Title of Invention	AN IMPROVED PROCESS FOR MAKING MACROPOROUS ANION EXCHANGE RESINS.
Abstract	An Improved process of making macroporous weak base anion exchange resins comprises the steps of (i) making chlormethylated beads' in a conventional manner using ethylene dichloride as a solvent for swelling the beads; (ii) making'a slurry of the beads with water; (iii) adding caustic 1/e or caustic flakes to the slurry to adjust the pH of the slurry to between 8 and 11; (iv) charging amine into an amination kettle and adding caustic lye or cadstic lye or caustic flakes to adjust the pH of amine to between 8 and 11; (v) charging the said slurry into the said amination kettle pneumatically and maintaining temperature of the said amination kettle to a temperature below, 35 degress celslus and preferably around 10 degrees Celsius daring changing of said slurry i into the amination kettle; (vi) adjusting of pH of aminated resins with hydrochloric acid (HCl) to between 2 and 4; and (Vii) distilling out the solvent (Ethylene dichloride) from amination kettle.

Title of Invention

AN IMPROVED PROCESS FOR MAKING MACROPOROUS ANION EXCHANGE RESINS.

Abstract

An Improved process of making macroporous weak base anion exchange resins comprises the steps of (i) making chlormethylated beads' in a conventional manner using ethylene dichloride as a solvent for swelling the beads; (ii) making'a slurry of the beads with water; (iii) adding caustic 1/e or caustic flakes to the slurry to adjust the pH of the slurry to between 8 and 11; (iv) charging amine into an amination kettle and adding caustic lye or cadstic lye or caustic flakes to adjust the pH of amine to between 8 and 11; (v) charging the said slurry into the said amination kettle pneumatically and maintaining temperature of the said amination kettle to a temperature below, 35 degress celslus and preferably around 10 degrees Celsius daring changing of said slurry i into the amination kettle; (vi) adjusting of pH of aminated resins with hydrochloric acid (HCl) to between 2 and 4; and (Vii) distilling out the solvent (Ethylene dichloride) from amination kettle.

Full Text

Documents:

337-BOM-1991-CANCELLED PAGES.pdf

337-BOM-1991-CORRESPONDENCE(IPO).pdf

337-BOM-1991-CORRESPONDENCE(RECEIVED).pdf

337-BOM-1991-FORM 2(COMPLETE).pdf

337-BOM-1991-FORM 2(GRANTED).pdf

337-BOM-1991-FORM 2(PROVISIONAL).pdf

337-BOM-1991-FORMS.pdf

337-BOM-1991-SPECIFICATION(AMENDED).pdf

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Patent Number

174423

Indian Patent Application Number

337/BOM/1991

PG Journal Number

39/2012

Publication Date

28-Sep-2012

Grant Date

10-Feb-1992

Date of Filing

04-Nov-1991

Name of Patentee

THERMAX LIMITED,

Applicant Address

D-13 MIDC INDUSTRIAL AREA, CHINCHWAD, PUNE.

Inventors:

#	Inventor's Name	Inventor's Address
1	SRINIVAS VINAYAK VAIDYA,	1897, SADASHIV PETH, NATHU BAG, PUNE 411080
2	SATISHCHANDRA SHARADCHANDRA BAPAT,	NO. 2 RONAK APTS, PLOT NO. 5, OFF BANER ROAD LANE, AUNDH, PUNE 411007.
3	AVINASH SADASHIV KALE,	4 SANT DNYANESHWAR SOCIETY, SANTNAGAR, PUNE 411009.
4	SUNIL VASANT MOKASHI,	1202 SUBHASHNAGAR, SHUKRAWAR PETH, PUNE 411002.

PCT International Classification Number

B01J41/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA