Patents by Inventor Carmen L. Rodriguez

Carmen L. Rodriguez 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: 20030125493
    Abstract: (Meth)acrylate esters of oxyalkylated aralkylated, multi-ring phenolic hydroxyl-containing compounds may be prepared with relatively low viscosity, and are effective as coating composition additives, in particular as adhesion promoters.
    Type: Application
    Filed: October 26, 2001
    Publication date: July 3, 2003
    Inventors: Stephen H. Harris, Carmen L. Rodriguez
  • Patent number: 6541673
    Abstract: Phenolic polyether polyols are prepared by a two stage oxyalkylation process, a first stage performed at a high oxyalkylation temperature and a second stage at a lower oxyalkylation temperature. Despite the use of high temperature during oxyalkylation, polydispersity is substantially unaffected, while process time is drastically reduced.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: April 1, 2003
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, Jude T. Ruszkay
  • Patent number: 6350811
    Abstract: A water-dispersible polyurethane resin is disclosed. The resin comprises recurring units of an alkoxylated phenolic resin, a carboxylate-containing diol, and a multifunctional isocyanate. The resin, which can be neutralized, and/or chain-extended, is dispersed in water to form a polyurethane dispersion. Coatings derived from the polyurethane dispersions have excellent acid and chemical resistance.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: February 26, 2002
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, Stephen L. Goldstein
  • Patent number: 6245877
    Abstract: A moisture-cure urethane composition is disclosed. The urethane is formulated from an NCO-terminated alkoxylated phenolic resin that has long oxyalkylene chains. It has greater than 70 wt % solids and has excellent resistance to acids, bases, and chemicals.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: June 12, 2001
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, Stephen L. Goldstein
  • Patent number: 5581000
    Abstract: Hydrogen peroxide is produced by oxidizing alkylammonium salts of sulfonic acid-substituted anthrahydroquinones. As said salts are highly soluble in protic polar solvents such as water and lower aliphatic alcohols, the concentration of hydrogen peroxide in the reaction product thereby obtained may be advantageously high. The anthraquinone salt co-product generated by such oxidation may be readily converted in high yield back to the starting anthrahydroquinone salt by hydrogenation.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 3, 1996
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, John G. Zajacek
  • Patent number: 5540906
    Abstract: Hydrogen peroxide is produced by oxidizing alkylammonium salts of sulfonic acid-substituted anthrahydroquinones. As said salts are highly soluble in protic polar solvents such as water and lower aliphatic alcohols, the concentration of hydrogen peroxide in the reaction product thereby obtained may be advantageously high. The anthraquinone salt co-product generated by such oxidation may be readily converted in high yield back to the starting anthrahydroquinone salt by hydrogenation.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: July 30, 1996
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, John G. Zajacek
  • Patent number: 5463090
    Abstract: Epoxides are produced by an integrated process involving molecular oxygen oxidation of an alkylammonium salt of a sulfonic acid-substituted anthrahydroquinone, epoxidation of an ethylenically unsaturated substrate using the hydrogen peroxide-containing product obtained by such oxidation in the presence of a titanium silicalite catalyst, and regeneration of the anthrahydroquinone by hydrogenation of the anthraquinone co-product. Oxidation and epoxidation may be performed concurrently. The alkylammonium salts have the advantage of being highly soluble in polar protic media such as water and lower alcohols.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: October 31, 1995
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, John G. Zajacek
  • Patent number: 5220061
    Abstract: A selective process for the preparation of diphenylmethane bis(dialkylureas) is disclosed. An alkyl phenylcarbamate or an N,N-dialkyl-N'-phenylurea is reacted with a methylene bis(alkyl carbamate) in the presence of an acid catalyst. The use of a staged addition of phenylcarbamate or phenylurea to the methylene bis(carbamate) and the use of a ramped temperature program are the keys to good selectivity to MDI dimer products.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: June 15, 1993
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, Edward T. Shawl, Haven S. Kesling, Jr.
  • Patent number: 5206412
    Abstract: A selective process for the preparation of diphenylmethane diisocyanate precursors is disclosed. An alkyl phenylcarbamate or an N,N-dialkyl-N'-phenylurea is reacted with a methylene bis(alkyl carbamate) in the presence of an acid catalyst. The use of a staged addition of phenylcarbamate or phenylurea to the methylene bis(carbamate) and the use of a ramped temperature program are the keys to good selectivity to MDI dimer products.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: April 27, 1993
    Assignee: Arco Chemical Technology, L.P.
    Inventors: Carmen L. Rodriguez, Edward T. Shawl, Haven S. Kesling, Jr.