Back to results
US 10,106,656 B2Granted
Anti-agglomerants for polyisobutylene production
AssigneeArlanxeo Canada Inc.
InventorsDavid Thompson, Clinton Lund
Life of this patent
Estimating the term…
Abstract
The invention relates to a method to reduce or prevent agglomeration of polyisobutylene particles in aqueous media by LCST compounds and highly pure polyisobutylenes obtained thereby. The invention further relates to polyisobutylene products comprising the same or derived therefrom.
Claims25
A process for preparing an aqueous slurry comprising a plurality of polyisobutylene particles suspended therein, the process comprising:
- contacting an organic medium comprising
- i) polyisobutylene and
- ii) an organic diluent
- with an aqueous medium comprising at least one cellulose compound selected from the group consisting of an alkylcellulose, a hydroxyalkylcellulose, a hydroxyalkylalkylcellulose, and a carboxyalkylcellulose;
- and
- removing at least partially the organic diluent to obtain the aqueous slurry comprising the polyisobutylene particles.
3 more elements
Dependencies are inferred from the claim text.