摘要:
The invention relates to a method for preparing a compound comprising at least one β-hydroxy-urethane unit and/or at least one γ-hydroxy-urethane unit, consisting in reacting a compound (A) comprising at least one cyclocarbonate reactive unit with a compound (B) comprising at least one amino reactive unit (—NH2) in the presence of a catalyst. The invention also relates to the use of a catalyst comprising at least one organometallic complex and a co-catalyst chosen from the group of Lewis bases and/or tetra-alkyl ammonium salts, in order to catalyse the method of the invention. The invention relates to the technical field of preparing urethane derivatives.
摘要:
A method for preparing a formaldehyde-free phenolic plastic resin, includes a step of preparing a hardener via careful oxidation of a polyol and a step of reacting the hardener with phenolic compounds.
摘要:
A fluorinated copolymer including at least one recurrent unit of the following formula (I): and at least one recurrent unit of the following formula (II): in which: RF represents a perfluorocarbon chain optionally including one or more oxygen atoms; X represents a halogen atom, OR with R representing a hydrogen atom or a cation; R1 represents a hydrocarbon chain or perfluorocarbon chain; and Z represents a perfluorocarbon chain.
摘要:
A fluorinated copolymer including at least one recurrent unit of the following formula (I): and at least one recurrent unit of the following formula (II): in which: RF represents a perfluorocarbon chain optionally including one or more oxygen atoms; X represents a halogen atom, OR with R representing a hydrogen atom or a cation; R1 represents a hydrocarbon chain or perfluorocarbon chain; and Z represents a perfluorocarbon chain.
摘要:
A method for preparing a formaldehyde-free phenolic plastic resin, includes a step of preparing a hardener via careful oxidation of a polyol and a step of reacting the hardener with phenolic compounds.
摘要:
The invention relates to a method for functionalizing natural fatty substances: According to said method, plant oils including at least two unsaturations and the derivatives thereof, fatty acids including at least one unsaturated compound and the derivatives thereof, and mixtures of same, are reacted with a thiol derivative of formula (I), at a temperature of between 0° C. and the temperature of total degradation of the natural fatty substance and in the presence of a thermal initiator compound or a redox initiator, or by UV radiation, or by UV radiation and in the presence of a photoinitiator. The invention also relates to the resulting functionalized fatty substances and to the use thereof for the preparation of polymers. The invention further relates to a method for preparing polymers from at least one functionalized fatty substance obtained by said functionalization method.
摘要:
The present application relates to a method for preparing epoxy resins from a mixture of epoxidized phenolic compounds, wherein said epoxidized phenolic compounds are obtained by the epoxidation of natural phenolic compounds selected from the group comprising simple phenol, acid-phenol, coumarin, naphthoquinone, stillbenoid, flavonoid, isoflavanoid, anthocyanin, condensed tannin and hydrolyzable tannin.
摘要:
The present application relates to a method for preparing epoxy resins from a mixture of epoxidized phenolic compounds, wherein said epoxidized phenolic compounds are obtained by the epoxidation of natural phenolic compounds selected from the group comprising simple phenol, acid-phenol, coumarin, naphthoquinone, stillbenoid, flavonoid, isoflavanoid, anthocyanin, condensed tannin and hydrolyzable tannin.
摘要:
The invention relates to a method for functionalizing natural fatty substances: According to said method, plant oils including at least two unsaturations and the derivatives thereof, fatty acids including at least one unsaturated compound and the derivatives thereof, and mixtures of same, are reacted with a thiol derivative of formula (I), at a temperature of between 0° C. and the temperature of total degradation of the natural fatty substance and in the presence of a thermal initiator compound or a redox initiator, or by UV radiation, or by UV radiation and in the presence of a photoinitiator. The invention also relates to the resulting functionalized fatty substances and to the use thereof for the preparation of polymers. The invention further relates to a method for preparing polymers from at least one functionalized fatty substance obtained by said functionalization method.
摘要:
A sheet of vegetable wool fiber is impregnated with a reactive mix made up of a partially or completely epoxidized vegetable oil and a hardener. The sheet can also be included in a panel. The method for manufacturing the sheet includes mixing an epoxidized vegetable oil and a hardener at a temperature higher than each one of the melting temperatures thereof and lower than each one of the breakdown temperatures thereof; and depositing the obtained mix on an assembly of vegetable wool fibers at a temperature higher than each one of the melting temperatures thereof and lower than each one of the breakdown temperatures thereof.