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A Process For Recycling Used Polyethylene Terephthalate (Pet) And Preparing A Composite Of Unsaturated Polyester Resins Thereof
Abstract: A process for recycling used polyethylene terephthalate (PET). Used PET is water washed, dried, depolymerised using tetrahydrophthalic anhydride (THPA) and then repolymerised using propylene glycol, ethylene glycol, maleic anhydride or fumaric acid or combinations thereof to obtain unsaturated polyester resins. If desired, the unsaturated polyester resins are further blended with a filler, reactive diluent and compatibilizing agent and optionally, additives, to form a viscous mass which is cured in the presence of methyl ethyl ketone peroxide(MEKP) at room temperature to obtain a composite of unsaturated polyester resins for electrical encapsulation or impregnation.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
31 March 2009
Publication Number
50/2010
Publication Type
INA
Invention Field
POLYMER TECHNOLOGY
Status
Email
Parent Application
Applicants
CROMPTON GREAVES LTD
CG HOUSE, DR ANNIE BESANT ROAD,
WORLI, MUMBAI 400 030,
MAHARASHTRA, INDIA.
Inventors
1. JAISWAL RAJENDRA
BOTH OF CROMPTON GREAVES LTD,
ADVANCED MATERIAL & PROCESS TECHNOLOGY CENTER,
CG GLOBAL R&D CENTER,
KANJUR MARG (EAST),
MUMBAI 400042,
MAHARASHTRA, INDIA.
2. CHAUDHARI LOKESH KISAN
BOTH OF CROMPTON GREAVES LTD,
ADVANCED MATERIAL & PROCESS TECHNOLOGY CENTER,
CG GLOBAL R&D CENTER,
KANJUR MARG (EAST),
MUMBAI 400042,
MAHARASHTRA, INDIA.
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 850-MUM-2009-FORM 26(11-10-2010).pdf | 2010-10-11 |
| 2 | 850-MUM-2009-FORM 18(11-10-2010).pdf | 2010-10-11 |
| 3 | 850-mum-2009-form 13(11-10-2010).pdf | 2010-10-11 |
| 4 | 850-MUM-2009-CORRESPONDENCE(11-10-2010).pdf | 2010-10-11 |
| 5 | 850-MUM-2009_EXAMREPORT.pdf | 2018-08-10 |
| 6 | 850-MUM-2009-REPLY TO HEARING(20-9-2013).pdf | 2018-08-10 |
| 7 | 850-MUM-2009-REPLY TO EXAMINATION REPORT(20-9-2013).pdf | 2018-08-10 |
| 8 | 850-MUM-2009-FORM 3(31-3-2009).pdf | 2018-08-10 |
| 9 | 850-MUM-2009-FORM 26(31-3-2009).pdf | 2018-08-10 |
| 10 | 850-mum-2009-form 2.pdf | 2018-08-10 |
| 12 | 850-mum-2009-form 2(title page).pdf | 2018-08-10 |
| 13 | 850-MUM-2009-FORM 2(TITLE PAGE)-(20-9-2013).pdf | 2018-08-10 |
| 14 | 850-mum-2009-form 1.pdf | 2018-08-10 |
| 15 | 850-MUM-2009-FORM 1(6-7-2009).pdf | 2018-08-10 |
| 16 | 850-MUM-2009-FORM 1(31-3-2009).pdf | 2018-08-10 |
| 17 | 850-mum-2009-description(complete).pdf | 2018-08-10 |
| 19 | 850-mum-2009-correspondence.pdf | 2018-08-10 |
| 20 | 850-MUM-2009-CORRESPONDENCE(IPO)-(HEARING NOTICE)-(22-8-2014).pdf | 2018-08-10 |
| 21 | 850-MUM-2009-CORRESPONDENCE(IPO)-(HEARING NOTICE)-(15-1-2016).pdf | 2018-08-10 |
| 22 | 850-MUM-2009-CORRESPONDENCE(IPO)-(FER)-(20-9-2012).pdf | 2018-08-10 |
| 23 | 850-MUM-2009-CORRESPONDENCE(IPO)-(DECISION)-(2-2-2016).pdf | 2018-08-10 |
| 24 | 850-MUM-2009-CORRESPONDENCE(IPO)-(22-9-2009).pdf | 2018-08-10 |
| 25 | 850-MUM-2009-CORRESPONDENCE(6-7-2009).pdf | 2018-08-10 |
| 26 | 850-mum-2009-claims.pdf | 2018-08-10 |
| 28 | 850-MUM-2009-CLAIMS(MARKED COPY)-(20-9-2013).pdf | 2018-08-10 |
| 29 | 850-MUM-2009-CLAIMS(AMENDED)-(20-9-2013).pdf | 2018-08-10 |
| 30 | 850-mum-2009-abstract.pdf | 2018-08-10 |