| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to methacrylic resin, an article moulded therefrom and a method of producing methacrylic resin. The methacrylic resin contains 80-99.5 wt % of a monomer link of a methacrylic ester and 0.5-20 wt % of another vinyl monomer link, which is copolymerised with at least one of the methacrylic esters, where the methacrylic resin satisfies the following conditions (I)-(III): (I) has weight-average molecular weight, measured by gel permeation chromatography, ranging from 60000 to 300000; (II) has content of a component with molecular weight of 1/5 or less of the peak molecular weight (Mp), obtained from an elution curve during gel permeation chromatography, wherein said content ranges from 7% to 40% of the degree of expansion of the area of the region obtained from the elution curve during gel permeation chromatography; and (III) has angle of repose from 20° to 40°.EFFECT: resin is characterised by good non-colouring capacity, transparency, resistance to impact loads, resistance to solvents, while maintaining high resistance to heat ageing.12 cl, 5 tbl, 4 dwg, 20 ex |
