular weight reactive diluent; and d) optionally from 0.Type: ApplicationFiled: March 13, 2014Publication date: July 24, 2014Applicant: DSM IP ASSETS B.V.Inventors: Rajasingham SATGURUNATHAN, Emilio MARTIN, Adrianus Antonius Johannes VAN GEEL, Franciscus Adrianus Johannes SUYKERBUYK, Daniela SENATORE, Alfred Jean Paul BÜCKMANN
-
Publication number: 20130172439Abstract: There is described a substantially solid, solvent free, radiation curable composition comprising a) optionally from 0.1% to 99.9% by weight of a colorant; and b) from 0.1% to 99.9% of radiation curable polymer obtained and/or obtainable from at least one mono-(terminal functional forming) monomer of formula I: R1(R2)C?CR3(C?O)(X1)nR4 Formula 1, where n is 0 or 1, X1 is oxy or —NR5— (where R5 represents H or optionally substituted organo), R1 independently represents optionally substituted C1-10hydrocarbo, hydroxyl, optionally substituted C2-10hydrocarbo-oxy comprising a ring moiety, and/or carboxy; and R2, R3 and R4 each independently represent H, an optional substituent and/or optionally substituted organo groups and where n is 0, R3 may also represent oxy or —NR5—; and c) optionally from 0.1% to 90% of a radiation curable high molecular weight reactive diluent; and d) optionally from 0.Type: ApplicationFiled: December 17, 2010Publication date: July 4, 2013Inventors: Rajasingham Satgurunathan, Emilio Martin, Adrianus Antonius Johannes Van Geel, Franciscus Adrianus Johannes Suykerbuyk, Daniela Senatore, Alfred Jean Paul Bückmann
-
Publication number: 20120041545Abstract: 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 ?20° C. to 40° C. and a hard phase having a Tg in the range of from 25° C. to 120° 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.Type: ApplicationFiled: January 11, 2010Publication date: February 16, 2012Inventors: Paul Wyman, de Nik Bont, Hinrike Malda, Mamix Rooijmans, Jurgen Scheerder, Rajasingham Satgurunathan, ThomasL L.M. Frijns
-
Publication number: 20110020556Abstract: An aqueous coating composition comprising (i) a polyurethane obtained by the reaction of (a) an isocyanate-terminated pre-polymer obtained from the reaction of components comprising at least one polyisocyanate of which at least 50 wt % is at least one aliphatic polyisocyanate; in an NCO/OH ratio in the range of from 1.75 to 1.05; and (b) an active-hydrogen chain-extending compound; and (ii) a vinyl polymer having a Tg below ambient temperature.Type: ApplicationFiled: December 8, 2008Publication date: January 27, 2011Inventors: Rajasingham Satgurunathan, Marc Roelands, Jurgen Scheerder, Alexander Wilhelmus Martinus Cornelis Donders
-
Patent number: 7833584Abstract: Aqueous coating composition comprising a blend of 20 to 60 wt % of a multistage vinyl polymer (A) comprising 5 to 40 wt % of at least one hard polymer stage (i) having a Tg?50° C. and 95 to 60 wt % of at least one soft polymer stage (ii) having a Tg??5° C.; and 80 to 40 wt % of a vinyl oligomer-polymer (B) comprising 15 to 50 wt % of at least one alkaline soluble oligomer (iii) and 85 to 50 wt % of at least one vinyl polymer (iv) having a Tg in the range of from ?20 to 30° C.Type: GrantFiled: March 31, 2006Date of Patent: November 16, 2010Assignee: DSM IP Assets B.V.Inventors: John Geurts, Rajasingham Satgurunathan, Jan Bouman, Gerardus Cornelis Overbeek
-
Publication number: 20090068367Abstract: Aqueous coating composition comprising a blend of 20 to 60 wt % of a multistage vinyl polymer (A) comprising 5 to 40 wt % of at least one hard polymer stage (i) having a Tg?50° C. and 95 to 60 wt % of at least one soft polymer stage (ii) having a Tg??5° C.; and 80 to 40 wt % of a vinyl oligomer-polymer (B) comprising 15 to 50 wt % of at least one alkaline soluble oligomer (iii) and 85 to 50 wt % of at least one vinyl polymer (iv) having a Tg in the range of from ?20 to 30° C.Type: ApplicationFiled: March 31, 2006Publication date: March 12, 2009Inventors: John Geurts, Rajasingham Satgurunathan, Jan Bouman, Gerardus Cornelis Overbeek
-
Publication number: 20070141264Abstract: An aqueous coating composition, which when in the form of a film exhibits an MVTR of ?500 g/m2/24 h comprising 20 to 80 wt % of a polyurethane A with an acid value of 8 to 40 mg KOH/g and a hard segment content ?40 wt %, a ring structure content ?48 wt % and 80 to 20 wt % of a vinyl polymer B with a Tg?20° C.Type: ApplicationFiled: December 14, 2004Publication date: June 21, 2007Applicant: DSM IP ASSETS B.V.Inventors: Rajasingham Satgurunathan, Gerardus Overbeek, Marc Roelands, Ronald Tennebroek, Roel Johannes Swaans, Gerhardus Roescher
-
Publication number: 20060258801Abstract: An aqueous coating composition comprising: (i) (10) to (80) wt % of a polyurethane A which exhibits a minimum film forming temperature of ?ambient temperature and which comprises a polyurethane obtained by the reaction of: (a) an isocyanate-terminated pre-polymer formed from components which comprise: (1) 10 to 30 wt % of a polyisocyanate; (2) 0.1 to 10 wt % of a polyol of weight average molecular weight less than 500, containing ionic or potentially ionic water-dispersing groups, and having two or more isocyanate-reactive groups; (3) 0 to 15 wt % of a polyol containing non-ionic water dispersing groups having two or more isocyanate-reactive groups; (4) 40 to 80 wt % of a polyol other than (2) or (3), having two or more isocyanate-reactive groups; where (1), (2), (3) and (4) add up to 100%; and (b) an active-hydrogen chain extending compound; and (ii) 20 to 90 wt % of a polymer dispersion B which exhibits a minimum film forming temperature of above ambient temperature; wherein (i) and (ii) add up to 100%.Type: ApplicationFiled: July 26, 2004Publication date: November 16, 2006Inventors: Emilio Martin, Gerardus Overbeek, Marc Roelands, Rajasingham Satgurunathan
-
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
-
Publication number: 20040260005Abstract: 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: ApplicationFiled: February 27, 2004Publication date: December 23, 2004Inventors: Alan Jack Gould, Jan Bouman, Rajasingham Satgurunathan
-
Patent number: 5977250Abstract: A chiral (R) stereospecific polyhydroxyalkanoate (PHA) in aqueous latex form having virgin disperse phase particles of very low or undetectable crystallinity is useful in making a water-sensitive structure water-resistant. It may be used as a mixture with a latex of a synthetic polymer. Processes for making the PHA latex are disclosed.Type: GrantFiled: November 24, 1997Date of Patent: November 2, 1999Assignee: Monsanto CompanyInventors: Neil George, Timothy Hammond, John MacDonald Liddell, Rajasingham Satgurunathan, Peter Deryk Turner
-
Patent number: 5656685Abstract: An aqueous crosslinkable coating composition comprising an aqueous dispersion of: (A) at least one copolymer, said copolymer being obtainable or derived from the addition polymerization of 2 or more olefinically unsaturated monomers and bearing lateral carboxyl groups which are provided at least in part by polymerized units in said copolymer of a monomer of formula: CH.sub.2 .dbd.CR.sup.1 --Q--CO.sub.2 H, where R.sup.1 is H or lower alkyl of 1 to 5 carbon atoms and Q is a non carboxy-containing spacer group providing a spacer chain of a least 3 atoms, and (B) at least one carboxyl-reactive material for providing crosslinking during and/or after coating formation from the composition in which the polymer-bound carboxyl groups provided by the monomer of formula take part, and wherein the components (A) and (B) are provided by different and/or the same substance(s).Type: GrantFiled: October 21, 1994Date of Patent: August 12, 1997Assignee: Zeneca LimitedInventors: Rajasingham Satgurunathan, John Christopher Padget, John Gerard Carey
-
Patent number: 5593730Abstract: Powder coating composition which comprises a hybrid polymer system in granular form of a polymer A formable from monomer(s) by aqueous suspension polymerisation and a polymer B, different to A, which polymer system has been obtained using a process which comprises dissolving polymer B in monomeric material to be used in the formation of polymer A, polymerising the monomer(s) to form polymer A using an aqueous suspension polymerisation process, and removing the aqueous phase to form a hybrid of the polymers A and B in granular form, and wherein polymer A and polymer B bear functional groups for imparting curability to the hybrid polymer system, and wherein further the hybrid polymer system has a number average molecular weight within the range of from 1500 to 15,000.Type: GrantFiled: January 13, 1995Date of Patent: January 14, 1997Assignee: Zeneca LimitedInventors: Rajasingham Satgurunathan, David C. Hinde, John C. Padget, Stephen G. Yeates
-
Patent number: 5547710Abstract: Aqueous curable polymer dispersion comprising a polyester and/or polyurethane and a polymeric product having a Tg from 25.degree.-100.degree. C. obtainable by free-radical polymerisation of a mixture of (a) an olefinic monomer free from epoxy and epoxy reactive groups, (b) a monomer and/or oligomer having at least two epoxy groups and (c) a group reactive towards epoxy groups.Type: GrantFiled: November 3, 1994Date of Patent: August 20, 1996Assignee: Zeneca LimitedInventors: Rajasingham Satgurunathan, David C. Hinde, John C. Padget, John G. Carey