Patents by Inventor Engelbert Pechhold
Engelbert Pechhold 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: 6245116Abstract: A terpolymer having units of Formula I wherein X is a C2-10 alkyl, C6-12 aryl, or C4-12 alkoxy radical, d is from about 3 to about 50, R is a fluoroalkyl radical Rf—(A)v—(B)w—, Rf is a fully fluorinated straight or branched aliphatic radical optionally interrupted by at least one oxygen atom, A is a divalent radical selected from —SO2N(R″)—, —CON(R″)—, —S—, or —SO2—, where R″ is H, or a C1-6 alkyl radical, B is a divalent linear hydrocarbon radical —CtH2t—, where t is 1 to 12, Y is a divalent radical —CH2—O—, u, v, and w are each independently zero or 1, R′ is hydrogen or methyl, e is from about 0.05 to about 10, M is hydrogen, alkali metal, or ammonium, and f is from about 5 to about 40, and its use to provide soil resistance and resistance to staining by acid dyes for fiber substrates is disclosed.Type: GrantFiled: May 6, 1999Date of Patent: June 12, 2001Assignee: E. I. du Pont de Nemours and CompanyInventors: Engelbert Pechhold, Peter Michael Murphy
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Patent number: 6238792Abstract: A terpolymer having units of Formula I wherein X is a C2-10 alkyl, C6-12 aryl, or C4-12 alkoxy radical, d is from about 3 to about 50, R is a fluoroalkyl radical Rf—(A)v—(B)w—, Rf is a fully fluorinated straight or branched aliphatic radical optionally interrupted by at least one oxygen atom, A is a divalent radical selected from —SO2N(R″)—, —CON(R″)—, —S—, or —SO2—, where R″ is H, or a C1-6 alkyl radical, B is a divalent linear hydrocarbon radical —CtH2t—, where t is 1 to 12, Y is a divalent radical —CH2—O—, u, v, and w are each independently zero or 1, R′ is hydrogen or methyl, e is from about 0.05 to about 10, M is hydrogen, alkali metal, or ammonium, and f is from about 5 to about 40, and its use to provide soil resistance and resistance to staining by acid dyes for fiber substrates is disclosed.Type: GrantFiled: June 21, 1999Date of Patent: May 29, 2001Assignee: E. I. du Pont de Nemours and CompanyInventors: Engelbert Pechhold, Peter Michael Murphy
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Patent number: 6093775Abstract: Polymers having pendant fluoroalkylsulfide side chains and processes for their preparation by nucleophilic displacement of halides in preformed polymers using fluoroalkylthiols are disclosed which provide oil and water repellency and antisoil properties to substrates.Type: GrantFiled: March 10, 1998Date of Patent: July 25, 2000Assignee: E. I. du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5945493Abstract: A terpolymer having units of Formula I ##STR1## wherein X is a C.sub.2-10 alkyl, C.sub.6-12 aryl, or C.sub.4-12 alkoxy radical,d is from about 3 to about 50,R is a fluoroalkyl radical R.sub.f (A).sub.v --(B).sub.w --,R.sub.f is a fully fluorinated straight or branched aliphatic radical optionally interrupted by at least one oxygen atom,A is a divalent radical selected from --SO.sub.2 N(R")--, --CON(R")--, --S--, or --SO.sub.2 --, where R" is H, or a C.sub.1-6 alkyl radical,B is a divalent linear hydrocarbon radical -CtH.sub.2 t-, where t is 1 to 12,Y is a divalent radical --CH.sub.2 --O--,u, v, and w are each independently zero or 1,R' is hydrogen or methyl,e is from about 0.05 to about 10,M is hydrogen, alkali metal, or ammonium, andf is from about 5 to about 40,and its use to provide soil resistance and resistance to staining by acid dyes for fiber substrates is disclosed.Type: GrantFiled: June 19, 1998Date of Patent: August 31, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: Engelbert Pechhold, Peter Michael Murphy
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Patent number: 5834088Abstract: A polyamide fibrous substrate having deposited on it an amount of a composition effective to impart stain-resistance comprising a water-soluble or water-dispersible alpha-olefin/maleic anhydride polymer or a mixture of said polymers, and processes for preparing the substrates. The maleic anhydride polymer is used either in hydrolyzed form or in the form resulting from reacting it with a lower alkyl alcohol so as to form an alpha-olefin/maleic acid monalkyl ester polymer.Type: GrantFiled: September 16, 1997Date of Patent: November 10, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5824372Abstract: A copolymer having units of Formula II: ##STR1## wherein M is H, alkali metal, anmonium cation, or a mixture thereof;N is OM or a mixture of OM, OR, and NR.sub.1 R.sub.2 in a molar ratio of (OM):(OR):(NR.sub.1 R.sub.2) of ?1-(e+f)!:e:f, wherein e and f are each independently 0 to 0.5, provided that (e+f) is less than 0.8;R, R.sub.1, and R.sub.2 are each independently H or a branched or straight chain C.sub.1-20 alkyl;Y is a C.sub.2-10 alkyl, C.sub.6-12 aryl, or C.sub.4-12 alkoxy;X is a fluorinated thiol radical;Z is H; andv and w are each a positive number such that the molar ratio of v to w is from about 0.4:1 to about 1.3:1 is disclosed.Type: GrantFiled: September 25, 1997Date of Patent: October 20, 1998Assignee: E. I. du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5770656Abstract: A composition of partial esters or thioesters formed from copolymers of maleic anhydride and perfluoroalkyl alcohols or perfluoroalkyl thiols is disclosed, and a process for providing soil and stain resistance to fibers by application of such partial esters or thioesters.Type: GrantFiled: September 22, 1995Date of Patent: June 23, 1998Assignee: E.I. du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5750445Abstract: The present invention comprises a process for providing soil resistance and resistance to staining by acid dyes to fibers and textiles by simultaneous or sequential application of a sulfonated phenol-formaldehyde condensation product and partial fluoroesters or fluorothioesters formed from copolymers of maleic anhydride and perfluoroalkyl alcohols or perfluoroalkyl thiols.Type: GrantFiled: May 9, 1997Date of Patent: May 12, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Engelbert Pechhold, Peter Michael Murphy
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Patent number: 5712348Abstract: A copolymer having units of Formula II: ##STR1## wherein M is H, alkali metal, ammonium cation, or a mixture thereof;N is OM or a mixture of OM, OR, and NR.sub.1 R.sub.2 in a molar ratio of (OM):(OR):(NR.sub.1 R.sub.2) of ?1-(e+f)!:e:f, wherein e and f are each independently 0 to 0.5, provided that (e+f) is less than 0.8;R, R.sub.1, and R.sub.2 are each independently H or a branched or straight chain C.sub.1-20 alkyl;Y is a C.sub.2-10 alkyl, C.sub.6-12 aryl, or C.sub.4-12 alkoxy;X is a fluorinated thiol radical;Z is H; andv and w are each a positive number such that the molar ratio of v to w is from about 0.4:1 to about 1.3:1 is disclosed.Type: GrantFiled: March 13, 1996Date of Patent: January 27, 1998Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5708087Abstract: A composition which provides polyamide substrates with resistance to staining by acid dyes comprising(A) carboxylic acid-containing stain-resist polymers selected from:(i) methacrylic acid polymers, or(ii) hydrolyzed copolymers of maleic anhydride with ethylenically unsaturated aromatics, alpha-olefins, alkyl vinyl ethers or alkyl allyl ethers or(iii) mixtures of (i) and (ii),and(B) resole condensates prepared by reacting bis(hydroxyphenyl)sulfone which contains no sulfonate or carboxylate groups with formaldehyde in the presence of an alkali metal hydroxide, at a bis(hydroxyphenyl)sulfone resole resin:carboxylic acid-containing stain-resist polymer weight ratio in the range between about 1:20 and 2.5:1.0 is disclosed.Type: GrantFiled: May 14, 1997Date of Patent: January 13, 1998Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert Craig Buck, Engelbert Pechhold
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Patent number: 5707708Abstract: A polyamide fibrous substrate having deposited on it an amount of a composition effective to impart stain-resistance comprising a water-soluble or water-dispersible alpha-olefin/maleic anhydride polymer or a mixture of said polymers, and processes for preparing the substrates. The maleic anhydride polymer is used either in hydrolyzed form or in the form resulting from reacting it with a lower alkyl alcohol so as to form an alpha-olefin/maleic acid monalkyl ester polymer.Type: GrantFiled: January 29, 1996Date of Patent: January 13, 1998Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5670246Abstract: The present invention comprises a process for providing soil resistance and resistance to staining by acid dyes to fibers and textiles by simultaneous or sequential application of a sulfonated phenol-formaldehyde condensation product and partial fluoroesters or fluorothioesters formed from copolymers of maleic anhydride and perfluoroalkyl alcohols or perfluoroalkyl thiols.Type: GrantFiled: September 22, 1995Date of Patent: September 23, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventors: Engelbert Pechhold, Peter Michael Murphy
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Patent number: 5654068Abstract: A stain-resist for polyamide textiles comprises blends of maleic anhydride/alpha-olefin polymers with sulfonated phenol-formaldehyde condensation products. The stain-resist blends are water-soluble at low pH, even in the absence of surfactant, and are strongly substantive and more resistant to yellowing than the condensation products.Type: GrantFiled: March 26, 1996Date of Patent: August 5, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5460887Abstract: Polyamide substrates treated with stain-resists which comprise blends of maleic anhydride/alpha-olefin polymers and sulfonated phenol-formaldehyde condensation products. Some of the stain-resist blends are water-soluble at low pH, even in the absence of surfactant, and are strongly substantive and more resistant to yellowing than the condensation products.Type: GrantFiled: January 5, 1995Date of Patent: October 24, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5460891Abstract: Polyamide fibrous substrates which resist staining by acid dyes and discoloration upon exposure to UV light, and processes for preparing the same which comprise applying, at pH 2 to 10, a base-catalyzed condensation product formed by the reaction of a bis(hydroxyphenyl)sulfone with formaldehyde to give a product known as a resole.Type: GrantFiled: August 5, 1994Date of Patent: October 24, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert C. Buck, Engelbert Pechhold, Donald D. May
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Patent number: 5447755Abstract: Polyamide fibrous substrates which resist staining by acid dyes and discoloration upon exposure to UV light, and processes for preparing the same which comprise applying, at pH 2 to 10, a base-catalyzed condensation product formed by the reaction of a bis(hydroxyphenyl)sulfone with formaldehyde to give a product known as a resole.Type: GrantFiled: August 5, 1994Date of Patent: September 5, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Engelbert Pechhold, Robert C. Buck, Donald D. May
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Patent number: 5358769Abstract: Processes and compositions which at the same time impart resistance to staining of polyamide substrates caused by acid dyes and improved durability to shampooing and resistance to yellowing caused by exposure to UV and/or NO.sub.x, whereby the stain-resist performance of hydrolyzed maleic anhydride copolymers can be dramatically improved either by co-applying the stain with a water-dispersed epoxy resin or by post-treatment of the stain-resist-treated polyamide fiber substrate with a water-dispersed epoxy resin.Type: GrantFiled: February 2, 1993Date of Patent: October 25, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5356689Abstract: Process for imparting to polyamide substrates resistance to staining by acid dyes which is durable to shampooing and resistance to yellowing caused by exposure to UV and/or NO.sub.x, comprising applying to said substrate (A) one or more epoxy resins and (B) a polymeric stain-resist agent consisting essentially of (i) copolymers containing more than 75 weight percent methacrylic acid and less than 25 weight percent of one or more other ethylenically unsaturated monomers, or (ii) polymers prepared by polymerizing (a) methacrylic acid or (b) mixtures of methacrylic acid and one or more other ethylenically unsaturated monomers, in the presence of a sulfonated hydroxyaromatic-formaldehyde condensation product.Type: GrantFiled: April 26, 1993Date of Patent: October 18, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5346726Abstract: A polyamide fibrous substrate having deposited on it an amount of a composition effective to impart stain-resistance comprising a water-soluble or water-dispersible maleic anhydride/allyl ether or vinyl ether polymer or a mixture of said polymers, and processes for preparing the substates. The maleic anhydride polymer is used either in hydrolyzed form.Type: GrantFiled: October 15, 1992Date of Patent: September 13, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold
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Patent number: 5260406Abstract: A stain-resist agent for polyamide fibers, its preparation and use are disclosed. The stain-resist agent is the condensation product of bis-hydroxyphenylsulfone with 0.5 to 1.0 mole of formaldehyde, per mole of bis-hydroxyphenylsulfone, and 0.15 to 1.5 moles of mercaptoacetic acid or mercaptosuccinic acid per mole of bis-hydroxyphenylsulfone and ammonium hydroxide or an alkali metal hydroxide in an amount sufficient to neutralize the mercapto acid plus an excess of about 0.2 to 0.6 mole of hydroxide per mole of bis-hydroxyphenylsulfone. Generally the reaction is carried out at 110.degree. to 180.degree. C. for 1 to 48 hours, with 130.degree. to 160.degree. C. for 3 to 24 hours being preferred. The product is applied to the polyamide fibers from an aqueous bath to provide a coating of 0.5 to 5.0 wt % stain-resist agent. The stain-resist is applied in the presence of a magnesium salt.Type: GrantFiled: April 14, 1992Date of Patent: November 9, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Engelbert Pechhold