Patents by Inventor Sandra Guinebretiere
Sandra Guinebretiere 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: 11351096Abstract: Disclosed is a process for preparing an encapsulated fragrance composition. The composition comprises a plurality of microcapsules dispersed in a dispersion medium. The microcapsules comprise a core and a shell around the core. The process comprises the consecutive steps of: a) Providing an aqueous phase (I) comprising at least one anionically modified polyisocyanate (A); b) Providing an organic phase (II) comprising at least one fragrance ingredient; c) Mixing the aqueous phase (I) and the an organic phase (II) to obtain a mixture; d) Forming an emulsion comprising droplets of the organic phase (II) in the continuous aqueous phase (I); e) Adding at least one polyfunctional amine; f) Effecting formation of shells around the droplets formed in step d), to obtain a dispersion of microcapsules. The process comprises the additional step of adding a polyisocyanate (B), which is different from polyisocyanate (A).Type: GrantFiled: March 6, 2019Date of Patent: June 7, 2022Assignee: GIVAUDAN SAInventors: Sarah El-Habnouni, Emmanuel Aussant, Vladica Bocokic, Sandra Guinebretiere, Florent Robert
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Patent number: 11060050Abstract: The invention relates to stable dispersion of negatively-charged aminoplast microcapsules in non-suspending detergent compositions containing an anionic surfactant. The microcapsules are stably dispersed by means of a cationic polyampholyte, which is embedded in the shells of said microcapsules.Type: GrantFiled: April 17, 2018Date of Patent: July 13, 2021Assignee: GIVAUDAN SAInventors: Emmanuel Aussant, Sandra Guinebretiere
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Publication number: 20210030639Abstract: Disclosed is a process for preparing an encapsulated fragrance composition. The composition comprises a plurality of microcapsules dispersed in a dispersion medium. The microcapsules comprise a core and a shell around the core. The process comprises the consecutive steps of: a) Providing an aqueous phase (I) comprising at least one anionically modified polyisocyanate (A); b) Providing an organic phase (II) comprising at least one fragrance ingredient; c) Mixing the aqueous phase (I) and the an organic phase (II) to obtain a mixture; d) Forming an emulsion comprising droplets of the organic phase (II) in the continuous aqueous phase (I); e) Adding at least one polyfunctional amine; f) Effecting formation of shells around the droplets formed in step d), to obtain a dispersion of microcapsules. The process comprises the additional step of adding a polyisocyanate (B), which is different from polyisocyanate (A).Type: ApplicationFiled: March 6, 2019Publication date: February 4, 2021Inventors: Sarah EL-HABNOUNI, Emmanuel AUSSANT, Vladica BOCOKIC, Sandra GUINEBRETIERE, Florent ROBERT
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Patent number: 10808208Abstract: The invention relates to an encapsulated fragrance composition including at least one microcapsule dispersed in a dispersion medium, said at least one microcapsule including a fragrance oil core and a positively charged shell, which includes a reaction product of at least one at least difunctional anionically modified isocyanate with an amine or alcohol, preferably a polyamine, and wherein the shell is formed around droplet of core material that is stabilized with a positively charged colloidal stabilizer. Furthermore, the invention relates to a process of formation of said encapsulated fragrance compositions.Type: GrantFiled: September 19, 2017Date of Patent: October 20, 2020Assignee: Givaudan SAInventors: Emmanuel Aussant, Ian Michael Harrison, Sandra Guinebretiere, Frederic Blondel, Guillaume Jeanson
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Patent number: 10758885Abstract: The invention relates to the use of an ampholyte copolymer as a colloidal stabilizer in the preparation of core-shell microcapsules containing a fragrance, wherein the ampholyte copolymer comprises: 2 to 99 mol % of cationic monomer having at least one quaternary ammonium group, 1 to 98 mol % of acrylic based monomer, 0 to 97 mol % of non-ionic monomer, and wherein the ampholyte copolymer has more cationic charges than anionic charges, wherein the cationic charges of the ampholyte copolymer are exclusively due to the at least one quaternary ammonium group of the cationic monomer.Type: GrantFiled: September 18, 2017Date of Patent: September 1, 2020Assignee: S.P.C.M. SAInventors: Frédéric Blondel, Emmanuel Aussant, Sandra Guinebretiere, Ian Michael Harrison, Guillaume Jeanson
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Publication number: 20200190441Abstract: The invention relates to stable dispersion of negatively-charged aminoplast microcapsules in non-suspending detergent compositions containing an anionic surfactant. The microcapsules are stably dispersed by means of a cationic polyampholyte, which is embedded in the shells of said microcapsules.Type: ApplicationFiled: April 17, 2018Publication date: June 18, 2020Inventors: Emmanuel AUSSANT, Sandra GUINEBRETIERE
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Publication number: 20190255501Abstract: The invention relates to the use of an ampholyte copolymer as a colloidal stabilizer in the preparation of core-shell microcapsules containing a fragrance, wherein the ampholyte copolymer comprises: 2 to 99 mol % of cationic monomer having at least one quaternary ammonium group, 1 to 98 mol % of acrylic based monomer, 0 to 97 mol % of non-ionic monomer, and wherein the ampholyte copolymer has more cationic charges than anionic charges, wherein the cationic charges of the ampholyte copolymer are exclusively due to the at least one quaternary ammonium group of the cationic monomer.Type: ApplicationFiled: September 18, 2017Publication date: August 22, 2019Applicant: S.P.C.M. SAInventors: Frédéric BLONDEL, Emmanuel AUSSANT, Sandra GUINEBRETIERE, Ian Michael HARRISON, Guillaume JEANSON
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Publication number: 20190233770Abstract: The invention relates to an encapsulated fragrance composition including at least one microcapsule dispersed in a dispersion medium, said at least one microcapsule including a fragrance oil core and a positively charged shell, which includes a reaction product of at least one at least difunctional anionically modified isocyanate with an amine or alcohol, preferably a polyamine, and wherein the shell is formed around droplet of core material that is stabilized with a positively charged colloidal stabilizer. Furthermore, the invention relates to a process of formation of said encapsulated fragrance compositions.Type: ApplicationFiled: September 19, 2017Publication date: August 1, 2019Applicant: Givaudan SAInventors: Emmanuel AUSSANT, Ian Michael HARRISON, Sandra GUINEBRETIERE, Frederic BLONDEL, Guillaume JEANSON
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Publication number: 20070202063Abstract: The present invention relates to benefit agent containing delivery particles, compositions comprising said particles, and processes for making and using the aforementioned particles and compositions. When employed in compositions, for example, cleaning or fabric care compositions, such particles increase the efficiency of benefit agent delivery, there by allowing reduced amounts of benefit agents to be employed. In addition to allowing the amount of benefit agent to be reduced, such particles allow a broad range of benefit agents to be employed.Type: ApplicationFiled: February 15, 2007Publication date: August 30, 2007Inventors: Jiten Dihora, Peggy Sands, Renae Fossum, David York, Matthew Lang, Sandra Guinebretiere
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Publication number: 20070021533Abstract: The invention teaches an encapsulated curable adhesive composition especially adapted for use as a structural adhesive. The adhesive composition enables formation of a thin layer reactive composition of microcapsules and a two-part curative. The adhesive composition comprises a first population of microcapsules encasing a monomer and a first-part curative comprising an initiator. The adhesive composition further comprises a second-part curative. The second-part curative comprises an activator and a catalyst. At least the activator of the second-part curative is preferably encapsulated in a second population of microcapsules. The catalyst and the second population of microcapsules can be dispersed in a binder material, along with the first population of microcapsules. The first population of microcapsules contain encapsulated within the core a monomer having a Tg 35° C. or less and the first-part curative. The first population microcapsules contain encapsulated within the core a monomer having a Tg 35° C.Type: ApplicationFiled: June 13, 2006Publication date: January 25, 2007Applicant: Appleton Papers Inc.Inventors: Nianxi Yan, Peggy Sands, Sandra Guinebretiere