Patents Represented by Attorney, Agent or Law Firm Michele A. Kovaleski
  • Patent number: 6291703
    Abstract: Substituted hydroxyhydrocinnamate esters of the formula (I) where R is alkyl, n is 0 to 2, m is 1 to 4 and A is alkyl, interrupted or uninterrupted alkylene, alkanetriyl or pentaerythrityl, are prepared by continuous transesterification of the corresponding lower alkyl mono-ester with an alkanol or polyol of the formula A-(OH)m. This novel process comprises continuously introducing into and reacting the reactants in a heated distillation column reactor having a reaction zone which contains a solid, heterogeneous transesterification catalyst to form the compound of formula (I) and the corresponding lower alkanol; separating the products so formed based on their difference in volatility; and continuously removing said products from the distillation column at a steady rate, thereby preventing the reaction mixture from reaching chemical equilibrium.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: September 18, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Robert Anthony Schaerfl, Jr., Michael James Day, Sean Peter Piecuch, Ronald Robert Tellier
  • Patent number: 6242638
    Abstract: The present invention relates to novel aromatic cyanate ester compounds containing at least two rings linked by a group containing an unsaturated group. The present invention further relates to compositions and prepolymers of said novel aromatic cyanate ester compounds. The present invention further relates to a process for preparing said compounds and cured articles resulting from curable mixtures thereof.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: June 5, 2001
    Assignee: Vantico Inc.
    Inventors: Bor-Sheng Lin, Michael James Amone
  • Patent number: 6197849
    Abstract: Organophilic phyllosilicates which have been prepared by treating a naturally occurring or synthetic phyllosilicate, or a mixture of such silicates, with a salt of a quaternary or other cyclic amidine compound, or with a mixture of such salts; polymeric systems, in particular thermoplastic polymers and thermosetting polymer systems, preferably epoxy resins, polyurethanes and rubbers, which comprise novel organophilic phyllosilicates, and also shapable moulding materials and finished mouldings in the form of composite materials, in particular in the form of nanocomposites.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: March 6, 2001
    Assignee: Vantico Inc.
    Inventors: Carsten Zilg, Rolf Mülhaupt, Jürgen Finter
  • Patent number: 6197861
    Abstract: Paint or coating compositions are stabilized by spiroindane compounds of the following formula wherein the numbered radicals R have he meanings given in claim 1, and optionally phosphite stabilizers and phenolic antioxidants.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: March 6, 2001
    Assignee: Vantico Inc.
    Inventor: Hugh Stephen Laver
  • Patent number: 6194490
    Abstract: A composition, which comprises (a) a compound containing at least one epoxy group in inner position per molecule, obtained by epoxidation of a natural unsaturated oil or of its derivative; (b) an epoxy compound selected from the group consisting of glycidyl ethers, glycidyl esters and cycloaliphatic epoxides; (c) a polycarboxylic acid anhydride; (d) a compound of formula I, I, III or IV or an acid adduct of a compound of formula I, II, III or IV  wherein R1 to R4 are each independently of one another hydrogen; C1-C18alkyl which is unsubstituted or substituted by one or more than one hydroxyl group amino group, halogen atom, cyano group, C1-C6alkoxy group or C1-C6cyanalkoxy group; C5-C14aryl, C6-C24aralkyl, C3-C14heteroaryl or C4-C14heteroaralkyl which are unsubstituted or substituted by one or more than one C1-C6alkyl group, C1-C6alkoxy group or halogen atom,  n is an integer from 1 to 3, and  R5 and R6 are each independently of the other C1-C6alkyl or, together with the
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: February 27, 2001
    Assignee: Vantico, Inc.
    Inventors: Martin Roth, Qian Tang, Roger Malherbe, Catherine Schoenenberger
  • Patent number: 6184411
    Abstract: The invention is directed to an improved process for the preparation of a compound of formula (I) wherein R is alkyl, n is 0 to 2, m is 1 to 4 and A is alkyl, interrupted or uninterrupted alkylene, alkanetriyl or pentaerythrityl, by transesterifying the corresponding lower alkyl with a higher alkanol of the formula A-(OH)m in the presence of a tin catalyst; wherein the improvement comprises reacting the tin catalyzed transesterification reaction mass with a carboxylic acid or hydrate thereof neat, in the absence of an aqueous medium, until the tin catalyst forms an insoluble derivative, and then separating the insoluble derivative from the reaction mass by filtration without the assistance of a filtration aid. The invention allows for a convenient method by which to remove the residual tin catalyst from the substituted hydroxyphenylcarboxylic acid ester compounds of formula (I).
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: February 6, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: John Richard Ross
  • Patent number: 6180694
    Abstract: The instant invention relates to a process for the warp-free pigmenting of polyolefins, which process comprises admixing coated pigment particles with a polyolefin, wherein said coated pigment particles are prepared by coating organic pigment particles with one or more films of a preformed polymer by adsorption thereon of from 1 to 10% by weight of the polymer, based on the pigment particles, at room temperature, the polymer being selected from the group consisting of polyvinylpyrrolidone homopolymers and copolymers.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: January 30, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Philippe Bugnon, Fritz Herren
  • Patent number: 6180693
    Abstract: Core/shell particles comprising a core comprising an elastomer having a TG value of <0° C., onto which a shell of a crosslinked copolymer is grafted, where the proportion of the crosslinking component in the copolymer of the shell is from 5 to 90% by weight, based on the total amount of the comonomers of the shell copolymer, are suitable as toughening agents for epoxy resins, with which they have good compatibility.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: January 30, 2001
    Assignee: Vantico Inc.
    Inventors: Qian Tang, Martin Roth, Dean Tallak Behm, Carl Walter Mayer, Klaus Petschel, Sameer Hosam Eldin
  • Patent number: 6180009
    Abstract: The present invention relates to a process for fractionating organic circuit board manufacture process solutions by means of at least one very fine filtration step. In the process of the present invention, the dissolved substances present in the process solutions are separated, for example by ultrafiltration, from the organic process solvent, e.g., ethyidiglycol, to permit their respective reuse. The process of the present invention advantageously provides for considerable savings in terms of costs of material and energy and also for a considerable reduction in or even complete avoidance of waste.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: January 30, 2001
    Assignee: Vantico Inc.
    Inventor: Thomas Gottwald
  • Patent number: 6177232
    Abstract: The present invention relates to a process for the production of three-dimensional articles by stereolithography using a radiation-curable composition containing a mixture of at least one cationically polymerizable compound and/or at least one free radical polymerizable compound, at least one filler material, at least one photoinitiator for cationic and/or radical polymerizations and at least one antisedimentation agent. An organic viscosity stabilizer material soluble in the base resin may optionally be brought into contact with the composition. A filler material can be introduced in the composition in an effective amount sufficient to at least delay or prevent a significant viscosity increase. The present invention also relates to cured articles resulting from said processes and a process for preparing said compositions.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: January 23, 2001
    Assignee: Vantico Inc.
    Inventors: Anastasios P. Melisaris, Thomas H. Pang
  • Patent number: 6171995
    Abstract: A composition, comprising (a) a compound of formula I (R1R2R3P)xLyM2+Z1−Z2−   (I), wherein R1, R2 and R3 are each independently of one another H, C1-C20alkyl, C1-C20-alkoxy; C4-C12cycloalkyl which is unsubstituted or substituted by C1-C6-alkyl, C1-C6haloalkyl or C1-C6alkoxy; C4-C12cycloalkoxy which is unsubstituted or substituted by C1-C6-alkyl, C1-C6haloalkyl or C1-C6alkoxy; C6-C16aryl which is unsubstituted or substituted by C1-C6alkyl, C1-C6haloalkyl or C1-C6alkoxy; C6-Cl6aryloxy which is unsubstituted or substituted by C1-C6alkyl, C1-C6haloalkyl or C1-C6alkoxy; C7-C16-aralkyloxy which is unsubstituted or substituted by C1-C6alkyl, C1-C6haloalkyl or C1-C6alkoxy; or C7-C16aralkyloxy which is unsubstituted or substituted by C1-C6alkyl, C1-C6-haloalkyl or C1-C6alkoxy; or R2 and R3 together are tetra- or pentamethylene which is unsubstituted or substituted by C1-C6alkyl, C1-C6haloalkyl or C1-C6alkoxy; tetra- or pentamethylenedioxyl which is unsubstituted or substituted by C1-C6al
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: January 9, 2001
    Assignee: Ciba Specialty Chemcials Corporation
    Inventors: Andreas M{umlaut over (u)}hlebach, Paul Adriaan Van Der Schaaf, Andreas Hafner
  • Patent number: 6169158
    Abstract: The present invention is directed to a polyglycidyl compound having on average more than two, preferably more than two and a half, particularly preferably more than three, glycidyl groups per molecule and a Tg value (determined by DSC, heating rate=20° C./min) higher than 20° C.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: January 2, 2001
    Assignee: Vantico, Inc.
    Inventors: Christoph Rickert, Hugh Stephen Laver
  • Patent number: 6165558
    Abstract: A moulding powder which is curable with the application of heat and pressure, comprising a mechanical mixture consisting of: a) a powdered epoxy compound containing on average more than one epoxy group in the molecule and having a softening point of above 60.degree. C., b) a powdered aliphatic or N-heterocyclic amine or a powdered amino group-containing adduct based on an aliphatic, cycloaliphatic, araliphatic or N-heterocyclic amine containing on average more than one amino group in the molecule and having a melting point or softening point of above 60.degree. C. and, optionally, c) customary additives for moulding powders, the particles of a) and b) being smaller than 200 .mu.m, is excellently suited for the preparation of coatings on heat-sensitive substrates and is used in particular in powder coating.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: December 26, 2000
    Assignee: Vantico, Inc.
    Inventor: Hildegard Schneider
  • Patent number: 6147026
    Abstract: A composition, comprising(a) a compound of formula I(R.sub.1 R.sub.2 R.sub.3 P).sub.x L.sub.y M.sup.2+ Z.sub.1.sup.- Z.sub.2.sup.- (I),whereinR.sub.1, R.sub.2 and R.sub.3 are each independently of one another H, C.sub.1 -C.sub.20 alkyl, C.sub.1 -C.sub.20 -alkoxy; C.sub.4 -C.sub.12 cycloalkyl which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.1 -C.sub.6 alkoxy; C.sub.4 -C.sub.12 cycloalkoxy which is unsubstituted or substituted by C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.1 -C.sub.6 alkoxy; C.sub.6 -C.sub.16 aryl which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.1 -C.sub.6 alkoxy; C.sub.6 -C.sub.16 aryloxy which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.1 -C.sub.6 alkoxy; C.sub.7 -C.sub.16 aralkyl which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl or C.sub.1 -C.sub.6 alkoxy; or C.sub.7 -C.sub.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: November 14, 2000
    Assignee: Ciba Specialty Chemcials Corporation
    Inventors: Frans Setiabudi, Dean Tallak Behm
  • Patent number: 6136922
    Abstract: A curable composition comprisingA) a mixture ofA1) at least one polymer based on acrylate and/or methacrylate monomers and containing on average 0.1 to 4.0 equivalents of free carboxyl groups per kilogram of polymer, andA2) at least one carboxyl-terminated polyester which contains on average0.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: October 24, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Isabelle Frischinger, Jacques-Alain Cotting, Jacques Fran.cedilla.ois
  • Patent number: 6136497
    Abstract: The present invention relates to stereolithographic compositions containing an actinic radiation-curable and cationically polymerizable organic substance, a cationic initiator, a radical photoinitiator, and at least one cationic reactive modifier containing at least two reactive groups per molecule or at least one polyether polyol or mixtures thereof. The cationic reactive modifier has at least one chain extension segment with a molecular weight of at least about 100 and not more than about 2,000. The polyether polyol has a molecular weight greater than or equal to about 4,000. The use of the cationically reactive modifiers and polyether polyol modifiers substantially increases the flexibility and toughness of the cured articles without compromising photospeed, accuracy and wetting-recoatability of the compositions. The present invention further relates to a method of producing a cured product, particularly three-dimensional shaped articles by treating the composition described above with actinic radiation.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: October 24, 2000
    Assignee: Vantico, Inc.
    Inventors: Anastasios P. Melisaris, Wang Renyi, Thomas H Pang
  • Patent number: 6133167
    Abstract: A method of producing a curable prepreg which comprises (i) sandwiching a multi-ply fabric layer comprising at least two superposed sheets of woven reinforcing fabric between solid films of a curable resin composition and (ii) heating the resulting sandwich under pressure so that the resin composition impregnates the sheets of woven reinforcing fabric to form a coherent curable structure.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: October 17, 2000
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: George Edward Green, John Cook
  • Patent number: 6132641
    Abstract: Soluble poly(bis-9,9'-fluorenes) comprise identical or different structural repeating units of the formula I, ##STR1## where the two R.sub.1 s are, independently of one another, H, C.sub.1-C.sub.18 alkyl, C.sub.6 -C.sub.14 aryl, C.sub.7 -C.sub.15 aralkyl, C.sub.1 -C.sub.18 alkoxy, R.sub.2 --(O--C.sub.n H.sub.2n).sub.m --O--, C.sub.1 -C.sub.18 alkylthio, C.sub.1 -C.sub.18 dialkylamino, --C(O)OH, --C(O)O-C.sub.1 -C.sub.18 alkyl, --C(O)--N(C.sub.1 -C.sub.18 alkyl).sub.2, --SO.sub.3 H, --SO.sub.3 -C.sub.1 -C.sub.18 alkyl, --SO.sub.2 --N(C.sub.1 -C.sub.18 alkyl).sub.2, C.sub.1 -C.sub.17 -alkyl-C(O)--O-- or C.sub.1 -C.sub.17 alkyl-C(O)--, R.sub.2 is H or C.sub.1 -C.sub.12 alkyl, n is from 2 to 6 and m is from 1 to 12.The polymers can be used either alone or in admixture with at least one additional fluorophore whose absorption band overlaps the emission band (fluorescent emission) of the polymer of the formula I as active radiative layer for light-emitting diodes, VDUs and display elements.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: October 17, 2000
    Assignee: Vantico, Inc.
    Inventors: Ralf-Roman Rietz, Wolfgang Wernet
  • Patent number: 6121348
    Abstract: 1. A reactive resin composition, which is a fusible, solid optionally foamable, heat curable, epoxy functional reaction prouct with a Kofler Heat Bank melting point of not less than 55.degree. C., formed by mixing together(A) epoxy resins of epoxy group containing compounds(B) an amine solidifying system present in insufficient quantities to cause gelation after all the amino hydrogen atoms are consumed by epoxy groups, under the reaction conditions chosen for (A) and (B), and which yields a product with a Kofler Heat Bank melting point of greater than 55.degree. C. and less than 120.degree. C.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: September 19, 2000
    Assignee: Ciba Specialty Chemicals Corp.
    Inventor: Peter Drummond Boys White
  • Patent number: 6117952
    Abstract: A powder coating composition comprising(A) a solid epoxy resin mixture that comprises at least one epoxy resin component (A1) and one epoxy resin component (A2) and(B) a free-carboxyl-group-containing polyester in an amount sufficient for the full cure of the composition,in which the epoxy resin component (A1) consists of one or more epoxy resins and has overall a mean epoxy functionality that is greater than 2,wherein the epoxy resin component (A2) consists of one or more advanced epoxy resins each of which has a mean epoxy functionality of at least 1.2 but less than 1.95 and is the product of a reaction in which (i) at least one diglycidyl compound is simultaneously reacted with (ii) at least one bisphenol compound and (iii) at least one monophenol as starting materials, and the difference between the mean epoxy functionality of the epoxy resin mixture (A) and the mean epoxy functionality of component (A2) of the mixture is at least 0.05 but less than 0.8.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: September 12, 2000
    Assignee: Ciba Specialty Chemicals Corp.
    Inventors: Jurgen Finter, Isabelle Frischinger, Christine Poget