Process for recovering noble products in a process for producing dialkylaminoalkyl (meth) acrylates
US9359287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2012 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Sep 11, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C227/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for recovery of noble products from heavy (meth)acrylic fractions generated during production of (meth)acrylic esters by transesterification, the heavy fractions comprising at least noble products and Michael adducts, the process comprising the steps of: (i) adding at least one antifouling agent and optionally a viscosity-reducing compound to the heavy fractions; (ii) submitting the mixture to temperature and distillation conditions sufficient to crack the Michael adducts into their components; and (iii) recovering the noble products in the form of a stream of distillate, and of a final residue that is sufficiently fluid to be transported by pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.