Patents Represented by Attorney, Agent or Law Firm Gary A. Samuels
  • Patent number: 6951962
    Abstract: A water-dispersible oil/grease-sizing and water-sizing agent that provides oil/grease and water-sizing for paper and other cellulosic materials. The agent works effectively for both oil/grease and water sizing at high temperatures. The polymeric agent's key features include a polyamine component which is a repeating monomer unit with cellulose-reactive and fluorinated groups substituted on the polyamine.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: October 4, 2005
    Assignee: Hercules Incorporated
    Inventor: Kyle J. Bottorff
  • Patent number: 6908983
    Abstract: The present invention contemplates a process for forming polyaminoamide polymers formed by the reaction of a dibasic acid/ester with excess amounts of an amine; the intermediate polymer resulting therefrom; a process for synthesizing effective, high solids resins resulting from the reaction of intermediate polymers with an epihalohydrin; and the resultant high, solids resin. These resins may be used as wet strength resins in the papermaking industry.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: June 21, 2005
    Assignee: Hercules Corporation
    Inventor: William W. Maslanka
  • Patent number: 6808597
    Abstract: Methods for making creping adhesives and using them in the creping of cellulosic fiber webs. The creping adhesives are a combination of polyamine-epihalohydrin and poly(vinyl alcohol). The method comprises the preparation and application of the creping adhesives to attain strong adhesion of fiber webs onto a drying surface, and the creping of the fiber webs to obtain a soft, bulky tissue paper web.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: October 26, 2004
    Assignee: Hercules Incorporated
    Inventor: Anthony J. Allen
  • Patent number: 6586520
    Abstract: The present invention relates to aqueous compositions comprising component (A) which comprises at least one water-soluble component comprising at least one functional group that undergoes a crosslinking reaction, preferably upon drying and/or heating; and component (B) which comprises at least one film-forming material. In particular the composition is a coating composition comprises: (A) at least one polyamidoamine-epihalohydrin resin; and (B) at least one material selected from flexibilizing materials, crosslink inhibiters and combinations thereof in an amount sufficient to impart a cuttability value of less than about 15 to a substrate coated with the coating composition. Component (B) is preferably at least one polymer comprising repeating units derived from an alkyl halide having at least one double bond and an alkene, such as ethylene vinyl chloride.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: July 1, 2003
    Assignee: Hercules Incorporated
    Inventors: James Canorro, Robert A. Gelman, Matthew B. Howle, Andrea Keys, JoAnne Lefever, William W. Maslanka, Jeffrey I. Melzer, Kevin M. Mottern, Michael T. Raab, William Rodriquez, Richard A. Stuhrke, Jennifer E. Steed, Robert G. Szewczyk
  • Patent number: 6558513
    Abstract: Disclosed is a method of improving the release of paper webs from the surface of press rolls or other paper making or converting equipment by applying to such a surface non-aqueous, non-curing hydrocarbon polymer compositions. The non-curing hydrocarbon polymers have the formula (CH3)3C—[—C(R1)(R2)—C(R3)(R4)—]n—C(R5)═C(CH3)2 (I) wherein R1 through R5 are hydrogen or —CH3, with at least one of R1 through R4 being —CH3, and n is such that the number average molecular weight of such hydrocarbon polymers is from 50 to 3000. They may be hydrogenated. Preferred non-curing hydrocarbon polymers are polybutenes of the formula (CH3)3C—[—CH2—C(CH3)2—]n—CH═C(CH3)2 (II). Preferred compositions comprise at least one such hydrocarbon polymer component having a number average molecular weight from 400 to 700 and a second such component having a number average molecular weight of 100 to 400.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: May 6, 2003
    Assignee: Hercules Incorporated
    Inventors: Jacqueline K. Pease, William A. Hendriks
  • Patent number: 6554961
    Abstract: Processes for rendering a polyamine-epihalohydrin resin storage stable, including processes that prepare a storage stable resin and/or processes that treat resins. A composition containing a polyamine-epihalohydrin resin which includes CPD-forming species can be treated with at least one agent under conditions to at least one of inhibit, reduce and remove the CPD-forming species to obtain a reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 2 weeks at 50° C., and a pH of about 2.5 to 3.5 contains less than about 250 ppm dry basis of CPD. The invention is also directed to a gelation storage stable reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin, when stored at pH 1 for 24 hours at 50° C. and measured at 24 hours, produces less than about 1000 ppm dry basis of CPD.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 29, 2003
    Assignee: Hercules Incorporated
    Inventors: Richard James Riehle, Anthony J. Allen, Michaela Hofbauer, Alfred Jacques Haandrikman, Ronald Busink, Mark T. Crisp, John James Hoglen, Huai Nan Cheng, Francis J. Carlin, Jr., John Arthur Lapre, Harold Jabloner
  • Patent number: 6517682
    Abstract: Method of inhibiting the deposit of sticky material on a papermill felt used in processing pulp slurry into sheets, comprising applying to the papermill felt at least one cationic polymer and at least one nonionic surfactant having an HLB of about 11 to 14.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: February 11, 2003
    Assignee: Hercules Incorporated
    Inventors: William A. Hendriks, Jeffrey R. Cowart
  • Patent number: 6461477
    Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. A combination of a protein and a cationic polymer is added to the pulp or applied to deposition prone surfaces of a papermaking system.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: October 8, 2002
    Assignee: Hercules Incorporated
    Inventors: Duy T. Nguyen, Qu-Ming Gu
  • Patent number: 6379501
    Abstract: Processes for preparing cellulose products, such as paper products which include substantially simultaneously or sequentially adding at least one aluminum compound and at least one silicate to a cellulose slurry, to a cellulose slurry such as a paper slurry. In particular, the present invention is directed to processes for preparing the cellulose products, such as paper products which include substantially simultaneously or sequentially adding at least one aluminum compound and at least one monovalent silicate or water-soluble metal silicate complex to a cellulose slurry, such as a paper slurry. Compositions containing at least one aluminum compound and at least one water-soluble metal silicate, and cellulose products, such as paper products containing at least one water-soluble metal silicate complex.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: April 30, 2002
    Assignee: Hercules Incorporated
    Inventors: Fushan Zhang, Jimei Tong
  • Patent number: 6316095
    Abstract: Fine paper that is sized with a 2-oxetanone alkaline sizing agent and that does not encounter machine feed problems in high speed converting or reprographic machines, including continuous forms bond paper and adding machine paper, processes for converting the paper into envelopes, continuous forms bond paper and adding machine paper, and paper products of the processes.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: November 13, 2001
    Assignee: Hercules Incorporated
    Inventors: Donald K. Black, Kyle J. Bottorff, Clement Linus Brungardt, David Howard Dumas, Susan Merrick Ehrhardt, John Charles Gast, Jian-Jian Zhang
  • Patent number: 6294645
    Abstract: The invention relates to resin systems useful for imparting dry-strength to paper without substantially increasing the paper's wet-strength wherein the resin system comprises a cationic component and an anionic component. The invention also relates to the process for incorporating these resin systems into paper and the paper produced containing the resin systems.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: September 25, 2001
    Assignee: Hercules Incorporated
    Inventors: Anthony J. Allen, Elliott Echt, William W. Maslanka, Jeffrey C. Peters
  • Patent number: 6294584
    Abstract: The present invention provides for methods for fumigating soil containing deleterious organisms such as nematodes. The methods utilize an effective amount of acrolein over sole demand for acrolein which when added to the soil will control the organisms but will not exhibit phytotoxicity towards the existing or future plant life.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: September 25, 2001
    Assignee: Betzdearborn Inc.
    Inventors: Edmund J. Bockowski, Dwight P. Davis
  • Patent number: 6273998
    Abstract: A drainage/retention aid comprising a combination of a) microparticles; and b) a vinylamine copolymer having the general structure: wherein m is from 1-99 mol %, n is from 0 to 50 mol % and o is from 1 to 99 mol %; A is selected from the group consisting of one or more repeating units having the following general structures: and salts thereof wherein p, q and r are mol percentages from 1 to 99, each R1 is independently H or CH3, and X is —CN, —COOR2, —CONR3R4, —OR5, —OCOR6, and mixtures thereof; wherein R2, R3, R4, R5, R6 are independently selected from H or C1 to C4 alkyl; and wherein the vinylamine copolymer has a charge density in a range of from 2 to 24 mEq/g.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: August 14, 2001
    Assignee: Betzdearborn Inc.
    Inventors: Lawrence Lu Kuo, Roger Yiming Leung, Steven R. Prescott, Thord Hassler
  • Patent number: 6273997
    Abstract: Discloses is a method for sizing paper at a pH of about 5.0 to about 8.5 by incorporating a sizing composition consisting essentially of (a) rosin, (b) at least one hydrocarbon resin, (c) a cationic component consisting essentially of a cationic polyamine resin at a weight ration of the rosin/hydrocarbon resin blend to cationic polyamine of about 5:1 to about 1:2, and (d) up to 0.3% alum. The cationic polyamine resin is selected from the group consisting of polyalkyleneamine-epihalohydrin resins, polyalkyleneamine-dicyandiamide-epihalohydrin resins, poly(diallylamine•HCl)-epihalohydrin resins, poly(methyldiallylamine•HCl)-epihalohydrin resins, epihalohydrin-modified polyethyleneimine resins, amine-modified poly(methyldiallylamine•HCl)-epihalohydrin resins, and mixtures thereof.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: August 14, 2001
    Assignee: Hercules Incorporated
    Inventors: Susan M. Ehrhardt, D. Bruce Evans
  • Patent number: 6245861
    Abstract: High vinyl styrene-butadiene rubber is cured through the use of organic peroxides. The organic peroxide may be used singly or in combination with sulfur curing ingredients to cure the high vinyl styrene-butadiene rubber wherein the organic peroxide to sulfur curing ingredient is at a molar ratio of from about 3:1 to about 1:3.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: June 12, 2001
    Assignee: Hercules Incorporated
    Inventor: Jay Bernard Class
  • Patent number: 6197919
    Abstract: This invention relates to resins useful for imparting dry-strength and temporary wet-strength to paper, the process of incorporating these resins into paper and the paper produced containing the resins. The resin comprises an amphoteric polymer produced through polymerization of an anionic monomer, a monomer containing aldehyde functionality and a cationic monomer.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: March 6, 2001
    Assignee: Hercules Incorporated
    Inventors: Mark T. Crisp, Richard J. Riehle
  • Patent number: 6197417
    Abstract: A 2-oxetanone sizing agent that is made from fatty acid(s) containing linoleic acid. Paper that is sized with the 2-oxetanone alkaline sizing agent does not encounter machine feed problems in high speed converting or reprographic machines, so the sizing agent is useful for paper including continuous forms bond paper and adding machine paper, processes for converting the paper into envelopes, continuous forms bond paper and adding machine paper.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: March 6, 2001
    Assignee: Hercules Incorporated
    Inventor: Kyle J. Bottorff
  • Patent number: 6175022
    Abstract: Nucelophilic group, such as alcohol, terminated 2-oxetanone multimers, process of making same by reacting e.g. alcohol and dicarboxylic acid chloride in the presence of triethylamine, and their use for sizing paper.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: January 16, 2001
    Assignee: Hercules Incorporated
    Inventors: Clement L. Brungardt, Richard J. Riehle, Ian Vallance, Jian Jian Zhang
  • Patent number: 6162328
    Abstract: There is disclosed a method for sizing paper by adding to the surface of the paper a sizing composition comprising cellulose reactive and cellulose non-reactive size. The sized paper performs better in ink jet printing than does paper that is the same except that the size composition contains only cellulose reactive size or only cellulose non-reactive size, when the printing is evaluated for at least one property selected from the group consisting of optical density, feathering, wicking, edge roughness and bleed. The sized paper also has higher toner adhesion, a higher coefficient of friction and a lower coefficient of friction bandwidth than does paper that is the same except that the size composition contains only cellulose reactive size. The paper is also capable of performing effectively in tests that measure its convertibility on state-of-the-art converting equipment and its performance on high speed end-use machinery.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: December 19, 2000
    Assignee: Hercules Incorporated
    Inventors: Marco Franco Cenisio, Edwin Rene Hensema, Andrew Mears, Daniel Felix Varnell
  • Patent number: 6128785
    Abstract: A waterproof glove with a shaft incorporating a hand insertion opening and a shaft edge located at the hand insertion opening side and consisting of a shell material. A waterproof cuff sleeve with a lower cuff edge is arranged inside of the shaft such that it lies below the shaft edge by a predetermined underlength and is connected with the shaft edge and with an upper cuff edge that projects over the shaft edge by a predetermined overlength. A sleeve accomodation groove is formed between the shaft and the sleeve cuff so that a lower end area of a wearer's garment sleeve can be inserted into the sleeve accomodation groove. A groove base formed in the lower cuff edge is sealed so that water from the sleeve accomodation groove cannot reach the interior of the glove. The overlength of the cuff sleeve is dimensioned such that when the wearer holds the hand in such a position that water can accumulate in the sleeve groove, water from the sleeve groove cannot reach the upper edge of the cuff.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: October 10, 2000
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Reinhard Sommeregger