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1.发明公开
公开(公告)号：EP4458831A1
公开(公告)日：2024-11-06
申请号：EP23461573.0
申请日：2023-05-05
发明人： SWIST, Agnieszka
IPC分类号： C07F9/142
摘要： The invention relates to a method of transesterification of phosphites using alcohol in the presence of a fluoride alkaline catalyst allowing to obtain liquid organic phosphites with ultra-low phenol content and low volatility. Trialkyl phosphites obtainable by the method of the present invention, are used e.g. as additives to lubricants or as auxiliary stabilisers in the processing of various plastics, including those based on polyurethane and poly(vinyl chloride).
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2.发明公开
公开(公告)号：EP4365158A1
公开(公告)日：2024-05-08
申请号：EP23205718.2
申请日：2023-10-25
摘要： Benzene and/or monochlorobenzene were chlorinated with molecular chlorine to obtain paradichlorobenzene with high selectivity. A batch reactor was used for this purpose, with a highly selective catalytic system consisting of SbCl3 and a phenothiazine derivative. The entire process was improved with the introduction of a new catalytic system recovery method, which was based on returning the mother liquid containing the catalytic system to the process after prior separation from the fresh post-reaction mixture by distillation of unreacted raw materials under reduced pressure and recycling them, as well as crystallization of paradichlorobenzene from the depleted liquid after vacuum distillation. The invention has a significant effect on improving the economics of the entire process.
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3.发明公开
公开(公告)号：EP4279534A1
公开(公告)日：2023-11-22
申请号：EP22461551.8
申请日：2022-05-20
摘要： A method for producing low unsaturation level oxyalkylates, characterised in that it comprises the steps of:
a. preparation of an initial feed containing the first starter and a double metal cyanide type (DMC) catalyst, wherein the initial feed is dried and heated to a reaction temperature from 115 to 145 °C;
b. activation of the DMC catalyst by dosing to the initial feed an alkylene oxide or alkylene oxides mixture in an amount from 5 to 20% by weight of the initial feed;
c. polyaddition of alkylene oxide or alkylene oxides mixture to a first starter in the presence of an activated DMC catalyst, wherein a low molecular weight second starter with a functionality lower than the first starter is simultaneously dosed together with the alkylene oxide stream or alkylene oxides mixture; wherein under the reaction conditions the polyaddition of the alkylene oxide or alkylene oxides mixture occurs simultaneously to the first starter from the initial feed and to the low molecular weight second starter;
d. heating the mixture of oxyalkylates at reaction temperature until constant pressure is achieved, and subsequently conducting degassing process to remove volatiles.-
公开(公告)号：EP4458832A1
公开(公告)日：2024-11-06
申请号：EP23461574.8
申请日：2023-05-05
摘要： The invention relates to a method for phosphite transesterification in the presence of a fluoride alkaline catalyst using aliphatic alcohols, allowing for a transesterification product to be obtained with a platinum-cobalt colour in the range of 0 to 150, as determined by a visual method according to ASTM D1209-05(2019). Phosphites, obtained by the inventive method, are used in plastics processing as secondary stabilisers, ensuring high thermal and process stability of plastics, mainly those based on poly(vinyl chloride).
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公开(公告)号：EP4230680A1
公开(公告)日：2023-08-23
申请号：EP22461504.7
申请日：2022-02-18
发明人： WACEK, Jerzy , WOJDYLA, Henryk
摘要： The invention relates to a process for obtaining a polyether polyol with a bimodal molecular weight distribution, intended for the production of flexible polyurethane foams, in particular of soft, hypersoft and thermoplastic types. The process according to the invention comprises two successive steps, wherein in the first step, the polyaddition of alkylene oxides to a starter is carried out in the presence of a catalyst, and in the second step, the polyaddition of alkylene oxides to a mixture of the polymer formed in the first step and a second portion of the starter is carried out, also in the presence of a catalyst. Furthermore, the invention relates to a polyether polyol with a bimodal molecular weight distribution and its use in the production of soft-, hypersoft- and thermoplastic-type flexible polyurethane foams.
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公开(公告)号：EP4219577A1
公开(公告)日：2023-08-02
申请号：EP22461502.1
申请日：2022-01-27
IPC分类号： C08G18/18 , C08G18/20 , C08G18/24 , C08G18/30 , C08G18/32 , C08G18/48 , C08G18/66 , C08G18/76
摘要： The invention relates to a polyether polyol composition for preparing viscoelastic polyurethane foams, comprising the following: at least one polyether polyol with a hydroxyl number of 300 to 600 mgKOH/g, a functionality of 2 to 6 and an ethylene oxide content of up to 20% based on the total polyoxyalkylene oxide content, at least one polyether polyol with a hydroxyl number of 150 to 300 mgKOH/g, a functionality of 2 to 6 and an ethylene oxide content of up to 20% based on the total polyoxyalkylene oxide content; at least one polyether polyol with a hydroxyl number of 100 to 300 mgKOH/g, a functionality of 2 to 6 and an ethylene oxide content of more than 50% based on the total polyoxyalkylene oxide content; at least one polyether polyol with a hydroxyl number of 20 to 60 mgKOH/g, a functionality of less than 3 and an ethylene oxide content of 30 to 60% based on the total polyoxyalkylene oxide content; and optionally propanetriol, at least one polyether polyol with a hydroxyl number of 20 to 60 mgKOH/g, a functionality of less than 3 and an ethylene oxide content of up to 40% based on the total polyoxyalkylene oxide content and/or at least one polyether polyol with a hydroxyl number of 20 to 60 mgKOH/g, a functionality of 2 to 6 and an ethylene oxide content of up to 20% based on the total polyoxyalkylene oxide content. Furthermore, the invention relates to a method for producing a viscoelastic polyurethane foam and a foam thus produced.
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