Process for the stabilization of spherically polymerized polyolefins
US4708979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Apr 25, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Spherically polymerized polyolefins can be advantageously stabilized by being treated with at least one emulsion or dispersion containing a stabilizer or a mixture of stabilizers and an amine of formula I ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.20 alkyl which may be substituted by --OH, or is C.sub.3 -C.sub.50 alkyl which is interrupted by one or more oxygen atoms, or is C.sub.1 -C.sub.8 alkoxy, and each of R.sub.2 and R.sub.3 independently of the other is hydrogen or has one of the meanings indicated for R.sub.1, or R.sub.2 and Rphd 3, together with the nitrogen atom to which they are attached, form a 5- to 7-membered heterocyclic ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.