Recovery of Valuable Chlorosilane Intermediates by a Novel Waste Conversion Process
From 1994 to 2001, Dow Corning studied a waste recycling process to recover direct process residues (DPR) resulting from the production of silicone precursors. Over the course of eight years, Dow Corning constructed and operated a pilot plant, a small scale commercial plant, and a full scale plant. The process reacts DPR with hydrogen and chlorosilane monomers at high temperature and high pressure. The process converted 85% of the DPR to valuable chlorosilane monomers such as dimethyldichlorosilane and methyldichlorosilane. When feeding methyltrichlorosilane, the process converted 30% of the MeSiCl3 to other monomers. Alternate co-feed monomers were tested. By converting waste DPR to valuable intermediates, the technology significantly reduces waste from the basic silicones manufacturing process.
- Research Organization:
- Dow Corning Corporation (US)
- Sponsoring Organization:
- USDOE Office of Industrial Technologies (OIT) (EE-20) (US)
- DOE Contract Number:
- FC04-94AL99566
- OSTI ID:
- 795522
- Report Number(s):
- DOE/AL/99566-4; TRN: US200212%%282
- Resource Relation:
- Other Information: PBD: 20 Jun 2002
- Country of Publication:
- United States
- Language:
- English
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