Patents by Inventor Arwin W. Van Der Waal
Arwin W. Van Der Waal 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: 11926731Abstract: A composition comprising selectively hydrogenated block copolymers (a) and (b having peak molecular weights of 150-1,000 kg/mol, 6-60 kg/mol, respectively, is disclosed. Component (a) comprises one or more structures A-B-A, (A-B-A)nX, A-(B-A)n, and (A-B)nX. Component (b) comprises one or more structures C-D, D-C-D, and (D-C)nX. The value of “n” is 1-30, and “X” is a residue of a coupling agent. Before hydrogenation, blocks A and C, are vinyl aromatic polymer blocks; and blocks B and D are polymer blocks comprising 60-100 mol % of one or more conjugated dienes and 0-40 mol % of a vinyl aromatic monomer. The HSBC compositions and TPE blends exhibits good elasticity, good processability, low extractables, and low compression set.Type: GrantFiled: August 18, 2021Date of Patent: March 12, 2024Assignee: KRATON CORPORATIONInventors: Xavier D. D. J. Muyldermans, Arwin W. van der Waal, Hendrik de Groot
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Publication number: 20220064432Abstract: A composition comprising selectively hydrogenated block copolymers (a) and (b having peak molecular weights of 150-1,000 kg/mol, 6-60 kg/mol, respectively, is disclosed. Component (a) comprises one or more structures A-B-A, (A-B-A)nX, A-(B-A)n, and (A-B)nX. Component (b) comprises one or more structures C-D, D-C-D, and (D-C)nX. The value of “n” is 1-30, and “X” is a residue of a coupling agent. Before hydrogenation, blocks A and C, are vinyl aromatic polymer blocks; and blocks B and D are polymer blocks comprising 60-100 mol % of one or more conjugated dienes and 0-40 mol % of a vinyl aromatic monomer. The HSBC compositions and TPE blends exhibits good elasticity, good processibility, low extractables, and low compression set.Type: ApplicationFiled: August 18, 2021Publication date: March 3, 2022Applicant: Kraton Polymers LLCInventors: Xavier D.D.J. Muyldermans, Arwin W. van der Waal, Hendrik de Groot
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Patent number: 10793719Abstract: The disclosure relates to elastomeric compositions having improved soft touch feel to skin, and in particular grip, especially during wet/humid conditions. In one embodiment, the compositions are part of a composite system, wherein the compositions are connected, for example bonded, molded, over-molded or co-extruded to a substrate, such as a thermoplastic, wood, glass or metal. The elastomeric composition comprises: (a) one or more copolymers present in an amount of 10 wt. % to 90 wt. %, selected from styrenic block copolymers and isoprene polymers; (b) one or more resins an amount of 2 wt. % to 20 wt. %; and optionally (c) at least one softener, filler, antioxidant or the like present in an amount up to 80 wt. %. The resin is selected from coumarone-indene resin, petroleum hydrocarbon resin, terpene based polymers, styrene-alpha-methyl-styrene resins, rosin derived resins, and mixtures thereof.Type: GrantFiled: September 29, 2018Date of Patent: October 6, 2020Assignee: Kraton Polymers LLCInventors: Jason D. Gillen, Bhavesh Shah, Jeremie Pichereau, Arwin W. van der Waal, Joris Smit
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Publication number: 20190100652Abstract: The disclosure relates to elastomeric compositions having improved soft touch feel to skin, and in particular grip, especially during wet/humid conditions. In one embodiment, the compositions are part of a composite system, wherein the compositions are connected, for example bonded, molded, over-molded or co-extruded to a substrate, such as a thermoplastic, wood, glass or metal. The elastomeric composition comprises: (a) one or more copolymers present in an amount of 10 wt. % to 90 wt. %, selected from styrenic block copolymers and isoprene polymers; (b) one or more resins an amount of 2 wt. % to 20 wt. %; and optionally (c) at least one softener, filler, antioxidant or the like present in an amount up to 80 wt. %. The resin is selected from coumarone-indene resin, petroleum hydrocarbon resin, terpene based polymers, styrene-alpha-methyl-styrene resins, rosin derived resins, and mixtures thereof.Type: ApplicationFiled: September 29, 2018Publication date: April 4, 2019Applicant: KRATON POLYMERS LLCInventors: Jason D. Gillen, Bhavesh Shah, Jeremie Pichereau, Arwin W. van der Waal, Joris Smit
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Patent number: 8648131Abstract: Accordingly, the invention provides a process for the preparation of an artificial latex, comprising the steps: (a) emulsification of a cement comprising a rubber dissolved in a suitable organic solvent, together with an aqueous surfactant solution, thus forming an oil-in-water emulsion; (b) step-wise reduction of the solvent content of the oil-in-water emulsion in two or more stages resulting in an artificial latex. In addition, the invention provides a continuous stirred vessel for removing an organic solvent from an oil-in-water emulsion comprising rubber dissolved in an organic solvent.Type: GrantFiled: July 6, 2009Date of Patent: February 11, 2014Assignee: Kraton Polymers U.S. LLCInventors: Arwin W. van der Waal, Marc S. Sonderman, Stephen W. Bourne, Adrie A. van der Huizen, Alexandre Rodrigues da Silva, David H. Brooks
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Patent number: 8163838Abstract: A process of producing an artificial latex, comprising the steps: (a) cement formation, wherein a rubber is dissolved in a suitable hydrocarbon solvent; (b) emulsification of the cement formed in step (a), together with an aqueous soap solution, thus forming an oil-in-water emulsion; (c) hydrocarbon solvent removal, resulting in a latex of the rubber having particles of a median particle size in the range of from about 0.5 to 2.0 ?m, and optionally (d) latex concentration, forming an artificial latex with a higher solids content, characterized in that in step (b) a premix is formed first, which is subsequently homogenized into an oil-in-water emulsion, and wherein the premix is formed by mixing the cement with the aqueous soap solution at a volume ratio of 1:1.Type: GrantFiled: December 18, 2007Date of Patent: April 24, 2012Assignee: Kraton Polymers US LLCInventors: Adrie A. Van Der Huizen, Marc S. Sonderman, Arwin W. Van Der Waal, Wouter De Jong, Anton Nicolai
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Publication number: 20110112217Abstract: Accordingly, the invention provides a process for the preparation of an artificial latex, comprising the steps: (a) emulsification of a cement comprising a rubber dissolved in a suitable organic solvent, together with an aqueous surfactant solution, thus forming an oil-in-water emulsion; (b) step-wise reduction of the solvent content of the oil-in-water emulsion in two or more stages resulting in an artificial latex. In addition, the invention provides a continuous stirred vessel for removing an organic solvent from an oil-in-water emulsion comprising rubber dissolved in an organic solvent.Type: ApplicationFiled: July 6, 2009Publication date: May 12, 2011Applicant: KRATON POLYMERS U.S. LLCInventors: Arwin W. van der Waal, Marc S. Sonderman, Stephen W. Bourne, Adrie A. van der Huizen, Alexandre Rodrigues da Silva, David H. Brooks
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Publication number: 20090281211Abstract: A process of producing an artificial latex, comprising the steps: (a) cement formation, wherein a rubber is dissolved in a suitable hydrocarbon solvent; (b) emulsification of the cement formed in step (a), together with an aqueous soap solution, thus forming an oil-in-water emulsion; (c) hydrocarbon solvent removal, resulting in a latex of the rubber having particles of a median particle size in the range of from about 0.5 to 2.0 ?m, and optionally (d) latex concentration, forming an artificial latex with a higher solids content, characterized in that in step (b) a premix is formed first, which is subsequently homogenized into an oil-in-water emulsion, and wherein the premix is formed by mixing the cement with the aqueous soap solution at a volume ratio of 1:1.Type: ApplicationFiled: December 18, 2007Publication date: November 12, 2009Applicant: KRATON POLYMERS U.S. LLCInventors: Adrie A. Van Der Huizen, Marc S. Sonderman, Arwin W. Van Der Waal, Wouter De Jong, Anton Nicolai
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Publication number: 20090209698Abstract: A process for the preparation of an aqueous rubber emulsion (artificial latex), comprising the steps: (a) size reduction of the rubber, whereby granules are produces with shorter dissolving time; (b) cement formation, wherein the granules of step (a) are dissolved in a suitable hydrocarbon solvent; (c) preparation of an aqueous soap solution; (d) emulsification of the cement formed in step (b), using the aqueous soap solution prepared in step (c), thus forming an oil in water emulsion; (e) hydrocarbon solvent removal, resulting in an aqueous emulsion of the rubber, and optionally (f) emulsion concentration, forming an artificial latex with a higher solids content, wherein in step (a) the size reduction is carried out using a chopper and/or granulator characterized in that a soap is used as processing aid, preferably identical to the soap used in steps (c) and (d).Type: ApplicationFiled: March 26, 2007Publication date: August 20, 2009Applicant: KRATON POLYMERS U.S. LLCInventors: Adrie A. Van Der Huizen, Jean Furton, Arwin W. Van Der Waal