[12] Patent
[11] Patent No.:GC0009430  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141993
Date of the Decision to Grant the Patent:20/Dec/2018

[21] Application No.:GC 2014-28625

[22] Filing Date:21/12/2014

[30] Priority:

[33] State [32] Priority date [31] Priority No.
IN
23/12/2013
6039/CHE/2013

[72] Inventors:1- Pranaya Man Singh PRADHAN ،2- Michiel Barend ELEVELD،3- Eswaramurthi NACHIAPPAN

[73] Owner: Shell Internationale Research Maatschappij B.V., Carel van Bylandtlaan 30 2596 HR , The Hague , Netherlands

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C

  

 

  

[51]IPC:
Int. Cl.: C08G 18/18, 18/20, 18/32, 18/48, 18/63, 18/66, 18/76 (2006.01)

[56] Cited Documents:

-US 2009062416 A1 (SASAKI TAKA YUKI [JP] ET AL) 5 March 2009
-US 2008207784 A1 (CLATTY JAN L [US] ET AL) 28 August 2008
-WO 9951661 A1 (ARCO CHEM TECH [US] ; LYONDELL CHEMI E TECHNO LOGIE NE [N L]) 14 October 1999
 
Examiner: Eng. Yusuf AlRaqabi

[54] IMPROVEMENTS RELATING TO POLYURETHANES
[57] Abstract: A process for making a flame retardant polyurethane foam, the process comprising reacting a PO based polyol with foam-forming reactants to provide said polyurethane foam, wherein said polyol is prepared by ring-opening polymerization of alkylene oxide in the presence of a composite metal cyanide complex catalyst, and wherein said polyol is either free from EO moieties or comprises EO moieties in an amount of at most 1% w/w.
No. of claims: 11


 

Note: Any interested individual may, within 3 months of publication of the grant, file objection thereof with the Grievance Committee after payment of grievance fees.