- 专利标题: METHOD TO OBTAIN METHYLENE MALONATE VIA BIS(HYDROXYMETHYL) MALONATE PATHWAY
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申请号: US14636402申请日: 2015-03-03
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公开(公告)号: US20150218081A1公开(公告)日: 2015-08-06
- 发明人: Bernard Miles Malofsky , Adam Gregg Malofsky , Jeffrey M. Sullivan , Philip B. Kisanga , John Joseph Anderson , Michael Charles Milner Cockrem , Philip Jay Carlberg
- 申请人: Sirrus, Inc.
- 主分类号: C07C67/327
- IPC分类号: C07C67/327 ; C07C67/56 ; B01J29/40 ; C07C67/31 ; C07C69/593
摘要:
Method to obtain methylene malonate and related monomers following a bis(hydroxymethyl) malonate pathway. A bis(hydroxymethyl) malonate intermediary is subsequently reacted (i.e., subjected to thermolysis) to provide a methylene malonate monomer species. A source of formaldehyde (e.g., formalin) is provided in the presence of a basic catalyst (e.g., calcium hydroxide), to which a malonate (e.g., diethyl malonate) is added under suitable reaction conditions to obtain the desired intermediary (e.g., dialkyl bis(hydroxymethyl) malonate). The intermediary is reacted (i.e., subjected to thermolysis) under suitable conditions in the presence of a suitable catalyst (e.g., a zeolite) to obtain a methylene malonate monomer. In an exemplary embodiment, the thermolysis reaction includes the addition of the bis(hydroxymethyl) malonate intermediary onto a heated catalyst. The reaction product is collected and purified. The disclosed methods may be performed in a continuous operation. Discrete steps may be performed by using modular units within a plant.
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