# US 8,784,680 B2 · Bioresin composition for use in forming a rigid polyurethane foam article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,784,680 B2 - Document ID: US8784680B2 - Status: Granted - Kind: B2 - Application number: 13/899,202 - Filed: 2013-05-21 - Published: 2013-09-26 - Granted: 2014-07-22 - Earliest claimed: 2009-06-11 - Assignees: BASF SE - Applicants: BASF SE - Inventors: Christopher M. Tanguay; Patrick J. Watters; John P. Erickson; Eric W. Banks - Web page: https://patentgrep.com/patent/US8784680B2 ## CPC - C08G 18/3203: {Polyhydroxy compounds} - C08G 18/3218: {containing cyclic groups having at least one oxygen atom in the ring} - C08G 18/36: Hydroxylated esters of higher fatty acids - C08G 18/6696: {with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38} - C08G 18/7664: {containing alkylene polyphenyl groups} - C08G 2110/0025: rigid - C08G 2110/0083: prepared using water as the sole blowing agent - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ## Abstract A bioresin composition is used to form a rigid polyurethane article that includes a first and a second biopolyol and is substantially free of aprotic solvents that chemically decompose in the presence of water. The first biopolyol includes a natural oil component. The second biopolyol includes the reaction product of a natural carbohydrate and an alkylene oxide. The rigid polyurethane foam article includes the reaction product of the bioresin composition and an isocyanate which are reacted in the presence of a chemical blowing agent. ## Claims ### Claim 1 A bioresin composition substantially free of aprotic solvents that chemically decompose in the presence of water, said bioresin composition comprising: (A) a first biopolyol comprising a natural oil component, said first biopolyol having: (a) a nominal functionality of at least 2.5, (b) a hydroxyl number of from about 375 to about 575 mg KOH/g, and (c) a viscosity of from about 500 cps to about 1500 cps at 77° F., (B) a second biopolyol comprising the reaction product of a natural carbohydrate and an alkylene oxide, wherein said second biopolyol and said first biopolyol are present in a weight ratio of greater than 1:1 to about 3:1, and (C) an aprotic solvent that does not chemically decompose in the presence of water. ### Claim 2 (depends on 1) A bioresin composition as set forth in claim 1 wherein said second biopolyol and said first biopolyol are present in a weight ratio of greater than 1:1 to about 2.5:1. ### Claim 3 (depends on 1) A bioresin composition as set forth in claim 1 wherein said natural oil component comprises one or more natural oils comprising triglycerides, the reaction product of one or more natural oils comprising triglycerides and a compound reactive with said natural oil, and combinations thereof. ### Claim 4 (depends on 3) A bioresin composition as set forth in claim 3 wherein said natural oil is selected from the group of canola oil, castor oil, peanut oil, corn oil, soy oil, other vegetable oils, and combinations thereof. ### Claim 5 (depends on 3) A bioresin composition as set forth in claim 3 wherein said natural oil is soy oil. ### Claim 6 (depends on 1) A bioresin composition as set forth in claim 1 wherein said natural carbohydrate is selected from the group of a sacharose, sugar alcohol and combinations thereof. ### Claim 7 (depends on 6) A bioresin composition as set forth in claim 6 wherein said sugar comprises a disaccharide and said sugar alcohol comprises a triglyceride. ### Claim 8 (depends on 7) A bioresin composition as set forth in claim 7 wherein said disaccharide is sacharose. ### Claim 9 (depends on 7) A bioresin composition as set forth in claim 7 wherein said triglyceride is glycerin. ### Claim 10 (depends on 8) A bioresin composition as set forth in claim 8 wherein said second biopolyol has a nominal functionality of at least 4, a hydroxyl number of from about 360 to about 375 mg KOH/g, and a viscosity of from about 3000 cps to about 4000 cps at 77° F. ### Claim 11 (depends on 1) A bioresin composition as set forth in claim 1 further comprising a supplemental polyol that is different than said first and second biopolyols and is not a biopolyol. ### Claim 12 (depends on 11) A bioresin composition as set forth in claim 11 wherein said supplemental polyol is present in an amount no greater than about 20 parts by weight based on 100 parts by weight of said bioresin composition. ### Claim 13 (depends on 1) A bioresin composition as set forth in claim 1 wherein said aprotic solvent that does not chemically decompose in the presence of water is selected from the group of dimethyl sulfoxide, dimethylformamide, dioxane, hexamethylphosphorotriamide, tetrahydrofuran, triethyl phosphate, and combinations thereof. ### Claim 14 (depends on 1) A bioresin composition as set forth in claim 1 wherein said aprotic solvent that does not chemically decompose in the presence of water is triethyl phosphate. ### Claim 15 (depends on 1) A bioresin composition as set forth in claim 1 further comprising a fatty acid as a cell opening agent. ### Claim 16 (depends on 15) A bioresin composition as set forth in claim 15 wherein said fatty acid is oleic acid. ### Claim 17 (depends on 15) A bioresin composition as set forth in claim 15 wherein said cell opening agent is present in an amount of from about 0.1 to about 11 parts by weight based on 100 parts by weight of said bioresin composition.