Patents by Inventor Werner A. Lidy

Werner A. Lidy 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: 6613827
    Abstract: The present invention provides a process for preparing a stable dispersion of a preformed polymer in a polyol in a single mixer. A preformed polymer is mixed under sufficient heat and shear to reduce its particle size to a desired size in the presence of a polyol. The present invention also provides stable dispersions of polymers in polyols and polyurethane formulations containing stable dispersions made by the process of the present invention.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: September 2, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Richard A. Lundgard, James E. Pate, III, James J. Jakubowski, Robert A. Kirchhoff, Ralph D. Priester, Jr., Werner A. Lidy
  • Publication number: 20020042463
    Abstract: The present invention provides a process for preparing a stable dispersion of a preformed polymer in a polyol in a single mixer. A preformed polymer is mixed under sufficient heat and shear to reduce its particle size to a desired size in the presence of a polyol. The present invention also provides stable dispersions of polymers in polyols and polyurethane formulations containing stable dispersions made by the process of the present invention.
    Type: Application
    Filed: September 10, 2001
    Publication date: April 11, 2002
    Inventors: Richard A. Lundgard, James E. Pate, James J. Jakubowski, Robert A. Kirchhoff, Ralph D. Priester, Werner A. Lidy
  • Patent number: 5360831
    Abstract: The present invention concerns a process for the preparation of foam-in-fabric articles useful in furniture and automotive applications such as car seats, arm seats and head rests. According to the present invention a flexible or semi-flexible foam formulation is frothed with a non-reactive gas when poured onto a foam hacking of a composite cover, and allowed to rise and cure.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: November 1, 1994
    Assignee: Polyol International B.V.
    Inventors: Werner A. Lidy, Gerard Gatouillat, Francois M. Casati
  • Patent number: 5286759
    Abstract: Polyisocyanate-based foams having a uniformly fine cell size are prepared by reacting a polyisocyanate with an isocyanate-reactive compound in the presence of a blowing agent mixture comprising a hydrocarbon component which has four or more carbon atoms and a polyfluorocarbon component which has a boiling point of from about 283 K. to about 393 K. at 760 mm Hg and wherein the boiling point:molecular weight ratio of said polyfluorocarbon component is less than or equal to 1.7. The hydrocarbon component is present in from about 5 to about 95 mole percent and the polyfluorocarbon in from about 95 to about 5 mole percent based on total amounts of hydrocarbon and polyfluorocarbon.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: February 15, 1994
    Assignee: The Dow Chemical Company
    Inventors: Guido F. Smits, Henri J. M. Grunbauer, Johan A. Thoen, Werner A. Lidy
  • Patent number: 5273695
    Abstract: A multihardness foamed seat having side rolls including one or more zones of a second polyurethane foam encapsulated in a first polyurethane foam is prepared by arranging the seat mould (10) so that the side roll well (12) is inclined in a direction parallel to its length, introducing a liquid first foam formulation into the side roll well, and then introducing a liquid second foam formulation within a time interval corresponding to between 0.01t to 1.5t where t is the cream time of the first foam formulation. The process is particularly useful for the preparation of automobile seats having side rolls.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: December 28, 1993
    Assignee: The Dow Chemical Company
    Inventors: Michael J. Brown, Werner A. Lidy
  • Patent number: 5155142
    Abstract: A process for preparing polyurea or polyurethane/urea foams from a polyamine or aminated polyether polyol is provided. The process comprises reacting the above component with a polyisocyanate (e.g. TDI, MDI etc.), a blowing agent (e.g. water) and a carboxylic acid or carboxylate acid salt. The function of the carboxylic acid or carboxylic acid salt is to slow down the reaction between the amine and the isocyanate so that effective foaming can take place before the reaction is completed.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: October 13, 1992
    Assignee: BP Chemicals Limited
    Inventor: Werner A. Lidy
  • Patent number: 5153233
    Abstract: A storage stable or easily redispersible dispersion of melamine, urea or a blend thereof in a polyol, polymer polyol or a blend thereof is produced by the addition of an alkylbenzenesulfonate salt to the dispersion. Foams, polyurethane foams and other polyurethane materials made from storage stable or easily redispersible dispersion of the present invention show improved combustion resistance properties.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: October 6, 1992
    Inventors: Jose Godoy, Jitka Jenc, Werner A. Lidy
  • Patent number: 5118721
    Abstract: A process for preparing a dispersion of a filler e.g., melamine, urea or borax in a dispersion or graft polymer polyol is provided. The process comprises (1) dispersing the filler in a suitable basestock (e.g., a polyether polyol) and (2) thereafter using this as the basestock for preparing the dispersion or graft polymer polyol.The polymer which is prepared in dispersed form in the second step may be for example (1) the reaction product of a polyamine, hydrazine or hydrazide and an isocyanate (PHD polymer) or (2) the reaction product of an olamine and an isocyanate (PIPA polymer). Alternatively styrene and acrylonitrile can be graft polymerised in the basestock in step (2). The new dispersion or graft polymer polyols containing dispersed filler are useful in the manufacture of fire resistant polyurethane foam for e.g., furniture applications.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: June 2, 1992
    Assignee: Polyol International, B.V.
    Inventors: Jose Godoy, Jitka Jenc, Werner A. Lidy
  • Patent number: 5114989
    Abstract: This invention relates to an isocyanate-terminated prepolymer prepared from a polyisocyanate comprising 4,4'-methylene diphenyldiisocyanate and polyoxyalkylene polyol wherein the polyol has an average functionality of from about 2 to about 4, a hydroxyl equivalent weight of from about 2200 to 3500 and containing oxyethylene residues in from about 40 to about 68 percent by weight; and the use thereof in the manufacturing of flexible polyurethane foam.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: May 19, 1992
    Assignee: The Dow Chemical Company
    Inventors: Richard J. Elwell, Robert A. Sewell, Werner A. Lidy, Johan A. Thoen
  • Patent number: 4965029
    Abstract: A process for preparing a polyurethane foamed article including a hard foam encapsulated by a soft foam is provided. The process provides improved encapsulation over that described in EP 68820 by frothing the hard foam formulation, with for example carbon dioxide, before it is introduced onto the rising soft foam formulation. The hard foam formulation is frothed so that is density is between 75% and 145% of the soft foam formulation.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: October 23, 1990
    Assignee: Polyol International BV
    Inventors: Werner A. Lidy, Rudolf J. Tenhagen
  • Patent number: 4912260
    Abstract: Amines are produced by reacting at elevated temperature a first reactant which is either an alcohol, an aldehyde or a ketone with a second reactant which is either ammonia, a primary or secondary amine or a nitrile in the presence as catalyst of a composition comprising (i) nickel, (ii) ruthenium, and (iii) at least one other transition metal selected from either the second or third row transition metals, for example palladium, rhenium or iridium.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: March 27, 1990
    Assignee: BP Chemicals Limited
    Inventors: Ian D. Dobson, Werner A. Lidy, Peter S. Williams
  • Patent number: 4883832
    Abstract: Fluid polymer/polyol dispersions are prepared from novel polyether polyols.
    Type: Grant
    Filed: June 24, 1987
    Date of Patent: November 28, 1989
    Assignee: BP Chemicals Limited
    Inventors: Rudolpha C. Cloetens, Werner A. Lidy, Huy P. Thanh
  • Patent number: 4871783
    Abstract: Modified polyols having the formula R.sub.m SiXx.sub.4-m wherein m=1 to 3, X is an alkoxy group and at least one R group is either HS--R.sup.1 -- or HS--(SiR.sup.2.sub.2 O).sub.n -- are described. The modified polyols, when mixed with base polyol, are used in the manufacture of graft polymer polyols having low viscosity and good filtrability. The graft polymer polyol can be used in the manufacture of polyurethane foam.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: October 3, 1989
    Assignee: BP Chemicals Limited
    Inventors: Rudolphe C. Cloetens, Werner A. Lidy, Brian D. Phillips, David B. Thomas
  • Patent number: 4843106
    Abstract: Fluid polymer polyol dispersions which impart improved fire resistance to polyurethane foam. The fluid polymer polyol dispersions are prepared by grafting one or more monomers onto a polyol backbone with the difference that the grafting takes place in the presence of a flame retardant. During the grafting process the flame retardant is incorporated into the fluid polymer polyol dispersion. When such fluid polymer polyol dispersions are used, the fire resistance of the final polyurethane foam is improved relative to cases where a conventional fluid polymer polyol dispersion and a flame retardant are added separately to the polyurethane foam formulation.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: June 27, 1989
    Assignee: BP Chemicals Limited
    Inventors: Joelle Y. Fis, Werner A. Lidy, Brian D. Phillips, David B. Thomas
  • Patent number: 4831076
    Abstract: A modified polyol, suitable for use as a non-aqueous dispersant in the preparation of polymer/polyols containing high levels of polymer, is provided. The modified polyol comprises the product obtained by reaction of a polyol with a coupling agent having at least two functional groups which are reactable with hydroxyl groups on the polyol. Suitable coupling agents include silicon compounds having two such functional groups, organic compounds having two or more alkoxy groups, saturated dicarboxylic acid derivatives, alkyl or aryl esters of carbonic acid, alkyl or aryl sulphonates, boric acid or its esters and titanates.
    Type: Grant
    Filed: April 24, 1985
    Date of Patent: May 16, 1989
    Assignee: BP Chemicals Limited
    Inventors: Werner A. Lidy, Huy P. Thanh
  • Patent number: 4785027
    Abstract: A flexible polyurethane foam formulation which is non-reactive at or near ambient temperatures is provided. The formulation comprises a polyisocyanate, a polyfunctional active hydrogen containing compound, an amine catalyst, a blowing agent and a polyether acid. The formulation which becomes reactive above 40.degree. C. has the advantage, over similar systems based on formic acid, that the polyurethane foam is not tight and does not suffer from skin peeling.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: November 15, 1988
    Assignee: BP Chemicals Limited
    Inventors: Robert D. Brasington, Werner A. Lidy
  • Patent number: 4764541
    Abstract: A flexible polyurethane foam formulation which is non-reactive at or near ambient temperature is provided. The formulation comprises a polyisocyanate, a polyfunctional active hydrogen containing compound, an amine catalyst, a blowing agent and a polyether acid. The formulation which becomes reactive above 40.degree. C. has the advantage, over similar systems based on formic acid, that the polyurethane foam is not tight and does not suffer from skin peeling.
    Type: Grant
    Filed: January 21, 1988
    Date of Patent: August 16, 1988
    Assignee: BP Chemicals Limited
    Inventors: Robert D. Brasington, Werner A. Lidy
  • Patent number: 4723026
    Abstract: A novel family of modified polyols suitable for use in the preparation of fluid polymer/polyols. The modified polyols are the reaction product obtained by reacting a silicon atom containing compound with an unmodified polyol, the silicon atom compound being one which has (a) at least olefinically unsatured hydrocarbyl group and (b) at least one functional group which is reactable with the hydroxy groups on the polyol. Examples of such silicon atom containing compounds include vinyltriethoxysilane and vinyltrimethoxysilane. Modified polyols of the type described are particularly useful in the preparation of polymer/polyols containing high levels of polymer since they reduce the viscosity of the final polymer/polyol and decrease the tendency of the polymer/polyol to produce polymer sediment.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: February 2, 1988
    Assignee: BP Chemicals Limited
    Inventors: Rudolphe C. Cloetens, Werner A. Lidy, Huy P. Thanh
  • Patent number: 4596653
    Abstract: Emulsions of oil and water are broken by treating them with a demulsifier which is a polysiloxane polyalkylene oxide copolymer in which the polyalkylene oxide segment is composed of random ethylene oxide and propylene oxide units.The demulsifier is particularly useful in breaking emulsions of water in crude oil which are normally difficult to separate and in breaking emulsions at relatively low temperatures, e.g. 30.degree. to 45.degree. C.
    Type: Grant
    Filed: October 17, 1984
    Date of Patent: June 24, 1986
    Assignee: The British Petroleum Company p.l.c.
    Inventors: David E. Graham, Werner A. Lidy, Patrick C. McGrath, David G. Thompson
  • Patent number: 4571413
    Abstract: A curable phenolic resin composition comprising (A) a major proportion of an aqueous phenolic resole resin and (B) a minor proportion of a poly(1,2-alkylene oxide) having terminating groups selected from the group comprising --NH.sub.2, --CONH.sub.2, --CH.CO.NH.sub.2 and --OCONH.sub.2 groups. The compositions are preferably cured with an acid catalyst and post cured at an elevated temperature.
    Type: Grant
    Filed: February 12, 1985
    Date of Patent: February 18, 1986
    Assignee: The British Petroleum Company p.l.c.
    Inventors: John G. Dolden, Sidney G. Fogg, Werner A. Lidy