POLYMERIC LATEX SUITABLE FOR DIP MOULDING ARTICLES Russian patent published in 2010 - IPC C08L9/10 C08F2/32 A61B19/04 A47L13/18 B29C41/14 

FIELD: chemistry.

SUBSTANCE: invention describes polymeric latex made through radical emulsion polymerisation, containing polymer particles which contain structural units obtained from at least one conjugated diene component, where the said polymer particles contain at least one hard phase segment having glass transition point (T_g) of at least 50°C and at least one soft phase segment having glass transition point (T_g) not higher than 10°C, where total number of hard phase segments constitutes 2-40 wt %, and total number of soft phase segments constitutes 60-98 wt % relative total weight of the polymer particles, where T_g is measured using a differential scanning calorimetry (DSC) method in accordance with ASTM D3418-03, and the said polymeric latex is resistant to electrolytes, defined as critical coagulation concentration less than 30 mmol/l CaCl₂ (defined for overall content of solid particles of latex 0.1 at pH 10). Described also is a method of producing the said latex. The invention describes a composite polymeric latex composition suitable for dip moulding articles, which contains the said polymeric latex; described also is a film made from said polymeric latex and a method of making said film, as well as a latex article containing said film.

EFFECT: polymeric latex which may be contained in the composite latex composition which has prolonged stability and possibility of use for conventional dip moulding processes for making latex articles where there is no need for cross-linking the composition either with radiation or with a cross-linking agent.

22 cl, 2 dwg, 3 tbl, 6 ex