Patents by Inventor Dakai Ren
Dakai Ren 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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Publication number: 20240262951Abstract: The present invention provides all liquid, two-component foam forming compositions for forming fire-resistant rigid polyurethane foams comprising a chlorine-free liquid flame retardant (FR) additive. The compositions comprise a polyisocyanate component and, as a separate component, a polyol component of a blend of one or more high hydroxyl functional aromatic polyester polyols and one or more low hydroxyl functional aromatic polyester polyols, a novolac polyether polyol, a trimerization catalysts, a liquid FR additive, preferably, one FR additive, more preferably, a halogen free FR additive, and water, or water and a physical blowing agent as a blowing agent. The low hydroxyl functional aromatic polyester polyols enable the provision of readily processible, all liquid polyol components having a low viscosity as well as ASTM E84A Class A rated rigid polyurethane foams.Type: ApplicationFiled: October 24, 2022Publication date: August 8, 2024Inventors: Alvaro Ballesteros Cardenas, Omar Hernandez Muñoz, Dakai Ren, Adebola O. Ogunniyi
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Publication number: 20230250216Abstract: A composition for preparing a foamed polyurethane article is disclosed. The composition comprises (1) an isocyanate-reactive component and (2) an isocyanate component. The (1) isocyanate-reactive component comprises (A) an organopolysiloxane having an average of at least two carbinol functional groups per molecule and (B) a polyol. The (A) organopolysiloxane is present in an amount of from > 10 to < 99 wt.% based on the combined weight of the (A) organopolysiloxane and the (B) polyol. The (2) isocyanate component comprises (C) a polyisocyanate. The composition further comprises (D) a blowing agent, and (E) a catalyst. A foamed polyurethane article comprising the reaction product of the composition is also disclosed, along with use of the foamed polyurethane article.Type: ApplicationFiled: May 21, 2021Publication date: August 10, 2023Inventors: Abhishek SHETE, Kaoru AOU, Dakai REN, William A. KOONCE, Adam L. GRZESIAK, James YOUNG, Jr., Sachit GOYAL
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Patent number: 11674010Abstract: A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.Type: GrantFiled: January 25, 2022Date of Patent: June 13, 2023Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLCInventors: Kali Ananth Suryadevara, Mark W. Beach, Dakai Ren
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Publication number: 20220411599Abstract: A foam-forming composition for producing a rigid polyurethane foam including: (a) at least one isocyanate component; and (b) at least one isocyanate-reactive composition including: (bi) a rigid polyol compound; and (bii) a flexible polyol compound; (c) a catalyst package including at least one latent gelling catalyst; and (d) at least one blowing agent.Type: ApplicationFiled: February 15, 2021Publication date: December 29, 2022Inventors: Dakai Ren, William J. Harris
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Publication number: 20220282024Abstract: The present disclosure provides for a metal chelated polyol liquid and/or a metal chelated polyether polyol liquid that can be used in an isocyanate-reactive composition and a reaction mixture for forming a polyurethane polymer. The metal chelated polyester polyol liquid is a reaction product of a chelating polyester polyol having a chelating moiety and a metal compound having a metal ion. The metal chelated polyether polyol liquid is a reaction product of a chelating polyether polyol having a chelating moiety and a metal compound having a metal ion. The chelating moiety of the chelating polyester polyol or the chelating polyether polyol chelates the metal ion to form the metal chelated polyester polyol liquid or the metal chelated polyether polyol liquid, respectively, having a mole ratio of the metal ion to the chelating moiety of 0.05:1 to 2:1.Type: ApplicationFiled: July 7, 2020Publication date: September 8, 2022Applicant: Dow Global Technologies LLCInventors: William J. Harris, Dakai Ren, Stephen W. King, Xue Chen
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Publication number: 20220275142Abstract: The present disclosure provides for a liquid transition metal chelating polyol blend that can be used in an isocyanate-reactive composition and a reaction mixture for forming a polyurethane polymer. The liquid transition metal chelating polyol blend includes a polyol, a transition metal compound having a transition metal ion and a chelating agent having a nitrogen based chelating moiety, where the liquid transition metal chelating polyol blend has a molar ratio of nitrogen in the nitrogen based chelating moiety to the transition metal ion of 8:1 to 1:1 (moles nitrogen:moles of transition metal ion).Type: ApplicationFiled: July 8, 2020Publication date: September 1, 2022Applicant: Dow Global Technologies LLCInventors: Dakai Ren, William J. Harris, Brad C. Bailey
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Publication number: 20220267510Abstract: The present disclosure provides for an isocyanate-reactive composition that can react with an isocyanate compound in a reaction mixture to form a polyurethane-based foam. The isocyanate-reactive composition includes an isocyanate reactive compound and a combustion modifier composition. The isocyanate reactive compound has an isocyanate reactive moiety and an aromatic moiety. The combustion modifier composition includes both phosphorus from a halogen-free flame-retardant compound and a transition metal from a transition metal compound. The combustion modifier composition can have a molar ratio of the transition metal to phosphorus (mole transition metal:mole phosphorous) of 0.05:1 to 5:1.Type: ApplicationFiled: July 9, 2020Publication date: August 25, 2022Applicant: Dow Global Technologies LLCInventors: Dakai Ren, Luigi Bertucelli, Weijun Zhou, Eddy I. Garcia-Meitin, Yiqun Zhang, William J. Harris
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Publication number: 20220145032Abstract: A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.Type: ApplicationFiled: January 25, 2022Publication date: May 12, 2022Inventors: Kali Ananth Suryadevara, Mark W. Beach, Dakai Ren
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Patent number: 11192335Abstract: An article contains a polymeric foam board having a primary surface and an intumescent coating on a primary surface of the polymeric foam board, the intumescent coating containing a polymeric binder, expandable graphite particles, a phosphorous material and a boron-containing compound and wherein the article is free of an object that is in contact with the intumescent coating and that sandwiches the intumescent coating between it and the polymeric foam board and wherein the intumescent coating has a tensile elongation of at least 50 percent and less than 100 percent at 23 degrees Celsius as measured according to ISO 37, has a storage modulus of less than 1×106 Pascals at 250 degrees Celsius, is halogen-free, free of sodium silicate, free of polyurea elastomer, and free of formals of pentaerythritol and dipentaerythritol.Type: GrantFiled: January 16, 2017Date of Patent: December 7, 2021Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLCInventors: Xiaomei Song, Dakai Ren, Hongyu Chen, Jeffrey M. Alcott, Mark A. Barger, Yi Zhang, Ernest J. Herst
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Patent number: 11180666Abstract: An intumescent coating system contains: a polyol component; an isocyanate component; a latent crosslinker having two or more —NACH2OR groups, where A is selected from a group consisting of H and —CH2OR, and in each case R is independently selected from a group consisting of hydrocarbons having from one to four carbons, the latent crosslinker being present at a concentration of 30 weight-percent or more based on polyol weight; a boron component one weight-percent or more and 10 weight-percent or less based on total weight of the formulation; and expandable graphite at a concentration of 10 weight-percent or more and 50 weight-percent or less based on the total intumescent system weight; where the polyol and isocyanate are selected so that the reaction product at room temperature of the intumescent coating system components produces a coating having a tensile elongation of 40-percent or more as determined according to ISO 37.Type: GrantFiled: March 14, 2017Date of Patent: November 23, 2021Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLCInventors: Xiaomei Song, Dakai Ren, Hongyu Chen, Yi Zhang
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Patent number: 11135813Abstract: A fire retardant article has a wood-based material with a polyisocyanurate foam article attached thereto, where the polyisocyanurate foam article covers 90% or more of the exposed portion of the wood-based material, has a thickness greater than 1.8 centimeters, a foam core having a density of 28-128 kg/m3, a trimer concentration characterized by at least one of (i) a trimer level in a range of 12-25 weight-percent and (ii) a molar ratio of trimer to sum of urethane and urea in a range of 1-8, a phosphorous concentration of at least 0.3 wt %, a combined concentration of phosphorous and bromine of at least 0.5 wt %, and a vapor permeable and non-combustible facer on at least one primary surface of the foam core.Type: GrantFiled: July 31, 2017Date of Patent: October 5, 2021Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLCInventors: Gregory T. Stewart, Matthew J. Kalinowski, Kshitish A. Patankar, Dakai Ren, Steven P. Crain, Ernest J. Herst, Daniel W. Cheney, Jeffrey K Olson, Tyler G. Congleton
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Patent number: 10703890Abstract: Crosslinkable interpolymer blends comprising ethylene monomer residues, residues of comonomers having carboxylic acid and/or carboxylic acid anhydride functionality, and residues of comonomers having epoxide functionality, a peroxide initiator, and optionally a crosslinking catalyst, which, in embodiments, cure to a gel content of greater than (>) 50 wt % within less than 1.5 minutes at 200˜C, and require little or no degassing after crosslinking.Type: GrantFiled: June 29, 2015Date of Patent: July 7, 2020Assignee: Dow Global Technologies LLCInventors: Dakai Ren, Kyoung moo Koh, Thomas H. Peterson, Tanya N Singh-Rachford, Mark A. Rickard, Jeffrey M. Cogen, Yabin Sun
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Publication number: 20200189241Abstract: A fire retardant article has a wood-based material with a polyisocyanurate foam article attached thereto, where the polyisocyanurate foam article covers 90% or more of the exposed portion of the wood-based material, has a thickness greater than 1.8 centimeters, a foam core having a density of 28-128 kg/m3, a trimer concentration characterized by at least one of (i) a trimer level in a range of 12-25 weight-percent and (ii) a molar ratio of trimer to sum of urethane and urea in a range of 1-8, a phosphorous concentration of at least 0.3 wt %, a combined concentration of phosphorous and bromine of at least 0.5 wt %, and a vapor permeable and non-combustible facer on at least one primary surface of the foam core.Type: ApplicationFiled: July 31, 2017Publication date: June 18, 2020Inventors: Gregory T. Stewart, Matthew J. Kalinowski, Kshitish A. Patankar, Dakai Ren, Steven P. Crain, Ernest J. Herst, Daniel W. Cheney, Jeffrey K Olson, Tyler G. Congleton
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Publication number: 20200002552Abstract: An intumescent coating system contains: a polyol component; an isocyanate component; a latent crosslinker having two or more —NACH2OR groups, where A is selected from a group consisting of H and —CH2OR, and in each case R is independently selected from a group consisting of hydrocarbons having from one to four carbons, the latent crosslinker being present at a concentration of 30 weight-percent or more based on polyol weight; a boron component one weight-percent or more and 10 weight-percent or less based on total weight of the formulation; and expandable graphite at a concentration of 10 weight-percent or more and 50 weight-percent or less based on the total intumescent system weight; where the polyol and isocyanate are selected so that the reaction product at room temperature of the intumescent coating system components produces a coating having a tensile elongation of 40-percent or more as determined according to ISO 37.Type: ApplicationFiled: March 14, 2017Publication date: January 2, 2020Inventors: Xiaomei Song, Dakai Ren, Hongyu Chen, Yi Zhang
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Publication number: 20180355140Abstract: An article contains a polymeric foam board having a primary surface and an intumescent coating on a primary surface of the polymeric foam board, the intumescent coating containing a polymeric binder, expandable graphite particles, a phosphorous material and a boron-containing compound and wherein the article is free of an object that is in contact with the intumescent coating and that sandwiches the intumescent coating between it and the polymeric foam board and wherein the intumescent coating has a tensile elongation of at least 50 percent and less than 100 percent at 23 degrees Celsius as measured according to ISO 37, has a storage modulus of less than 1×106 Pascals at 250 degrees Celsius, is halogen-free, free of sodium silicate, free of polyurea elastomer, and free of formals of pentaerythritol and dipentaerythritol.Type: ApplicationFiled: January 16, 2017Publication date: December 13, 2018Inventors: Xiaomei Song, Dakai Ren, Hongyu Chen, Jeffrey M. Alcott, Mark A. Barger, Yi Zhang, Ernest J. Herst
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Publication number: 20180163034Abstract: Crosslinkable interpolymer blends comprising ethylene monomer residues, residues of comonomers having carboxylic acid and/or carboxylic acid anhydride functionality, and residues of comonomers having epoxide functionality, a peroxide initiator, and optionally a crosslinking catalyst, which, in embodiments, cure to a gel content of greater than (>) 50 wt % within less than 1.Type: ApplicationFiled: June 29, 2015Publication date: June 14, 2018Inventors: Dakai Ren, Kyoung moo Koh, Thomas H. Peterson, Tanya N. Singh-Rachford, Mark A. Rickard, Jeffrey M. Cogen, Yabin Sun
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Patent number: 9840070Abstract: A heat-curable structural adhesive includes a non-rubber-modified epoxy resin, a reaction product of a carboxyl-or amine-terminated butadiene polymer or copolymer and a bisphenol F-based epoxy resin, a elastomeric toughener containing capped isocyanate groups, one or more epoxy curing agents a moisture scavenger and a heat activatable catalyst comprising a mixture of a solid or liquid tertiary amine compound that has a boiling temperature of at least 130° C. and a novolac resin. The structural adhesive develops excellent bonding properties when cured at moderate temperatures, especially from 120 to 170° C., and in addition performs very well in environmental aging stress testing. The adhesive is particularly good for bonding aluminum to another metal, or bonding aluminum to aluminum.Type: GrantFiled: March 22, 2013Date of Patent: December 12, 2017Assignee: Dow Global Technologies LLCInventors: Gary L. Jialanella, Glenn G. Eagle, Dakai Ren, Andreas Lutz
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Publication number: 20170197397Abstract: A heat-curable structural adhesive includes a non-rubber-modified epoxy resin, a reaction product of a carboxyl- or amine-terminated butadiene polymer or copolymer and a bisphenol F-based epoxy resin, a elastomeric toughener containing capped isocyanate groups, one or more epoxy curing agents a moisture scavenger and a heat activatable catalyst comprising a mixture of a solid or liquid tertiary amine compound that has a boiling temperature of at least 130° C. and a novolac resin. The structural adhesive develops excellent bonding properties when cured at moderate temperatures, especially from 120 to 170° C., and in addition performs very well in environmental aging stress testing. The adhesive is particularly good for bonding aluminum to another metal, or bonding aluminum to aluminum.Type: ApplicationFiled: March 27, 2017Publication date: July 13, 2017Inventors: Gary L. Jialanella, Glenn G. Eagle, Dakai Ren, Andreas Lutz
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Publication number: 20150001281Abstract: A heat-curable structural adhesive includes a non-rubber-modified epoxy resin, a reaction product of a carboxyl- or amine-terminated butadiene polymer or copolymer and a bisphenol F-based epoxy resin, a elastomeric toughener containing capped isocyanate groups, one or more epoxy curing agents a moisture scavenger and a heat activatable catalyst comprising a mixture of a solid or liquid tertiary amine compound that has a boiling temperature of at least 130° C. and a novolac resin. The structural adhesive develops excellent bonding properties when cured at moderate temperatures, especially from 120 to 170° C., and in addition performs very well in environmental aging stress testing. The adhesive is particularly good for bonding aluminum to another metal, or bonding aluminum to aluminum.Type: ApplicationFiled: March 22, 2013Publication date: January 1, 2015Inventors: Gary L. Jialanella, Glenn G. Eagle, Dakai Ren, Andreas Lutz
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Publication number: 20140329091Abstract: Interpolymer blends or terpolymers comprising ethylene monomer residues, residues of comonomers having carboxylic acid and/or carboxylic acid anhydride functionality, and residues of comonomers having epoxide functionality. Such interpolymer blends or terpolymers are cross-linkable materials suitable for use in cable polymeric coating applications and require little or no degassing after cross-linking.Type: ApplicationFiled: December 21, 2012Publication date: November 6, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Jeffrey M. Cogen, Thomas H. Peterson, Kyoung M. Koh, John J. Yang, Dakai Ren, Tanya Singh Rachford, Yabin Sun