Abstract: A crosslinked polymeric bead comprising a polymer having from 0.5 mole percent to 2 mole percent crosslinker. The bead has a diameter no greater than 200 ?m, no void spaces having a diameter greater than 5 ?m, and less than 5 weight percent of organic extractables.
Type:
Grant
Filed:
August 7, 2003
Date of Patent:
June 19, 2007
Assignee:
Rohm and Haas Company
Inventors:
James Charles Bohling, Marlin Kenneth Kenzey, John Joseph Maikner, James Franklin Tate, Jr.
Abstract: A method for brightening virgin mechanical pulp. The method comprises combining: (i) an aqueous solution comprising sodium borohydride and sodium hydroxide; and (ii) an aqueous solution comprising sodium bisulfite, in a chemical mixer and adding output of the chemical mixer to an aqueous slurry of virgin mechanical pulp. The ratio of (moles bisulfite?moles hydroxide)/moles borohydride is from 0 to 7.8.
Type:
Grant
Filed:
October 31, 2003
Date of Patent:
January 16, 2007
Inventors:
Jean Luc Sibiet, Sundar Chellappan Jaya Krishnan, Joseph Najim, Maurice Joseph Albert Hache
Abstract: A method for marking a liquid petroleum hydrocarbon. The method comprises adding to the liquid petroleum hydrocarbon a pyrazinoporphyrazine dye having an absorption maximum from 700 nm to 900 nm.
Abstract: A dosage form comprising a resin/resinate combination is described. Said dosage form allows optimization of the release rate profile of active ingredients.
Type:
Grant
Filed:
March 26, 2002
Date of Patent:
December 26, 2006
Assignee:
Rohm and Haas Company
Inventors:
Lyn Hughes, Simon Andrew Bellamy, Christina Hann
Abstract: An aqueous composition comprising at least 18% surfactant and colloidal inorganic clay. This composition is stable with regard to phase separation at 40° C. for at least three months and exhibits increased low-shear viscosity relative to a composition without clay. The composition comprises at least one lipophilically-modified copolymer containing acrylic acid residues and C2–C4 alkyl (meth)acrylate residues.
Abstract: A composition containing: (a) 0.001% to 20% of at least one compound represented by formula (II), wherein R5 is C1–C70 difunctional alkyl or C6–C14 difunctional aryl, and R3and R4 independently are hydrogen, alkyl, heterocyclic, aryl or aralkyl groups; and (b) crude oil. In addition to dispersing asphaltenes, the composition of the present invention typically also increases demulsibility, reduces viscosity, reduces sediment formation, reduces surface fouling and reduces corrosion.
Abstract: A method for dispersing asphaltenes in a petroleum product by adding to the petroleum product 0.001% to 20% of at least one compound having formula (V) wherein R14 is C15–C21 alkyl. In addition to dispersing asphaltenes, the method of the present invention typically also increases demulsibility, reduces viscosity, reduces sediment formation, reduces surface fouling and reduces corrosion.
Abstract: A method for making a compound of formula (I) wherein bonds a and b are single or double bonds, provided that one of a and b is a single bond and the other is a double bond; one of B1 and B2 is —CHR5—CHR6—C(Y)ZR7 and the other is absent; B3 is hydrogen; Y is O or S; Z is O, S or NR9; R5 is hydrogen or C1–C4 alkyl; R6 is hydrogen or C1–C4 alkyl; R7, R9 are independently hydrogen, alkyl, alkenyl, aryl or aralkyl. The method comprises steps of: (a) preparing an imidazolidinethione having formula by combining a cyanide source, a sulfide salt, and at least one ketone or aldehyde; and (b) adding to the imidazolidinethione, without isolation of the imidazolidinethione, CHR5?CR6—C(O)OR7.
Abstract: A method for brightening pulp at a pH from 4.5 to 9. The method comprises the steps of: (a) combining an alkali metal borohydride, an alkali metal hydroxide, an alkali metal bisulfite and phosphoric acid to form a reducing solution; and (b) adding the reducing solution to a pulp slurry in an amount from 0.1% to 4% of hydrosulfite based on dry pulp fiber.
Abstract: A wax containing the reaction product of: (a) a C6–C12 linear dicarboxylic acid; and (b) a diamine of formula H2N(CH2)nNH2, wherein n is an integer from 2 to 6, and the molar ratio of the C6–C12 linear dicarboxylic acid to the diamine is from 0.97 to 1.06.
Type:
Grant
Filed:
March 26, 2004
Date of Patent:
March 7, 2006
Assignee:
Rohm and Haas Company
Inventors:
Gene Kelly Norris, Rajiv Manohar Banavali
Abstract: A composition comprising: (a) from 0.1% to 20% of at least one cyclic compound having a nitroxyl group and a thioamide group; and (b) a lubricating oil.
Abstract: A method for marking a liquid petroleum hydrocarbon. The method comprises adding to the liquid petroleum hydrocarbon at least one substituted anthraquinone dye having formula (I) wherein R1 and R2 independently are hydrogen, hydroxy, OR11, amino or NR11R12; R3 and R5 independently are alkyl, aryl, aralkyl, heteroalkyl or heterocyclic; R4 and R6 independently are hydrogen or alkyl; R7, R8, R9 and R10 independently are cyano, nitro or hydrogen, provided that at least two of R7, R8, R9 and R10 are cyano or nitro; R11 is alkyl, aryl, aralkyl, heteroalkyl, heterocyclic or alkanoyl; R12 is hydrogen or alkyl; and wherein the substituted anthraquinone dye(s) has an absorption maximum in the range from 690 nm to 1000 nm.
Abstract: A fluid treatment system comprising at least two cylindrical vessels, wherein each vessel contains at least one treatment medium selected from ion exchange resins, polymeric adsorbents, inorganic adsorbents and activated carbon; each vessel has at each end a flat head and a fractal liquid transfer manifold; and the system comprises at least one membrane degasifier unit.
Type:
Grant
Filed:
April 2, 2004
Date of Patent:
November 1, 2005
Inventors:
Jay Alfred Miers, Jr., James Thomas McNulty
Abstract: Disclosed are means for improving the service-life of indirect tubesheet type heat exchangers used in chemical reactors, particularly those exposed to reducing, nitridizing and/or carburizing environments. Such means include the use of certain ferrules within the heat exchange tubes and/or weld types used in construction of these heat exchangers.
Type:
Grant
Filed:
May 13, 2003
Date of Patent:
November 1, 2005
Assignee:
Rohm and Haas Company
Inventors:
Paul Joseph Blanda, Jr., Michael Stanley DeCourcy
Abstract: A method for functionalizing a crosslinked polymer bead. The method comprises the steps of: (a) swelling the bead in a first solvent or solvent mixture to a volume from 200% to 310% of its volume when dry; and (b) contacting the bead with a functionalizing reagent in a second solvent or solvent mixture capable of swelling the bead to a volume from 200% to 310% of its volume when dry.
Type:
Grant
Filed:
August 7, 2003
Date of Patent:
September 6, 2005
Assignee:
Rohm and Haas Company
Inventors:
James Charles Bohling, Marlin Kenneth Kinzey, John Joseph Maikner, William Joseph Zabrodski
Abstract: A method for encoding a polymer. The method comprises incorporating, into a polymer formed by polymerizing at least one bulk monomer, from 0.1 ppm to 1% each of at least two additional monomer residues.
Abstract: Method for invisibly marking a liquid petroleum hydrocarbon. The method comprises adding to the liquid petroleum hydrocarbon at least one dye selected from the group consisting of 1,4,5,8-tetrasubstituted anthraquinones and anthraquinone dimers. The absorption maximum of the dye(s) is in the range from 710 nm to 850 nm.
Abstract: A catalyst comprising a promoted mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated nitrile.
Type:
Grant
Filed:
May 7, 2003
Date of Patent:
September 14, 2004
Assignee:
Rohm and Haas Company
Inventors:
Sanjay Chaturvedi, Anne Mae Gaffney, Scott Han, Michele Doreen Heffner, Ruozhi Song