POLYAMIDE RESIN Russian patent published in 2014 - IPC C08L77/06 C08G69/26 

FIELD: chemistry.

SUBSTANCE: invention relates to polyamide resin, suitable for application in production of articles of industrial and household purpose, such as automobile components, components of electrotechnical and electronic equipment, components of machines. Polyamide resin is obtained by polycondensation of diamine component and component based on dicarboxylic acid, where 70 mol.% or more of diamine component represent p-xilylene diamine of constituting units, component based on dicarboxylic acid represents aliphatic dicarboxylic acid, containing from 6 to 18 carbon atoms. Polyamide resin has number average molecular weight Mn from 10000 to 50000 and degree of dispersity, expressed as Mn/Mw= weight average molecular weight/number average molecular weight, satisfying the following formula (1): 1.5≤(Mw/Mn)≤6.0(1) where Mn and Mw are determined by gel-penetrating chromatography GPC, with polyamide resin having molar balance with excess of carboxylic acid. Also described is composition, based on polyamide resin, used for obtaining moulded articles.

EFFECT: particularly high ability of moulding and processing, high heat resistance, low water absorption, high chemical resistance and good physical-mechanical properties.

5 cl, 2 tbl, 10 ex