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1. IN985/CHENP/2007 - POLYMER LATEX SUITABLE FOR THE PREPARATION OF DIP-MOLDED ARTICLES

Office India
Application Number 985/CHENP/2007
Application Date 08.03.2007
Publication Number 985/CHENP/2007
Publication Date 24.08.2007
Grant Number 254972
Grant Date 11.01.2013
Publication Kind B
IPC
C08F 29/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
29Compositions based essentially on polymers of acyclic compounds containing carton-to-carbon double bonds
02based on hydrocarbon polymers
Applicants
Title
(EN) POLYMER LATEX SUITABLE FOR THE PREPARATION OF DIP-MOLDED ARTICLES
Abstract
(EN)
The present invention relates to a polymer latex made by free-radical emulsion polymerization comprising polymer particles containing structural units derived from at least one conjugated diene component, whereby said polymer particles comprise at least one hard phase segment having a glass transition temperature (Tg) of at least 50°C and at least one soft phase segment having a glass transition temperature (Tg) of 10°C at most, the total amount of hard phase segments being 2 to 40 wt-% and the total amount of the soft phase segments being 60 to 98 wt-% based on the total weight of the polymer particles, whereby the Tg is measured by DSC according to ASTM D3418-03 and said polymer latex having an electrolyte stability determined as critical coagulation concentration of less than 30 mmol/1 CaCl2 (determined for a total solids content of the latex of 0.1% at pH 10) that is particularly suitable for the production of dip-molded articles. Furthermore, the present invention relates to a process for making such a polymer latex, to the use of said polymer latex for the production of dip-molded articles, to a compounded polymer latex composition that is suitable for the production of dip-molded articles, to a method for making dip-molded latex articles, as well as to the latex articles obtained thereby.