Patents by Inventor Dinesh Pethiyagoda

Dinesh Pethiyagoda 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: 7718730
    Abstract: A two-component adhesive, sealant, or coating composition containing (i) a first component containing a portion of an alkoxysilane-functional urethane and water; and (ii) a second component containing the remaining portion of the alkoxysilane-functional urethane and a catalyst. The alkoxysilane-functional urethane includes the reaction product of (a) the reaction product of a hydroxy functional compound and a polyisocyanate, that contains isocyanate groups; with (b) an amine functional aspartate. The composition is used in a method of bonding a first substrate to a second substrate. The method includes (a) combining component i) and component ii) to form a mixture, applying a coating of the mixture to at least one surface of the first substrate or the second substrate, and contacting a surface of the first substrate with a surface of the second substrate. The method is used make an assembly.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: May 18, 2010
    Assignee: Bayer MaterialScience LLC
    Inventors: Richard R. Roesler, Kurt C. Frisch, Craig E. Jansen, Dinesh Pethiyagoda, Kevan E. Hudson
  • Publication number: 20090030146
    Abstract: An isocyanate-terminated prepolymer having an isocyanate group content of about 2 to 7% by weight is provided. The prepolymer comprises the reaction product of a) at least one polyether diol having a number average molecular weight of 3000 to 5000; b) at least one active-hydrogen containing material having a number average molecular weight of 200 to 700 and containing two or three hydroxyl groups and optionally one carboxy group; c) at least one hydroxyalkane carboxylic acid having a number average molecular weight of less than about 200; d) optionally, a polyether monol having a number average molecular weight between 400-3,000; e) optionally, a polyether triol having a number average molecular weight of 3,000 to 9,000; and f) an aliphatic and/or cycloaliphatic diisocyanate.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 29, 2009
    Inventors: Yuliya Berezkin, Peter D. Schmitt, Lyubov K. Gindin, Dinesh Pethiyagoda, Derek L. Crawford
  • Publication number: 20070149750
    Abstract: The present invention is directed to a friable, crystalline, fully blocked polyisocyanate prepared by reacting NTI with a pyrazole blocking agent.
    Type: Application
    Filed: February 22, 2007
    Publication date: June 28, 2007
    Inventors: Richard Roesler, James Rawlins, Eric Vidra, Dinesh Pethiyagoda
  • Patent number: 7144955
    Abstract: Solvent-based, dual cure coatings incorporating thermally curable blocked polyisocyanates, which also contain unsaturated linkages, and a method for preparing these coatings. The unsaturated linkages, such as acrylate groups, can be crosslinked by free-radical mechanisms such as UV curing.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: December 5, 2006
    Assignees: Bayer MaterialScience LLC, Bayer MaterialScience AG
    Inventors: Scott A. Grace, Michael J. Dvorchak, Richard R. Roesler, Dinesh Pethiyagoda, Michael K. Jeffries, Jan Weikard
  • Patent number: 7115696
    Abstract: A moisture-curable, alkoxysilane-functional polyether urethanes containing a) 20 to 90% by weight, of a polyether urethane containing two or more reactive silane groups and one or more polyether segments, where the polyether segments have a number average molecular weight (Mn) of at least 3000 and a degree of unsaturation of less than 0.04 milliequivalents/g, and the sum of Mn of all of the polyether segments per molecule averages 6000 to 20,000, and the reactive silane groups are incorporated by the reaction of an isocyanate group with a compound of formula and b) 10 to 80% by weight, of a polyether urethane containing one reactive silane group and one or more polyether segments having Mn of 1000 to 15,000.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: October 3, 2006
    Assignee: Bayer MaterialScience LLC
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Dinesh Pethiyagoda, Karsten Danielmeier
  • Publication number: 20060173140
    Abstract: A moisture-curable, alkoxysilane-functional polyether urethanes containing a) 20 to 90% by weight, of a polyether urethane containing two or more reactive silane groups and one or more polyether segments, where the polyether segments have a number average molecular weight (Mn) of at least 3000 and a degree of unsaturation of less than 0.04 milliequivalents/g, and the sum of Mn of all of the polyether segments per molecule averages 6000 to 20,000, and the reactive silane groups are incorporated by the reaction of an isocyanate group with a compound of formula and b) 10 to 80% by weight, of a polyether urethane containing one reactive silane group and one or more polyether segments having Mn of 1000 to 15,000.
    Type: Application
    Filed: October 22, 2003
    Publication date: August 3, 2006
    Inventors: Richard Roesler, Derek Crawford, Kurt Frisch, Dinesh Pethiyagoda, Karsten Danielmeier
  • Patent number: 7060750
    Abstract: An adhesive, sealant or coating composition that includes: a) 20 to 80% by weight, based on the weight of a), b), and c) of a polyether urethane containing two or more reactive silane groups and one or more polyether segments, b) 20 to 80% by weight, based on the weight of a), b), and c) of a polyether urethane containing one reactive silane group and one or more polyether segments, and c) 1 to 60% by weight, based on the weight of a), b), and c) of a pigment having a BET surface area of from 15 to 100 m2/g and an oil absorption of from 40 to 110 cc/100 g; where the sum of a), b), and c) does not exceed 100% by weight. The composition can be used to bond and/or coat substrates.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: June 13, 2006
    Assignee: Bayer MaterialScience LLC
    Inventors: Craig E. Jansen, Kurt C. Frisch, Richard R. Roesler, Dinesh Pethiyagoda, Kevan E. Hudson
  • Patent number: 6998459
    Abstract: The present invention relates to a polyether urethane containing one reactive silane group and one or more polyether segments having a number average molecular weight of 1000 to 15,000, wherein the reactive silane groups are incorporated by the reaction of an isocyanate group with a compound corresponding to the formula wherein X represents identical or different organic groups which are inert to isocyanate groups below 100° C., provided that at least two of these groups are alkoxy or acyloxy groups, Y represents a linear or branched alkylene group containing 1 to 8 carbon atoms and R1 represents an organic group which is inert to isocyanate groups at a temperature of 100° C. or less.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: February 14, 2006
    Assignee: Bayer MaterialScience LLC
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Dinesh Pethiyagoda, Karsten Danielmeier
  • Publication number: 20050245716
    Abstract: An adhesive, sealant or coating composition that includes: a) 20 to 80% by weight, based on the weight of a), b), and c) of a polyether urethane containing two or more reactive silane groups and one or more polyether segments, b) 20 to 80% by weight, based on the weight of a), b), and c) of a polyether urethane containing one reactive silane group and one or more polyether segments, and c) 1 to 60% by weight, based on the weight of a), b), and c) of a pigment having a BET surface area of from 15 to 100 m2/g and an oil absorption of from 40 to 110 cc/100 g; where the sum of a), b), and c) does not exceed 100% by weight. The composition can be used to bond and/or coat substrates.
    Type: Application
    Filed: April 28, 2004
    Publication date: November 3, 2005
    Inventors: Craig Jansen, Kurt Frisch, Richard Roesler, Dinesh Pethiyagoda, Kevan Hudson
  • Publication number: 20050245718
    Abstract: The present invention is directed to a crystalline, fully blocked polyisocyanate prepared by reacting NTI with a pyrazole blocking agent.
    Type: Application
    Filed: May 11, 2005
    Publication date: November 3, 2005
    Inventors: Richard Roesler, James Rawlins, Eric Vidra, Dinesh Pethiyagoda
  • Publication number: 20050137374
    Abstract: A two-component water-borne adhesive composition that includes a first component containing the reaction product obtained by reacting a polyisocyanates with a compound containing at least one hydroxyl or amine group followed by reaction with an aspartate compound and a second component containing a catalyst and/or a resin. The composition is used in a method of bonding a first substrate to a second substrate to form an assembly including at least the first substrate and the second substrate bonded together.
    Type: Application
    Filed: December 17, 2003
    Publication date: June 23, 2005
    Inventors: Richard Roesler, Jeffrey Dormish, Dinesh Pethiyagoda, Irene Yano
  • Publication number: 20050137324
    Abstract: A two-component adhesive, sealant, or coating composition containing (i) a first component containing a portion of an alkoxysilane-functional urethane and water; and (ii) a second component containing the remaining portion of the alkoxysilane-functional urethane and a catalyst. The alkoxysilane-functional urethane includes the reaction product of (a) the reaction product of a hydroxy functional compound and a polyisocyanate, that contains isocyanate groups; with (b) an amine functional aspartate. The composition is used in a method of bonding a first substrate to a second substrate. The method includes (a) combining component i) and component ii) to form a mixture, applying a coating of the mixture to at least one surface of the first substrate or the second substrate, and contacting a surface of the first substrate with a surface of the second substrate. The method is used make an assembly.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Richard Roesler, Kurt Frisch, Craig Jansen, Dinesh Pethiyagoda, Kevan Hudson
  • Publication number: 20050113550
    Abstract: The present invention is directed to a blocked polyisocyanate based on nonane triisocyanate. More particularly, the invention is directed to a blocked polyisocyanate useful in solvent borne coating compositions and comprising the reaction product of: a) nonane triisocyanate; b) a pyrazole blocking agent; and c) a diol or polyol.
    Type: Application
    Filed: November 26, 2003
    Publication date: May 26, 2005
    Inventors: Richard Roesler, Patricia Jacobs, Dinesh Pethiyagoda, Tabitha Riggio, Marianne Salek, Emery Yuhas
  • Publication number: 20050113548
    Abstract: The present invention is directed to a crystalline, fully blocked polyisocyanate prepared by reacting NTI with a blocking agent.
    Type: Application
    Filed: November 26, 2003
    Publication date: May 26, 2005
    Inventors: Richard Roesler, James Rawlins, Eric Vidra, Dinesh Pethiyagoda
  • Patent number: 6894138
    Abstract: The present invention is directed to a blocked polyisocyanate based on nonane triisocyanate. More particularly, the invention is directed to a blocked polyisocyanate useful in solvent borne coating compositions and comprising the reaction product of: a) nonane triisocyanate; b) a pyrazole blocking agent; and c) a diol or polyol.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: May 17, 2005
    Assignee: Bayer MaterialScience LLC
    Inventors: Richard R. Roesler, Patricia B. Jacobs, Dinesh Pethiyagoda, Tabitha H. Riggio, Marianne M. Salek, Emery Yuhas
  • Publication number: 20050090620
    Abstract: Solvent-based, dual cure coatings incorporating thermally curable blocked polyisocyanates, which also contain unsaturated linkages, and a method for preparing these coatings. The unsaturated linkages, such as acrylate groups, can be crosslinked by free-radical mechanisms such as UV curing.
    Type: Application
    Filed: October 27, 2003
    Publication date: April 28, 2005
    Inventors: Scott Grace, Michael Dvorchak, Richard Roesler, Dinesh Pethiyagoda, Michael Jeffries, Jan Weikard
  • Patent number: 6844413
    Abstract: A moisture-curable, alkoxysilane-functional polyether urethanes containing a) 20 to 90% by weight, of a polyether urethane containing two or more reactive silane groups and one or more polyether segments, where the polyether segments have a number average molecular weight (Mn) of at least 3000 and a degree of unsaturation of less than 0.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: January 18, 2005
    Assignee: Bayer MaterialScience LLC
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Dinesh Pethiyagoda, Karsten Danielmeier
  • Patent number: 6833423
    Abstract: A moisture curable, alkoxysilane-functional polyether urethanes containing a) 20 to 90% by weight, of a polyether urethane containing two or more reactive silane groups and polyether segments having a number average molecular weight (Mn) of at least 3000 and a degree of unsaturation of less than 0.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: December 21, 2004
    Assignee: Bayer Polymers LLC
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Dinesh Pethiyagoda, Karsten Danielmeier
  • Patent number: 6809170
    Abstract: Preparation of moisture-curable, alkoxysilane-functional polyether urethanes by reacting at an NCO:OH equivalent ratio of 1.5:1 to 2.5:1 a) a hydroxyl component containing i) 20 to 100 wt. %, of a polyether diol and other polyether segments, where the polyether segments have Mn of at least 3000 and degree of unsaturation of less than 0.04 meq/g, where the sum of Mn of polyether segments per molecule averages 6000 to 20,000, and ii) 0 to 80 wt. % of a polyether monool and other polyether segments having Mn of 1000 to 15,000, with b) an isocyanate component containing i) 20 to 100 wt. % of a diisocyanate, and ii) 0 to 80 wt. % of a monoisocyanate, forming an isocyanate-containing reaction product reacted at an equivalent ratio of 0.8:1 to 1.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: October 26, 2004
    Assignees: Bayer Materialscience LLC, Bayer Aktiengesellschaft
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Karsten Danielmeier, Dinesh Pethiyagoda, Gerhard Ruttmann
  • Publication number: 20040132950
    Abstract: A moisture-curable, alkoxysilane-functional polyether urethanes containing
    Type: Application
    Filed: October 22, 2003
    Publication date: July 8, 2004
    Inventors: Richard R. Roesler, Derek L. Crawford, Kurt C. Frisch, Dinesh Pethiyagoda, Karsten Danielmeier