Cabot Corporation

Santiague Pierre

Alain Thielen

Mark J Hampden-Smith

Agathagelos Kyrlidis

Bruce E MacKay

Federico Villalpando-Paez

Alyson M Christopher

Limeng Chen

George D Eid

Davide Cammarata

Bruce E Mackay

Mark Hampden-Smith

George Eid

A composite polymer composition comprising partially crystallized carbon black. The composition exhibits superior thermal transfer properties in plastic formulations. The polymer precursor exhibits excellent rheology when compared to similar compositions comprising traditional carbon blacks. The composite polymers provide for higher loading of more thermally conductive carbon blacks in a variety of composite polymer compositions.

Thermally conductive polymer compositions containing carbon black

A masterbatch for pressure pipe applications is disclosed. The masterbatch includes carbon black in a concentration that is in excess of 40 weight percent (wt %) of the masterbatch, and a high-density polyethylene (HDPE) carrier resin in a concentration that is in the range of 40 to 60 wt % of the masterbatch and has a melt flow index above 100 g/10 min at 2.16 kg/190&#xb0; C. and a weight average molecular weight (Mw) that is less than 100000. The masterbatch may further include one or more additives (e.g., lubricant and/or an anti-oxidant). In some embodiments, microdispersion of carbon black in the masterbatch is rated less than 3 (according to ISO 18553). In one specific case, 98% or more of observed carbon black agglomerates are less than 30 microns. The masterbatch may be included, for example, in a pressure pipe compound where it is diluted with a base polymer.

High loading carbon black masterbatch for pressure pipe applications

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Liege, Belgium

Santiague Pierre