Patents by Inventor Jose F. Pazos

Jose F. Pazos 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).

  • Publication number: 20150218303
    Abstract: The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed.
    Type: Application
    Filed: April 16, 2015
    Publication date: August 6, 2015
    Inventors: Jack R. Reese, Edward P. Browne, Steven J. Rodberg, Jose F. Pazos, Brian L. Neal
  • Patent number: 9051412
    Abstract: The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 9, 2015
    Assignee: Bayer MaterialScience LLC
    Inventors: Jack R. Reese, Edward P. Browne, Steven J. Rodberg, Jose F. Pazos, Brian L. Neal
  • Patent number: 8987396
    Abstract: Polymer polyols having a solids content of greater than 40 wt. %, a total ethylene oxide content of up to 25 wt. %, and a viscosity at 25° C. of less than 15,000 centistokes are produced by reacting (1) a base polyol having active hydrogen atoms with an ethylene oxide content of from 15 to 40 wt. % that has been formed in the presence of a double metal cyanide (DMC) catalyst, (2) one or more unsaturated monomers, (3) at least one radical initiator, optionally (4) a preformed stabilizer and optionally (5) a chain transfer agent. These polymer polyols (PMPOs) are useful in the preparation of polyurethane foams and elastomers.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 24, 2015
    Assignee: Bayer MaterialScience LLC
    Inventors: Rick L. Adkins, Jose F. Pazos, Stanley L. Hager
  • Patent number: 8877863
    Abstract: The present invention provides a process for preparing a polymer polyol (PMPO) by alkoxylating a starter compound(s) having active hydrogen atoms in the presence of a double metal cyanide (DMC) catalyst, radical initiator(s) and optionally PMPO stabilizers and simultaneously polymerizing unsaturated monomer(s) with radical initiator(s). The polymer polyols (PMPOs) made by the inventive process may find use in the preparation of polyurethane foams and elastomers.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: November 4, 2014
    Assignee: Bayer MaterialScience LLC
    Inventors: Jose F. Pazos, John E. Hayes
  • Publication number: 20140275471
    Abstract: Polymer polyols having a solids content of greater than 40 wt. %, a total ethylene oxide content of up to 25 wt. %, and a viscosity at 25° C. of less than 15,000 centistokes are produced by reacting (1) a base polyol having active hydrogen atoms with an ethylene oxide content of from 15 to 40 wt. % that has been formed in the presence of a double metal cyanide (DMC) catalyst, (2) one or more unsaturated monomers, (3) at least one radical initiator, optionally (4) a preformed stabilizer and optionally (5) a chain transfer agent. These polymer polyols (PMPOs) are useful in the preparation of polyurethane foams and elastomers.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Rick L. Adkins, Jose F. Pazos, Stanley L. Hager
  • Publication number: 20140275312
    Abstract: The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: Bayer MaterialScience LLC
    Inventors: Jack R. Reese, Edward P. Browne, Steven J. Rodberg, Jose F. Pazos, Brian L. Neal
  • Publication number: 20130261207
    Abstract: The present invention provides a process for preparing a polymer polyol (PMPO) by alkoxylating a starter compound(s) having active hydrogen atoms in the presence of a double metal cyanide (DMC) catalyst, radical initiator(s) and optionally PMPO stabilizers and simultaneously polymerizing unsaturated monomer(s) with radical initiator(s).
    Type: Application
    Filed: May 23, 2013
    Publication date: October 3, 2013
    Applicant: Bayer MaterialScience LLC
    Inventors: Jose F. Pazos, John E. Hayes
  • Patent number: 8470927
    Abstract: The present invention provides a process for preparing a polymer polyol (PMPO) by alkoxylating a starter compound(s) having active hydrogen atoms in the presence of a double metal cyanide (DMC) catalyst, radical initiator(s) and optionally PMPO stabilizers and simultaneously polymerizing unsaturated monomer(s) with radical initiator(s). The polymer polyols (PMPOs) made by the inventive process may find use in the preparation of polyurethane foams and elastomers.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: June 25, 2013
    Assignee: Bayer MaterialScience LLC
    Inventors: Jose F. Pazos, John E. Hayes
  • Publication number: 20130023599
    Abstract: The present invention provides polyurethane foams and elastomers made with an alkoxylated vegetable oil hydroxylate replacing at least a portion of the typically used petroleum-based polyol(s). Also provided are processes for making the inventive foams and elastomers and for making alkoxylated vegetable oil hydroxylates. The alkoxylated vegetable oil hydroxylates are environmentally-friendly, bio-based polyols which advantageously also offer the potential of improved hydrophobicity in polyurethane foams and elastomers. The inventive polyurethane foams and elastomers may find use in a wide variety of products such as automobile interior parts, polyurethane structural foams, floor coatings and athletic running tracks.
    Type: Application
    Filed: September 26, 2012
    Publication date: January 24, 2013
    Applicant: Bayer MaterialScience LLC
    Inventors: Yu-Ling Hsiao, Richard G. Skorpenske, Bryan D. Kaushiva, Kenneth G. McDaniel, Jose F. Pazos, Stanley L. Hager, Karl W. Haider
  • Publication number: 20110230581
    Abstract: Polyether polyols with an OH number of from 15 to 120 mg of KOH/g are produced by (i) introducing a mixture of DMC catalyst and a poly(oxyalkylene)polyol or a mixture of DMC catalyst and a polyether polyol (“heel”) obtainable by the process according to the invention is initially into a reactor and (ii) continuously introducing one (or more) low molecular weight starter compound(s) with a (mixed) hydroxyl functionality of from 2.2 to 6.0 and a mixture composed of a) 73 to 80 parts by weight (per 100 parts by weight of a) plus b)) of ethylene oxide and b) 27 to 20 parts by weight (per 100 parts by weight of a) plus b)) of at least one substituted alkylene oxide corresponding to a specified formula into the mixture from step (i). These polyether polyols are particularly useful for the production of flexible polyurethane foams.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 22, 2011
    Applicants: Bayer MaterialScience LLC, Bayer MaterialScience AG
    Inventors: Bert Klescewski, Jörg Hofmann, Klaus Lorenz, Jack R. Reese, Jose F. Pazos
  • Publication number: 20100324340
    Abstract: The present invention provides a process for the polyoxyalkylation of a starter involving establishing oxyalkylation conditions in an oxyalkylation reactor in the presence of a double metal cyanide (DMC) catalyst, continuously introducing into the reactor at least one alkylene oxide and an acidified, ultra-low water content starter, in which the starter contains greater than about 100 ppm and less than or equal to about 500 ppm water, based on the weight of the starter, and recovering an oxyalkylated low molecular weight starter polyether product. The inventive process allows the production of short chain polyether polyols which have hydroxyl numbers of from greater than 250 up to about 500, from hygroscopic initiators, such as glycerin, without DMC catalyst deactivation.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Applicant: Bayer MaterialScience LLC
    Inventors: Jose F. Pazos, Edward P. Browne, Anthony Loveday
  • Patent number: 7323605
    Abstract: The present invention provides a process for the double metal cyanide (DMC)-catalyzed production of low unsaturation polyethers from boron-containing starters. The polyethers produced by the inventive process may be reacted with one or more isocyanates to provide polyurethane products including coatings, adhesives, sealants, elastomers, foams and the like. The inventive process may be used to prepare fuel additives from C9-C30 boron-containing polyethers, more particularly from C13 alcohols.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: January 29, 2008
    Assignee: Bayer MaterialScience LLC
    Inventors: Jose F. Pazos, Kenneth G. McDaniel, Edward P. Browne, George G. Combs, Don S. Wardius
  • Publication number: 20080021191
    Abstract: The present invention provides a process for the production of a polyether involving establishing oxyalkylation conditions in an oxyalkylation reactor in the presence of from about 5 ppm to about 1,000 ppm, based on the final polyether weight, of a double metal cyanide (DMC) catalyst, continuously introducing into the reactor at least one alkylene oxide and a low molecular weight starter having a number average molecular weight of less than about 300 Daltons (Da) containing from about 200 ppm to about 5,000 ppm water and acidified with from about 10 ppm to about 2,000 ppm of at least one of an inorganic protic mineral acid and an organic acid, and recovering a polyether product having a number average molecular weight of from about 200 Da to about 4,000 Da, wherein the ppm (parts per million) of water and acid are based on the weight of the low molecular weight starter.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 24, 2008
    Inventors: Jack R. Reese, Edward P. Browne, Jose F. Pazos
  • Patent number: 6776925
    Abstract: The present invention relates to a process for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds containing active hydrogen atoms conducted in the presence of a double-metal cyanide catalyst wherein a reaction mixture is guided at least once through a zone which has an energy density of at least 105 J/m3 and wherein the residence time of the reaction mixture in this zone is at least 10−6 seconds per pass.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: August 17, 2004
    Assignees: Bayer Aktiengesellschaft, Bayer Polymers LLC
    Inventors: Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein, Bert Klesczewski, Jose F. Pazos
  • Publication number: 20040064001
    Abstract: The present invention is directed to a process for preparing ethylene oxide-capped polyols which involves combining a double-metal cyanide-catalyzed polyol with a basic catalyst. The present invention is also directed to a process for preparing ethylene oxide-capped polyols which involves combining a double-metal cyanide-catalyzed polyol with a base-catalyzed polyol. The present invention is also directed to a process for preparing ethylene oxide-capped polyols in which removal of catalyst residues or salts formed by the neutralization of the basic catalyst is not required. The polyols produced by the processes of the present invention have a relatively high content of primary hydroxyl groups.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventors: Stephan Ehlers, Jose F. Pazos, Christian Steinlein, Michael Schneider, Jorg Hofmann, Majid Keyvani, John E. Hayes
  • Patent number: 6670406
    Abstract: The present invention relates to a process for the production of a polyether polyol by polyaddition of an alkylene oxide onto a starter compound containing active hydrogen atoms conducted in the presence of a double metal cyanide catalyst comprising conducting a reaction mixture at least once through a zone which has an energy density of at least 5×106 J/m3, wherein the dwell time of the reaction mixture in this zone is at least 10−6 seconds per pass.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: December 30, 2003
    Assignees: Bayer Aktiengesellschaft, Bayer Polymers LLC
    Inventors: Jörg Hofmann, Stephan Ehlers, Bernd Klinksiek, Bert Klesczewski, Christian Steinlein, Lars Obendorf, Harald Pielartzik, Jose F. Pazos
  • Publication number: 20020198278
    Abstract: The present invention relates to a process for the production of a polyether polyol by polyaddition of an alkylene oxide onto a starter compound containing active hydrogen atoms conducted in the presence of a double metal cyanide catalyst comprising conducting a reaction mixture at least once through a zone which has an energy density of at least 5×106 J/m3, wherein the dwell time of the reaction mixture in this zone is at least 10−6 seconds per pass.
    Type: Application
    Filed: February 19, 2002
    Publication date: December 26, 2002
    Inventors: Jorg Hofmann, Stephan Ehlers, Bernd Klinksiek, Bert Klesczewski, Christian Steinlein, Lars Obendorf, Harald Pielartzik, Jose F. Pazos
  • Publication number: 20020169229
    Abstract: The present invention relates to a process for the production of polyether polyols by polyaddition of alkylene oxides onto starter compounds containing active hydrogen atoms conducted in the presence of a double-metal cyanide catalyst wherein a reaction mixture is guided at least once through a zone which has an energy density of at least 105 J/m3 and wherein the residence time of the reaction mixture in this zone is at least 10−6 seconds per pass.
    Type: Application
    Filed: February 19, 2002
    Publication date: November 14, 2002
    Inventors: Jorg Hofmann, Stephan Ehlers, Bernd Klinksiek, Lars Obendorf, Christian Steinlein, Bert Klesczewski, Jose F. Pazos
  • Patent number: 6083420
    Abstract: During polyoxyalkylation in the presence of certain double metal cyanide catalysts, a very high molecular weight hydrophobic fraction, i.e. a "tail", is produced during preparation of high secondary hydroxyl polyols which is believed to contribute to foam collapse in polyurethane foam formulations. The processing latitude of such foams may be improved by altering the hydrophile/lipophile balance of the high molecular weight tail by oxyalkylating with a mixture of ethylene oxide and higher alkylene oxide during the greatest portion of total oxyalkylation such that essentially pure higher alkylene oxide is present in a terminal portion of oxyalkylation not exceeding 15 weight percent of total polyol weight.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: July 4, 2000
    Assignee: Bayer Antwerp N.V.
    Inventors: Jeffrey J. Lear, Oliver D. Sloan, Jose F. Pazos
  • Patent number: 5958994
    Abstract: During polyoxyalkylation in the presence of certain double metal cyanide catalysts, a very high molecular weight hydrophobic fraction, i.e. a "tail", is produced during preparation of high secondary hydroxyl polyols which is believed to contribute to foam collapse in polyurethane foam formulations. The processing latitude of such foams may be improved by altering the hydrophile/lipophile balance of the high molecular weight tail by oxyalkylating with a mixture of ethylene oxide and higher alkylene oxide during the greatest portion of total oxyalkylation such that essentially pure higher alkylene oxide is present in a terminal portion of oxyalkylation not exceeding 15 weight percent of total polyol weight.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: September 28, 1999
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Jeffrey J. Lear, Oliver D. Sloan, Jose F. Pazos