Process for the preparation of polylactones and polylactams
US8883957B2 · kind B2 · utility
1Cited by
16References
19Claims
0Family size
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Key dates
| Filing date | Feb 15, 2008 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jun 5, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the preparation of a lactone or lactam homopolymer, comprising the stage consisting in reacting a lactone or lactam with a nonpolymeric initiator comprising at least one hydroxyl or thiol functional group in a nonchlorinated solvent in the presence of a sulfonic acid of formula R—SO3H.It also relates to the polymer composition thus obtained and to its uses, in particular as antistatic additive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.