Patents

A process for the preparation of reprocessable, reusable and revulcanizable rubber compositions from waste/used and virgin rubber vulcanizates

The present invention relates to a process for the preparation or reprocessable, reusable and revulcanizable rubber compositions from waste/used and virgin rubber Vulcani/ates. The present invention particularly relatres to a processes for the preparation of reprocessable, revulcanizable and reusable rubber compositions from waste/used and virgin rubber vulcanizates by modification with oligomeric resins of renewable natural resources. The novelty of our invention is that either waste/used tire tread rubber or virgin rubber on mixing with 5 to 10% of oligomers such as PCNSL at 160-180°C in a Brabender Plasticorder at a rotor speed of 20-40 rpm for 20-60 min gives compostions which are easily processable and revulcanizsable with conventional curatives at 140 -160°C at cure time ranging from 5-20 minutes.

Patent Assignee:

Patent No: IN233100 [India]

Application No: 571/DEL/2002

Inventor(s): Aryiapallil Ramankutty Menon; Ravindranatha Menon

Issue Date: 27-03-2009

Filing Date: 21-05-2002

Licensing Option: Laboratory willing to jointly develop technology with industrial partner.

Implementing institute: CSIR-National Institute for Interdisciplinary Science and Technology [CSIR-NIIST] 

Funding agency: Council of Scientific and Industrial Research (CSIR)

IPC Classification: C08L 19/00