MANUFACTURE OF ABSORPTIVE POLYETHER URETHANE PARTICLE

Title:

MANUFACTURE OF ABSORPTIVE POLYETHER URETHANE PARTICLE

Document Type and Number:

Japanese Patent JPS58189220

Kind Code:

A

Abstract:

The invention relates to polyetherurethane particles having absorptive activity whereby these particles may be applied for the extractions or the separations of metal ions from liquids, e.g. from waste liquors leaving galvanizing, printing and metal working industries. The particles are of a spherical shape, have a bulk density of at least 0.5 g/cm3 and are resistant against acidic liquids. The invention provides a method for such extractions and separation. The invention provides also a method for production of the polyetherurethane particles by forming a prepolymer and subjecting the dissolved prepolymer in the presence of 2-methylpiperazine suspension to polycondensation.

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Inventors:

ARISU FUAN ERUFUEN
HENRIKUSU GERARUDOUSU YOSEFU O

Application Number:

JP6930883A

Publication Date:

November 04, 1983

Filing Date:

April 21, 1983

Export Citation:

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Assignee:

TNO

International Classes:

B01D15/00; B01J20/26; C01G1/00; C08G18/00; C08G18/08; C08G18/10; C08G18/32; C08G18/48; C08G18/65; C08J3/12; C22B3/00; C22B60/02; (IPC1-7): C08G18/08; C08G18/66

Attorney, Agent or Firm:

Heiyoshi Odashima

Previous Patent: JPS58189219

Next Patent: PRODUCTION OF POLYURETHANE RESIN