Filler-containing molding composition and process for its manufacture
AssigneeHoechst Aktiengesellschaft
InventorsWalter Luders, Karlheinz Burg, Walter Herwig, Ulrich van Spankeren
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Abstract
In filler-containing molding compositions a very good compatibility between the hydrophilic filler and the hydrophobic polymer matrix is obtained by using as adhesion promotor alkali metal salts of alkyl or alkylene-sulfonic acids or alkyl sulfates, the derivatives thereof and the acids on which the salts are based. The flow properties of the molding compositions and the mechanical properties of the shaped articles made therefrom are improved.
Claims6
A filler-containing molding composition consisting of
- 90 to 20 parts by weight of a polyolefin,
- 10 to 80 parts by weight of an alkaline earth metal carbonate as fillers, the usual additives and
- 0.1 to 10% by weight, calculated on the filler, of an adhesion promotor,
- wherein the adhesion promotor is an organic sulfur compound of the formula
- R--SO.sub.3 --Me
- in which R denotes a linear or branched alkyl or alkenyl radical having from 6 to 22 carbon atoms which may be substituted by a hydroxy or acetoxy group, the radical R.sup.1 --O(CH.sub.2 CH.sub.2 O).sub.m in which R.sup.1 is alkyl having from 6 to 22 carbon atoms and m is an integer from 1 to 4, the radical R.sup.1 --CO--O(CH.sub.2).sub.n in which R.sup.1 is as defined above and n is an integer from 2 to 4, or the radical R.sup.1 --CO--NH(CH.sub.2).sub.n in which R.sup.1 and n are as defined above and Me is hydrogen or an alkali metal.
A filler-containing molding composition comprising 90 to 20 parts by weight of a polyolefin, 10 to 80 parts by weight of an alkaline earth metal carbonate as filler, and 0.1 to 10% by weight, calculated on the filler, of an adhesion promoter, wherein the adhesion promoter is an organic sulfur compound of the formula
- R--SO.sub.3 --Me
- in which R denotes a linear or branched alkyl or alkenyl radical having from 6 to 22 carbon atoms which may be substituted by a hydroxy or acetoxy group, the radical R.sup.1 --O(CH.sub.2 CH.sub.2 O).sub.m in which R.sup.1 is alkyl having from 6 to 22 carbon atoms and m is an integer from 1 to 4, the radical R.sup.1 --CO--O(CH.sub.2).sub.n in which R.sup.1 is as defined above and n is an integer from 2 to 4, or the radical R.sup.1 --CO--NH(CH.sub.2).sub.n in which R.sup.1 and n are as defined above and Me is hydrogen or an alkali metal.
A process for the preparation of a filler-containing molding composition which comprises mixing 90 to 20 parts by weight of a polyolefin, 10 to 80 parts by weight of an alkaline earth metal carbonate and, as an adhesion promotor, 0.1 to 10% by weight, calculated on the filler, of an organic sulfur compound of the formula
- R--SO.sub.3 --Me
- wherein R denotes a linear or branched alkyl or alkenyl radical having from 6 to 22 carbon atoms which may be substituted by a hydroxy or acetoxy group, the radical R.sup.1 --O(CH.sub.2 CH.sub.2 O).sub.m in which R.sup.1 is alkyl having from 6 to 22 carbon atoms and m is an integer from 1 to 4, the radical R.sup.1 --CO--O(CH.sub.2).sub.n in which R.sup.1 is as defined above and n is an integer from 2 to 4, or the radical R.sup.1 --CO--NH(CH.sub.2).sub.n in which R.sup.1 and n are as defined above and Me is hydrogen or an alkali metal.
Dependencies are inferred from the claim text.