Patents by Inventor Aster De Schrijver

Aster De Schrijver 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: 9796808
    Abstract: A one component precursor for the polymeric foam (OCF) composition comprising a very low amount of free monomeric MDI. The present OCF composition may be obtained without any free MDI removal step, and without the addition of extra solvent to compensate for the substantially lower amount of free MDI, compared with traditional compositions. The present composition comprises a source of free NCO of functionality of at least 2.6, a tri- or higher functional alcohol, all polyols being characterized by a rather low molecular weight and at least a specific mono-functional alcohol as well as an isocyanate end-capped prepolymer of toluene diisocyanate (=end capped TDI). The OCF composition is suitable for being dispensed from a pressurized can with a blowing agent.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: October 24, 2017
    Inventors: Aster De Schrijver, Joao Moura Bordado, Georgi Georigev
  • Publication number: 20150274404
    Abstract: The present invention is a valve for a container. The valve includes a grommet defining a channel with an inlet end and an outlet end. The valve has a stem, slideably arranged in the channel, and the grommet includes a first part provided at the inlet end and a second part provided at the outlet end. The first part has a hardness greater than the hardness of the second part.
    Type: Application
    Filed: November 28, 2014
    Publication date: October 1, 2015
    Inventor: Aster De Schrijver
  • Patent number: 9080022
    Abstract: A pressurized can containing a polymer foam composition for use in one component and two component foams, with the polymer foam composition having an unsaturated resin and an oligomeric acrylic resin, wherein the composition has a cure rate of maximum 3 hours.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 14, 2015
    Assignee: GREENSEAL CHEMNICALS NV
    Inventor: Aster De Schrijver
  • Publication number: 20150001248
    Abstract: A pressurized container for dispensing a 1K adhesive or sealant composition is disclosed. The container has an outer container with at least one dispensing opening and a deformable inner container to be filled with the 1K composition. The inner container is accommodated in the outer container and also has a dispensing opening. The inner container is connected to the outer container. The outer container has a pressure generator containing an amount of activated carbon having a propellant gas adsorbed thereon.
    Type: Application
    Filed: February 13, 2013
    Publication date: January 1, 2015
    Inventor: Aster De Schrijver
  • Patent number: 8905273
    Abstract: The present invention is a valve for a container. The valve includes a grommet defining a channel with an inlet end and an outlet end. The valve has a stem, slideably arranged in the channel, and the grommet includes a first part provided at the inlet end and a second part provided at the outlet end. The first part has a hardness greater than the hardness of the second part.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: December 9, 2014
    Assignee: Altachem Holding NV
    Inventor: Aster de Schrijver
  • Publication number: 20140288201
    Abstract: A one component precursor for the polymeric foam (OCF) composition comprising a very low amount of free monomeric MDI. The present OCF composition may be obtained without any free MDI removal step, and without the addition of extra solvent to compensate for the substantially lower amount of free MDI, compared with traditional compositions. The present composition comprises a source of free NCO of functionality of at least 2.6, a tri- or higher functional alcohol, all polyols being characterized by a rather low molecular weight and at least a specific mono-functional alcohol as well as an isocyanate end-capped prepolymer of toluene diisocyanate (=end capped TDI). The OCF composition is suitable for being dispensed from a pressurized can with a blowing agent.
    Type: Application
    Filed: January 26, 2012
    Publication date: September 25, 2014
    Inventors: Aster De Schrijver, Joao Moura Bordado, Georgi Goerigev
  • Publication number: 20130200111
    Abstract: The present invention is directed to a valve (1) for a container comprising a grommet (2) having a plug system (10) and defining a channel (3) with an inlet end (4) and an outlet end (5) and a stem (8) slideably arranged in the channel (3), whereby the grommet (2) comprises at least two parts (7) and (8) sealingly engaged, said first part (7) having protrusion within said second part (8).
    Type: Application
    Filed: August 18, 2010
    Publication date: August 8, 2013
    Applicants: FAIGLE KUNSTSTOFFE GMBH, ALTACHEM HOLDING NV
    Inventors: Aster De Schrijver, Cathy De Maertelaere, Jordi Demey, Dietmar Murnig
  • Publication number: 20120199671
    Abstract: A leach proof microcapsule containing hydrophobic active molecules, wherein the microcapsule shell breaks upon exposure to a positive pressure drop across the inner and outer sides of the shell, 0<?P=Pin?Pout>5 bar, wherein Pin and Pout are the pressures in, respectively, out of the microcapsule. The microcapsule shell consists of a alkylated organosilica compound, either fully alkylated or having an alkylation degree comprised between 2 and 25 mol. %, preferably between 5 and 20 mol. %, more preferably between 8 and 15 mol. %. The microcapsules of the present invention are particularly suitable for use in compositions for active-catalyzed polymerization reactions to form sealants, foams, coatings or adhesives.
    Type: Application
    Filed: July 1, 2010
    Publication date: August 9, 2012
    Inventors: Aster De Schrijver, Mario Pagliaro, Rosaria Ciriminna, Marzia Sciortino
  • Publication number: 20120135172
    Abstract: A pressurized can containing a polymer foam composition for use in one component and two component foams, with the polymer foam composition having an unsaturated resin and an oligomeric acrylic resin, wherein the composition has a cure rate of maximum 3 hours.
    Type: Application
    Filed: March 23, 2010
    Publication date: May 31, 2012
    Inventor: Aster De Schrijver
  • Publication number: 20100147902
    Abstract: The present invention concerns a valve for a container, the valve comprising: a grommet defining a channel with an inlet end and an outlet end; a stem, slideably arranged in said channel; the grommet comprising a first part provided at said inlet end and a second part provided at said outlet end, wherein the first part has a hardness greater than the hardness of the second part.
    Type: Application
    Filed: July 7, 2008
    Publication date: June 17, 2010
    Applicant: ALTACHEM HOLDING NV
    Inventor: Aster De Schrijver
  • Publication number: 20090170974
    Abstract: The invention is directed to a polymer foam precursor composition comprising 1 to 60%, preferably 5 to 30% by weight, of a biodiesel obtained by transesterification of vegetable oils. The polymer foam is advantageously a polyurethane foam and the biodiesel is a mixture of methyl and or ethyl fatty acid esters. The biodiesel is a latent hardener and/or extender and/or liquid filler The composition is advantageously used in pressurized vessel or aerosol type cans.
    Type: Application
    Filed: December 14, 2006
    Publication date: July 2, 2009
    Inventors: Aster De Schrijver, Joao Carlos Moura Bordado
  • Publication number: 20070215650
    Abstract: The invention concerns an improvement to the design of a tilting/gun valve, more particularly regarding the problem of sticking/blocking. The valve comprises a cup (5), a stem (10) with an enlarged circular base (21) end extending perpendicularly and, therebetween, a grommet (22) made of an elastomer polymer. The grommet (22) is provided with a flat lower surface extending essentially on all the flat upper surface of the enlarged base of the stem to secure the sealing effect. The grommet (22) height H below the cup is less than 4 mm.
    Type: Application
    Filed: April 25, 2005
    Publication date: September 20, 2007
    Inventors: Aster De Schrijver, Herman Dhaenens
  • Publication number: 20060243940
    Abstract: The invention concerns an improvement to a grommet, preferably for a tilting valve of a container, which increases the protection against moisture diffusion and uptake, in order to avoid blocking or leaking of the valve. The valve comprises a grommet (1) having at least one part made (1A) of non-thermoplastic rubber and another part (1B) made of a thermoplastic material, the latter being in contact with the content of the container. This valve is preferably made by the dual injection technique. The non-thermoplastic rubber may be EPDM or Santoprene and the thermoplastic rubber may be Trefsin.
    Type: Application
    Filed: March 19, 2004
    Publication date: November 2, 2006
    Inventor: Aster De Schrijver