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公开(公告)号：US11926739B2
公开(公告)日：2024-03-12
申请号：US17385000
申请日：2021-07-26
IPC分类号： C08L97/00 , C07G1/00 , C08G18/12 , C08G18/18 , C08G18/42 , C08G18/48 , C08G18/64 , C08G18/76 , C08G101/00 , C08H7/00 , C08J9/14 , C08K3/22 , C08K3/30 , C08K3/32 , C08K5/00 , C08K5/521
CPC分类号： C08L97/005 , C07G1/00 , C08G18/12 , C08G18/18 , C08G18/4208 , C08G18/4837 , C08G18/6492 , C08G18/7657 , C08H6/00 , C08J9/141 , C08K3/22 , C08K3/30 , C08K3/32 , C08K5/0066 , C08K5/521 , C08G2101/00 , C08G2110/0025 , C08J2201/026 , C08J2203/14 , C08J2205/10 , C08J2375/06 , C08J2375/12 , C08K2003/2248 , C08K2003/3045 , C08K2003/321
摘要： Modified lignin products, processes for making them, and their use to produce rigid polyurethane or polyisocyanurate foams are disclosed. The processes comprise heating a lignin source with a nitrogen source and a starved concentration of a C1-C5 aldehyde to give a reaction mixture comprising a Mannich condensation product, neutralizing the reaction mixture, and isolating the modified lignin product. The process is performed at a mass ratio of lignin source to nitrogen source within the range of 1:1 to 1:5 and at a molar ratio of nitrogen source to C1-C5 aldehyde within the range of 3.5:1 to 1:1. Polyol blends and performance additives that contain the modified lignin products are described. Rigid foams that process well and incorporate up to 60 wt. %, based on the amount of polyol component, of the modified lignin contribute to excellent flame retardancy and low-temperature R-value performance.
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公开(公告)号：US20220267502A9
公开(公告)日：2022-08-25
申请号：US17396669
申请日：2021-08-07
发明人： Thomas M. Garrett , Xian Xian Du
摘要： Soy-based high temperature products, or thermoset resins, are produced by solvent free polymerization of soy polyols and polyisocyanates at room temperature. The ratio of isocyanate equivalents to polyol equivalent used in the synthesis is greater than or equal to 3. The invented soy-based products are polyisocyanurate solid materials with excellent stability at high temperature. Heat resistance of the material is influenced by ratio of soy polyol and polyisocyanate.
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公开(公告)号：US20220127408A1
公开(公告)日：2022-04-28
申请号：US17396669
申请日：2021-08-07
发明人： Thomas M. Garrett , Xian Xian Du
摘要： Soy-based high temperature products, or thermoset resins, are produced by solvent free polymerization of soy polyols and polyisocyanates at room temperature. The ratio of isocyanate equivalents to polyol equivalent used in the synthesis is greater than or equal to 3. The invented soy-based products are polyisocyanurate solid materials with excellent stability at high temperature. Heat resistance of the material is influenced by ratio of soy polyol and polyisocyanate.
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