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1. WO1990013578 - A PROCESS FOR MINIMIZING RESIDUAL FREE HYDRAZINE IN POLYMER LATICES

Publication Number WO/1990/013578
Publication Date 15.11.1990
International Application No. PCT/US1990/002253
International Filing Date 27.04.1990
Chapter 2 Demand Filed 04.09.1990
IPC
C08C 1/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
1Treatment of rubber latex
02Chemical or physical treatment of rubber latex before or during concentration
04Purifying; Deproteinising
C08C 19/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
02Hydrogenation
CPC
C08C 1/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
1Treatment of rubber latex
02Chemical or physical treatment of rubber latex before or during concentration
04Purifying; Deproteinising
C08C 19/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
CTREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
19Chemical modification of rubber
02Hydrogenation
Applicants
  • OLIN CORPORATION [US]/[US]
Inventors
  • SCHIESSL, Henry, W.
  • MANKE, Steven, A.
Agents
  • D'ALESSANDRO, Ralph
Priority Data
350,65311.05.1989US
352,78216.05.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A PROCESS FOR MINIMIZING RESIDUAL FREE HYDRAZINE IN POLYMER LATICES
(FR) PROCEDE POUR REDUIRE AU MINIMUM LES RESIDUS D'HYDRAZINE LIBRE DANS DES LATEX POLYMERES
Abstract
(EN)
This invention relates to a process for minimizing or reducing the amount of residual free hydrazine in polymer latices. The process is particularly useful in the manufacture of hydrogenated nitrile rubber which is resistant to oxidative degradation at high temperatures, as well as resistant to corrosive environments such as acid environments. Nitrile rubbers are useful in the manufacture of fan belts, seals, gaskets, and hoses in increasingly small and hot-running car engines.
(FR)
La présente invention décrit un procédé visant à réduire au minimum la quantité de résidus d'hydrazine libre dans des latex polymères. Ce procédé est particulièrement utile pour la fabrication de caoutchouc nitrile hydrogéné résistant aussi bien à la dégradation oxydante à haute température qu'aux environnements corrosifs, par exemple milieux acides. Les caoutchoucs nitrile s'utilisent pour la fabrication de courroies de ventilateur, de joints d'étanchéité, et de tuyaux dans des moteurs d'automobiles toujours plus petits et à combustion toujours plus forte.
Also published as
Latest bibliographic data on file with the International Bureau