Abstract:
PROBLEM TO BE SOLVED: To provide vegetable oil-based polyols useful in production of soft polyurethane foam. SOLUTION: Polyols useful in production of polyurethane are disclosed. The polyols are produced by reacting a vegetable oil-based (hydroxymethyl-containing) monomer with polyol, polyamine or aminoalcohol initiator under vacuum. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
Hybrid polyester-polyether polyols are prepared by polymerizing an alkylene oxide in the presence of a carboxylate initiator. The polymerization is catalyzed with a mixture of double metal cyanide catalyst complex and certain magnesium, group 3 - group 15 metal or lanthanide series metal compounds.
Abstract:
Copolymers of propylene oxide and ethylene oxide have an inner block that contains from 65-90 weight percent oxyethylene units and from 10 to 35 weight percent oxypropylene units. This block has a molecular weight of from 150 to 350. The copolymer has an outer block which contains at least 95 weight % oxypropylene units and from 0 to 5% oxyethylene units. The equivalent weight of the copolymer is from 800 to 2000. The copolymers are useful in making polyurethane foams that have unexpectedly high tensile and/or tear strengths.
Abstract:
Un proceso para decolorar un poliol basado en aceites naturales, el proceso que comprende la etapa de exponerel poliol a la radiación actínica de una longitud de onda de 250 a 550 nanómetros.
Abstract:
Copolymers of propylene oxide and ethylene oxide have an inner block that contains from 65-90 weight percent oxyethylene units and from 10 to 35 weight percent oxypropylene units. This block has a molecular weight of from 150 to 350. The copolymer has an outer block which contains at least 95 weight % oxypropylene units and from 0 to 5% oxyethylene units. The equivalent weight of the copolymer is from 800 to 2000. The copolymers are useful in making polyurethane foams that have unexpectedly high tensile and/or tear strengths.