Patents by Inventor Noel Raymond Maurice De Keyzer
Noel Raymond Maurice De Keyzer 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: 7202297Abstract: The invention relates to an adhesive composition comprising (i) one or more styrenic block copolymers, (ii) a tackifier resin, and (iii) one or more plasticizers, wherein the or one of the styrenic block copolymers is of the general formulae A-C-A, ??(1) or (A-C)n-X, ??(2) wherein each A independently is a polymer block of an aromatic vinyl compound, and C is a mixed polymer block (B/I) of butadiene (B) and isoprene (I) in a weight ratio B:I in the range of 30:70 to 70:30, and said polymer block C has a glass transition temperature (Tg) of at most ?50° C. (determined according to ASTM E-1356-98), n is an integer equal to or greater than 2, and X is the residue of a coupling agent, and wherein the tackifier resin has an aromaticity (in relative percentage of aromatic protons as determined by H-NMR) in the range of from 3 to 18%.Type: GrantFiled: January 17, 2002Date of Patent: April 10, 2007Assignee: Kraton Polymers LLCInventors: Noel Raymond Maurice De Keyzer, Jeffrey George Southwick, Martin Van Dijk
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Publication number: 20040116582Abstract: The invention relates to an adhesive composition comprising (i) one or more styrenic block copolymers, (ii) a tackifier resin, and (iii) one or more plasticizers, wherein the or one of the styrenic block copolymers is of the general formulaeType: ApplicationFiled: January 20, 2004Publication date: June 17, 2004Inventors: Noel Raymond Maurice De Keyzer, Jeffrey George Southwick, Martin Van Dijk
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Patent number: 6730737Abstract: A releasable pressure sensitive adhesive composition comprising: (a) a block copolymer comprising at least one poly(monovinyl aromatic hydrocarbon) block and at least one poly(conjugated diene) block and having a vinyl content of at least 3% by weight, (b) a tackifying resin, and (c) a plasticizer, wherein the block copolymer has been crosslinked through its vinyl groups by means of a reaction with an organohydrogenpolysiloxane crosslinking agent containing at least two hydrogen atoms which are directly bonded to a silicon atom. This is carried out in the presence of a crosslinking catalyst. The plasticizer is present in an amount of from 1 to 50 parts by weight per 100 parts by weight of block copolymer. The releasable adhesive composition can be suitably applied in removable self-adhering memo notes and in removable tapes and labels.Type: GrantFiled: December 22, 1994Date of Patent: May 4, 2004Assignee: Kraton Polymers U.S. LLCInventors: Noel Raymond Maurice De Keyzer, Geert Emiel Anna Vermunicht
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Patent number: 6657000Abstract: The present invention is a hot melt pressure sensitive positioning adhesive for use with an absorbent article. The adhesive comprises: (a) from 5 to less than 15 percent by weight of a blend of (i) a hydrogenated styrene-(butadiene or isoprene)-styrene block copolymer having a polystyrene block number average molecular weight of 20,000 or less, and (ii) a homogeneous linear or substantially linear interpolymer of ethylene and at least one C3-C20 alpha olefin having a density from 0.85 to 0.91 grams per cubic centimeter; and (b) from 50 to 80 percent by weight of a tackifying resin which has an aromaticity such that the MMAP cloud point is at least 45° C.; and (c) from 5 to 35 percent by weight of a plasticizing oil. The block copolymer of (i) may also be one in which the polystyrene block molecular weight is greater than 20,000. In such case, the tackifying resin must have an aromaticity wherein the MMAP cloud point is at least 70° C.Type: GrantFiled: June 20, 2000Date of Patent: December 2, 2003Assignee: Kraton Polymers U.S. LLCInventors: Noël Raymond Maurice De Keyzer, Carolyn Ann Stoner
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Patent number: 6465557Abstract: The present invention is a hot melt pressure sensitive positioning adhesive for use with an absorbent article. The adhesive comprises: (a) from greater than 6 to less than 15 percent by weight of the total of (a), (b) and (c) of a hydrogenated styrene-(butadiene and/or isoprene)-styrene block copolymer having a vinyl content of greater than 50% by weight; and (b) from 50 to 80 percent by weight of the total of (a), (b) and (c) of a tackifying resin which has an aromaticity such that the MMAP cloud point is at least 45° C.; and (c) from 5 to 35 percent by weight of the total of (a), (b) and (c) of a plasticizer.Type: GrantFiled: June 22, 2000Date of Patent: October 15, 2002Assignee: Kraton Polymers U.S. LLCInventors: Noël Raymond Maurice De Keyzer, Carolyn Ann Stoner
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Patent number: 6455627Abstract: The present invention is a hot melt pressure sensitive positioning adhesive for use with an absorbent article. The adhesive comprises: (a) from 6 to less than 15 percent by weight, of the total of (a), (b) and (c) of a blend of (i) from 40 to 95% by weight of a hydrogenated styrene-(butadiene and/or isoprene)-styrene block copolymer; and (ii) from 5 to 60% by weight of a blend of a hydrogenated styrene-isoprene-styrene-isoprene block copolymer; and (iii) from 0 to 40% by weight of an amorphous ethylene/propylene copolymer having a number average molecular weight of 9,000 to 30,000; and (b) from 50 to 80 percent by weight, of the total of (a), (b) and (c), of a tackifying resin which has an aromaticity such that the MMAP cloud point is at least 45° C.; and (c) from 5 to 35 percent by weight, of the total of (a), (b) and (c), of a plasticizer.Type: GrantFiled: June 22, 2000Date of Patent: September 24, 2002Assignee: Kraton Polymers US LLCInventors: Noël Raymond Maurice De Keyzer, Carolyn Ann Stoner
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Patent number: 5948527Abstract: Hot melt adhesive compositions, comprising(a) a radial multiarmed block copolymer (AB).sub.n X, wherein A is a block predominantly derived from a monovinylaromatic compound, B is a block predominantly derived from butadiene and which optionally has been partially or completely hydrogenated,X is the residue of a multifunctional coupling agent,n is in the range of from 3 to 6,(b) a linear block copolymer AB, the components (a)+(b) being present in an amount of 100 parts by weight,(c) a tackifying resin, which is compatible with the blocks B, in an amount of from 100 to 500 parts by weight,(d) a plasticizer in an amount of from 100 to 300 parts by weight,(e) an antioxidant-UV stabiliser in an amount from 0.Type: GrantFiled: January 20, 1998Date of Patent: September 7, 1999Assignee: Shell Oil CompanyInventors: Eric-Jack Gerard, Noel Raymond Maurice De Keyzer, Birgitte Maria Ludovica Christine Van De Vliet
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Patent number: 5804663Abstract: Radiation sensitive block copolymers to be used in hot melt adhesive composition characterized in that they have the general formula (AB).sub.p (B.sup.1).sub.q X, wherein A is poly(vinylaromatic) block and B and B.sup.1 are poly(butadiene) blocks, wherein X is the residue of a hexavalent coupling agent, wherein p and q both have a number average value in the range from 1.5 to 4.5, whereas the sum of p and q values being 6, wherein the block copolymers have an average bound vinyl aromatic content in the range of from 10 to 50 wt %, preferably in the range of from 10 to 30 wt %, a total apparent molecular weight in the range of from 100,000 to 500,000, and a vinyl content in the poly(butadiene) blocks in the range of from 35 to 70 wt %.Type: GrantFiled: March 13, 1996Date of Patent: September 8, 1998Assignee: Shell Oil CompanyInventors: Luc Ives Jaak De Craene, Martine Jeanne Dupont, Noel Raymond Maurice De Keyzer, Karin Marie-Louise Renee Morren, Jeroen Van Westrenen
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Patent number: 5777039Abstract: Block copolymers suitable for hot melt adhesive composition characterized in that they have the general formula (AB).sub.p (B.sup.1).sub.q X, wherein A is poly(vinylaromatic) block and B and B.sup.1 are the same or different poly(butadiene) blocks, wherein the 1,2 addition (vinyl) content is in the range of from 25 to 70% by weight, wherein X is the residue of a multivalent coupling agent having a maximum of active sites (m) in the range of from 3 to 6, wherein p and q both are integers of from 0 to m, provided that the sum of p and q values is less than m and the coupling efficiency is less than 90%, said block copolymer having an average total vinyl aromatic content in the range of from 10 to 50 wt % and preferably in the range of from 10 to 30 wt %, and having a total apparent molecular weight in the range of from 100,000 to 500,000.Type: GrantFiled: February 5, 1997Date of Patent: July 7, 1998Assignee: Shell Oil CompanyInventors: Luc Ives Jaak De Craene, Martine Jeanne DuPont, Eric-Jack Gerard, Noel Raymond Maurice De Keyzer, Karin Marie-Louise Renee Morren, Jeroen Van Westrenen
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Patent number: 5750607Abstract: Hot melt adhesive compositions, comprising(a) a radial multiarmed block copolymer (AB).sub.n X, wherein A is a block predominantly derived from a monovinylaromatic compound, B is a block predominantly derived from butadiene and which optionally has been partially or completely hydrogenated,X is the residue of a multifunctional coupling agent,n is in the range of from 3 to 6,(b) a linear block copolymer AB, the components (a)+(b) being present in an amount of 100 parts by weight,(c) a tackifying resin, which is compatible with the blocks B, in an amount of from 100 to 500 parts by weight,(d) a plasticizer in an amount of from 100 to 300 parts by weight,(e) an antioxidant-UV stabiliser in an amount from 0.Type: GrantFiled: March 6, 1997Date of Patent: May 12, 1998Assignee: Shell Oil CompanyInventors: Eric-Jack Gerard, Noel Raymond Maurice De Keyzer, Birgitte Maria Ludovica Christine Van De Vliet