Invention Grant
- Patent Title: Unsaturated dicarboxylic acids from unsaturated cyclic hydrocarbons and acrylic acid by way of metathesis, the use thereof as monomers for polyamides, polyesters and polyurethanes, and subsequent reaction to diols and diamines
- Patent Title (中): 不饱和二羧酸由不饱和环烃和丙烯酸通过复分解，其用作聚酰胺，聚酯和聚氨酯的单体，随后与二醇和二胺的反应
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Application No.: US12865018Application Date: 2009-04-17
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Publication No.: US08445720B2Publication Date: 2013-05-21
- Inventor: Peter Hannen , Martin Roos , Harald Haeger
- Applicant: Peter Hannen , Martin Roos , Harald Haeger
- Applicant Address: DE Essen
- Assignee: Evonik Degussa GmbH
- Current Assignee: Evonik Degussa GmbH
- Current Assignee Address: DE Essen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102008002090 20080530
- International Application: PCT/EP2009/054599 WO 20090417
- International Announcement: WO2009/144094 WO 20091203
- Main IPC: C07C57/13
- IPC: C07C57/13
Abstract:
The invention relates to a method for producing α,β-unsaturated dicarboxylic acids and the corresponding saturated dicarboxylic acids, whereby the corresponding cycloalkene and acrylic acid are reacted with a ruthenium catalyst by way of a metathesis reaction at high substrate concentrations until the reaction takes place in substance, the resulting dicarboxylic acid being precipitated.
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