Patents by Inventor Christian Leonard Daniels
Christian Leonard Daniels 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).
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Patent number: 10094068Abstract: The invention provides a polymer dispersion for paper coating compositions, obtainable by means of a radically initiated, aqueous emulsion polymerization in the presence of one or more emulsifiers and optionally protective colloids, of a) 50 to 93% by weight of at least one vinyl ester of an alkanoic acid with 1 to 12 C-atoms, whose homopolymer has a glass transition temperature Tg of below about 350° K, b) 2 to 30% by weight of ethylene, c) 5 to 20% by weight of at least one monomer whose homopolymer has a glass transition temperature Tg of at least about 350° K, d) 0.1 to 2% by weight of ethylenically unsaturated silane monomers, e) 0 to 5% by weight of further ethylenically unsaturated monomers that are copolymerizable with vinyl acetate and ethylene, based in each case on the total weight of the monomers used for the polymerization, with the data in % by weight summing in each case to 100% by weight.Type: GrantFiled: March 27, 2015Date of Patent: October 9, 2018Assignee: Wacker Chemical CorporationInventors: Christian Leonard Daniels, John Richard Boylan, Ronald Bernal Jones
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Publication number: 20170175335Abstract: The invention provides a polymer dispersion for paper coating compositions, obtainable by means of a radically initiated, aqueous emulsion polymerization in the presence of one or more emulsifiers and optionally protective colloids, of a) 50 to 93% by weight of at least one vinyl ester of an alkanoic acid with 1 to 12 C-atoms, whose homopolymer has a glass transition temperature Tg of below about 350° K., b) 2 to 30% by weight of ethylene, c) 5 to 20% by weight of at least one monomer whose homopolymer has a glass transition temperature Tg of at least about 350° K., d) 0.1 to 2% by weight of ethylenically unsaturated silane monomers, e) 0 to 5% by weight of further ethylenically unsaturated monomers that are copolymerizable with vinyl acetate and ethylene, based in each case on the total weight of the monomers used for the polymerization, with the data in % by weight summing in each case to 100% by weight.Type: ApplicationFiled: March 27, 2015Publication date: June 22, 2017Applicant: WACKER CHEMICAL CORPORATIONInventors: CHRISTIAN LEONARD DANIELS, JOHN RICHARD BOYLAN, RONALD BERNAL JONES
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Patent number: 9156920Abstract: A process for preparing an aqueous emulsifier-stabilized vinyl acetate-ethylene copolymer dispersion with weight average particle size in a range from 100 nm to 300 nm includes emulsion polymerization of a reaction mixture including: a) vinyl acetate and ethylene, b) 0.05 to 1% by weight, based on the total weight of monomers and comonomers, of at least one functional comonomer selected from the group consisting of ethylenically unsaturated monomers with at least one phosphate group or phosphonic acid group or their salts and ethylenically unsaturated sulphonic acids or their salts, c) 0.5 to 5% by weight, based on the total weight of monomers and comonomers, of at least one anionic emulsifier and optionally one or more nonionic emulsifiers, and d) optionally at most 0.5%, based on the total weight of monomers and comonomers, of a protective colloid. The process reactor uses an external heat exchange circuit.Type: GrantFiled: September 26, 2012Date of Patent: October 13, 2015Assignee: WACKER CHEMICAL CORPORATIONInventor: Christian Leonard Daniels
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Publication number: 20140088249Abstract: A process for preparing an aqueous emulsifier-stabilized vinyl acetate-ethylene copolymer dispersion with weight average particle size in a range from 100 nm to 300 nm includes emulsion polymerization of a reaction mixture including: a) vinyl acetate and ethylene, b) 0.05 to 1% by weight, based on the total weight of monomers and comonomers, of at least one functional comonomer selected from the group consisting of ethylenically unsaturated monomers with at least one phosphate group or phosphonic acid group or their salts and ethylenically unsaturated sulphonic acids or their salts, c) 0.5 to 5% by weight, based on the total weight of monomers and comonomers, of at least one anionic emulsifier and optionally one or more nonionic emulsifiers, and d) optionally at most 0.5%, based on the total weight of monomers and comonomers, of a protective colloid. The process reactor uses an external heat exchange circuit.Type: ApplicationFiled: September 26, 2012Publication date: March 27, 2014Applicant: Wacker Chemical CorporationInventor: Christian Leonard Daniels
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Patent number: 8273414Abstract: A method of improving the wet tensile strength of a cellulose-containing web includes applying to the web an aqueous binder emulsion and subsequently drying and curing the binder emulsion. The aqueous binder emulsion is prepared by emulsion-polymerizing a monomer mixture comprising vinyl acetate, ethylene, and an olefinically unsaturated crosslinking monomer in the presence of a phosphate ester surfactant wherein the at least one crosslinking monomer comprises a (meth)acrylamide moiety and a cellulose-reactive moiety. The binder emulsion may be applied to a cellulose-containing web to increase wet strength, aid in creping, or both.Type: GrantFiled: March 5, 2010Date of Patent: September 25, 2012Assignee: Wacker Chemical CorporationInventors: Christian Leonard Daniels, Ronald Joseph Pangrazi, Richard Henry Bott
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Publication number: 20120234490Abstract: A pigmented latex composition having a solids content in a range from 60 wt % to 95 wt % includes a) an aqueous dispersion of a polymeric binder that is a copolymer including units of vinyl acetate, ethylene and at least one ethylenically unsaturated carboxylic acid or salt thereof, the polymeric binder constituting in a range from 10 wt % to 30 wt % of the composition; wherein vinyl acetate units constitute in a range of 70-95 wt % of the polymeric binder, ethylene units constitute in a range of 5-30 wt % of the polymeric binder and ethylenically unsaturated carboxylic acid units constitute in a range from 0.75 wt % to 5 wt % of the polymeric binder; the aqueous dispersion of the polymeric binder is free of alkylphenol ethoxylate surfactants and phosphate ester surfactants; and the polymeric binder has a weight average particle size in a range from 0.1 ?m to 0.Type: ApplicationFiled: March 18, 2011Publication date: September 20, 2012Applicant: Wacker Chemical CorporationInventors: Christian Leonard Daniels, Bruce Gruber
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Publication number: 20120214007Abstract: A composition for coating paper includes at least one pigment selected from the group consisting of polymeric pigments, aluminosilicates, calcium carbonate, titanium dioxide, talc, barium sulfate, zinc oxide, aluminum trihydrate, amorphous silica and silicates; wherein the pigment is dispersed in an aqueous dispersion of a polymeric binder that is a copolymer of vinyl acetate, ethylene, at least one ethylenically unsaturated sulfonic acid or salt thereof and optionally one or more other monomers, wherein vinyl acetate units constitute in a range of 70-90 wt % of the polymeric binder and ethylene units constitute in a range of 10-30 wt % of the polymeric binder; and wherein the polymeric binder has a mean particle size in a range from 0.1 ?m to 0.Type: ApplicationFiled: February 18, 2011Publication date: August 23, 2012Applicant: Wacker Chemical CorporationInventors: Christian Leonard Daniels, John Richard Boylan
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Publication number: 20100227072Abstract: A method of improving the wet tensile strength of a cellulose-containing web includes applying to the web an aqueous binder emulsion and subsequently drying and curing the binder emulsion. The aqueous binder emulsion is prepared by emulsion-polymerizing a monomer mixture comprising vinyl acetate, ethylene, and an olefinically unsaturated crosslinking monomer in the presence of a phosphate ester surfactant wherein the at least one crosslinking monomer comprises a (meth)acrylamide moiety and a cellulose-reactive moiety. The binder emulsion may be applied to a cellulose-containing web to increase wet strength, aid in creping, or both.Type: ApplicationFiled: March 5, 2010Publication date: September 9, 2010Applicant: Wacker Chemical CorporationInventors: Christian Leonard Daniels, Ronald Joseph Pangrazi, Richard Henry Bott
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Patent number: 7427444Abstract: A cellulosic product such as paper coating composition is disclosed comprising aqueous-based semi-crystalline vinyl acetate-ethylene polymer emulsions, containing crystalline ethylene segments, which are useful for imparting oil, grease, solvent, water, and moisture vapor resistance. The polymer emulsions are prepared via the direct aqueous-based free radical emulsion polymerization of ethylene with various other comonomers. The semi-crystalline aqueous-based polymer emulsions of this invention have a crystalline melting point and a crystalline heat of fusion ranging from 5 to 100 J/g. The semi-crystalline aqueous-based emulsion polymers of this invention can be used directly as a paper or paperboard coating for imparting oil, grease, solvent, water, and moisture vapor resistance. Further, the present invention provides a repulpable paper and paperboard.Type: GrantFiled: July 16, 2003Date of Patent: September 23, 2008Inventors: John Joseph Rabasco, Ronald Bernal Jones, Christian Leonard Daniels, Richard Henry Bott, John Joseph Halat
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Patent number: 7238149Abstract: This invention relates to an improvement in a process for forming a carton from paperboard stock comprising the steps: applying an aqueous based adhesive to select parts of a paperboard carton blank obtained from a paperboard feedstock; drying the aqueous based adhesive; folding the select parts of the adhesive coated carton blank onto cooperating parts of the paperboard blank; and, heat sealing the select and cooperating parts thereby forming the carton; wherein the aqueous based adhesive is comprised of a vinyl acetate/ethylene polymer formed by emulsion polymerization and having (a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 90° C.; measured at a heat rate of 20° C./minute and, (b) a tensile storage modulus of at least 1×104 dynes/cm2 at 115° C. measured at 6.28 rad/sec.Type: GrantFiled: January 5, 2005Date of Patent: July 3, 2007Assignee: Air Products Polymers, L.P.Inventors: Randolph John Lorenz, Christian Leonard Daniels, John Joseph Rabasco
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Patent number: 7189461Abstract: This invention is directed to aqueous-based ethylene-vinyl acetate (EVA) polymer emulsions suited for use in heat seal applications. The EVA polymers of this invention are produced by a relatively low-pressure process, i.e., less than 2000 psig, preferably from about 1000 to about 2000 psig. The aqueous-based EVA based polymer emulsions contain crystalline segments resulting from ethylene linkages and are prepared by emulsion polymerizing ethylene and vinyl acetate, preferably with a carboxylic monomer, in the presence of a stabilizing system containing surfactant or a cellulosic protective colloid in combination with surfactant.Type: GrantFiled: March 4, 2003Date of Patent: March 13, 2007Assignee: Air Products Polymers, L.P.Inventors: John Joseph Rabasco, Christian Leonard Daniels, David William Horwat, Menas Spyros Vratsanos, Richard Henry Bott
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Patent number: 7064091Abstract: This invention is directed to an aqueous polymeric binder composition that is useful in improving the wet strength of pre-moistened wipes. The binder composition comprises a blend or mixture of two components. One component is a water dispersible polymer capable of binding together the fibers composing a nonwoven web. The other component is an aqueous solution or dispersion of a polymer comprised predominantly of self-crosslinking monomer(s).Type: GrantFiled: January 29, 2003Date of Patent: June 20, 2006Assignee: Air Products Polymers, L.P.Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi, Nicola Ranieri, Christian Leonard Daniels
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Publication number: 20040175589Abstract: This invention is directed to aqueous-based ethylene-vinyl acetate (EVA) polymer emulsions suited for use in heat seal applications. The EVA polymers of this invention are produced by a relatively low-pressure process, i.e., less than 2000 psig, preferably from about 1000 to about 2000 psig. The aqueous-based EVA based polymer emulsions contain crystalline segments resulting from ethylene linkages and are prepared by emulsion polymerizing ethylene and vinyl acetate, preferably with a carboxylic monomer, in the presence of a stabilizing system containing surfactant or a cellulosic protective colloid in combination with surfactant.Type: ApplicationFiled: March 4, 2003Publication date: September 9, 2004Inventors: John Joseph Rabasco, Christian Leonard Daniels, David William Horwat, Menas Spyros Vratsanos, Richard Henry Bott
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Patent number: 6787594Abstract: The invention is the use of a glycolic acid adduct of sodium sulfite as the reducing agent in the redox couple for polymerization of vinyl acetate polymer based emulsions for nonwoven binders which contain formaldehyde, primarily from the self-crosslinking co-monomer N-methylolacrylamide.Type: GrantFiled: October 30, 2000Date of Patent: September 7, 2004Assignee: Air Products Polymers, L.P.Inventors: Joel Erwin Goldstein, Christian Leonard Daniels, Chung-Ling Mao
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Publication number: 20040147190Abstract: This invention is directed to an aqueous polymeric binder composition that is useful in improving the wet strength of pre-moistened wipes. The binder composition comprises a blend or mixture of two components. One component is a water dispersible polymer capable of binding together the fibers composing a nonwoven web. The other component is an aqueous solution or dispersion of a polymer comprised predominantly of self-crosslinking monomer(s).Type: ApplicationFiled: January 29, 2003Publication date: July 29, 2004Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi, Nicola Ranieri, Christian Leonard Daniels
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Patent number: 6649691Abstract: The reaction of unsaturated carbonates such as vinyl ethylene carbonate with N-aminoethylimidazolidone (TAM) under mild conditions generates a mixture of two vinyl and hydroxy functional imidazolidone carbamates which polymerize readily into acrylate or vinyl acetate based emulsion polymers. The polymers show enhanced wet adhesion (wet scrubbability) in latex paints and coatings.Type: GrantFiled: December 12, 2002Date of Patent: November 18, 2003Assignee: Air Products Polymers, L.P.Inventors: Robert Krantz Pinschmidt, Jr., Khalil Yacoub, Christian Leonard Daniels, Kien Van Phung
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Publication number: 20030119982Abstract: The reaction of unsaturated carbonates such as vinyl ethylene carbonate with N-aminoethylimidazolidone (TAM) under mild conditions generates a mixture of two vinyl and hydroxy functional imidazolidone carbamates which polymerize readily into acrylate or vinyl acetate based emulsion polymers. The polymers show enhanced wet adhesion (wet scrubbability) in latex paints and coatings.Type: ApplicationFiled: December 12, 2002Publication date: June 26, 2003Inventors: Robert Krantz Pinschmidt, Khalil Yacoub, Christian Leonard Daniels, Kien Van Phung
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Patent number: 6538143Abstract: The reaction of unsaturated carbonates such as vinyl ethylene carbonate with N-aminoethylimidazolidone (TAM) under mild conditions generates a mixture of two vinyl and hydroxy functional imidazolidone carbamates which polymerize readily into acrylate or vinyl acetate based emulsion polymers. The polymers show enhanced wet adhesion (wet scrubbability) in latex paints and coatings.Type: GrantFiled: June 26, 2000Date of Patent: March 25, 2003Assignee: Air Products Polymers, L.P.Inventors: Robert Krantz Pinschmidt, Jr., Khalil Yacoub, Christian Leonard Daniels, Kien Van Phung
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Patent number: 6319978Abstract: The present invention is directed to improved vinyl acetate ethylene pressure sensitive adhesive emulsion polymers. The improvement in the aqueous based, emulsion polymerized pressure sensitive adhesives resides in: a high ethylene content copolymer having a Tg of from −25 to −70° C.; a tensile storage modulus measured at one hertz and at a temperature of −20° C. embraced by the points on a plot of storage modulus and temperature of from 1 times 106 and the points 4 times 109 dynes/cm2 and less that 1 times 107 dynes/cm2 measured at 50° C.Type: GrantFiled: October 1, 1998Date of Patent: November 20, 2001Assignee: Air Products and Chemicals, Inc.Inventors: Christian Leonard Daniels, Chung-Ling Mao, Richard Henry Bott, Menas Spyros Vratsanos
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Patent number: 6063858Abstract: Improved aqueous emulsion vinyl acetate-ethylene (VAE) polymer adhesives for use in packaging applications and on difficult to bond surfaces such as polyethylene, poly(ethylene terephthalate), and oriented polypropylene. The VAE polymers contain about 55-80 wt % vinyl acetate, 15-45 wt % ethylene, and 0-30 wt % of one or more additional ethylenically unsaturated copolymerizable monomer, based on the total weight of monomers. Cast films of the VAE emulsion polymers of this invention should have a tensile storage modulus (test frequency of 6.28 rad/sec) within the area encompassed by the following data points: 1.times.10.sup.5 and 2.times.10.sup.7 dynes/cm.sup.2 at 23.degree. C., and 1.times.10.sup.3 and 2.times.10.sup.6 dynes/cm.sup.2 at 70.degree. C.; preferably within the area encompassed by the following data points: 1.times.10.sup.6 and 1.5.times.10.sup.7 dynes/cm.sup.2 at 23.degree. C., and 3.times.10.sup.4 and 9.times.10.sup.5 dynes/cm.sup.2 at 70.degree. C.Type: GrantFiled: November 19, 1998Date of Patent: May 16, 2000Assignee: Air Products and Chemicals, Inc.Inventors: Christian Leonard Daniels, Randolf J. Lorenz, Richard Joseph Goddard