USE OF GRANULAR POLYALKYL(METH)ACRYLATE POLYMERS AND MOULDING COMPOUND FOR MAKING EXTRUSION MOULDED ARTICLES WITH DULL SURFACE Russian patent published in 2010 - IPC C08L33/10 

FIELD: chemistry.

SUBSTANCE: invention relates to use of granular polyalkyl(meth)acrylate polymers with average particle size V₅₀ from 30 to 70 mcm for increasing fatigue cracking resistance, which contain polyalkyl(meth)acrylate of moulding compounds. The invention proposes use of granular polyalkyl(meth)acrylate polymers with average particle size V₅₀ from 30 to 70 mcm in a moulding compound, containing at least 65 wt % of an impact viscosity modifier obtained beforehand which contains at least one polyalkyl(meth)acrylate phase, at least 8 wt % of the said granular polyalkyl(meth)acrylates and from 0 to 20 wt % polyalkyl(meth)acrylates with molecular weight between 20000 and 350000 g/mol, whereby the sum of wt % of the components a) - c) is equal to 100 wt % to increase fatigue cracking resistance of said moulding compounds. Disclosed also are moulding compounds described above and corresponding moulded articles.

EFFECT: preparation of moulding compounds, extrusion of which enables to obtain fatigue cracking resistant moulded articles with a dull surface, having good strength characteristics.

23 cl, 1 tbl, 6 ex