摘要:
Manufacture articles in the form of sheets coated with a composition consisting of: a) from 75 to 99 parts by weight of a polypropylenic material of melt index comprised between 5 and 60, consisting of a prevailingly isotactic polymer of propylene; b) from 1 to 25 parts b.w. of polyethylene having a density comprising between 0.910 and 0.935, having a melt index comprised between 1 and 10, or of an ethylene-propylene copolymer of the amorphous type, having a melt index comprised between 1 and 50; c) from 0.01 to 0.2 parts b.w. on 100 parts of polymeric composition of an organic sulphide of formula: A-S-B wherein A and B, equal to or different from each other, are aryl, alkyl, alkylaryl groups, at least one of the groups A and B being an aryl containing a functional hydroxyl group in position 2 or 4 with respect to S, and at least one linear or branched alkyl group.
摘要:
Manufacture articles in the form of sheets coated with a composition consisting of:
a) from 75 to 99 parts by weight of a polypropylenic material of melt index comprised between 5 and 60, consisting of a prevailingly isotactic polymer of propylene; b) from 1 to 25 parts b.w. of polyethylene having a density comprising between 0.910 and 0.935, having a melt index comprised between 1 and 10, or of an ethylene-propylene copolymer of the amorphous type, having a melt index comprised between 1 and 50; c) from 0.01 to 0.2 parts b.w. on 100 parts of polymeric composition of an organic sulphide of formula: A-S-B wherein A and B, equal to or different from each other, are aryl, alkyl, alkylaryl groups, at least one of the groups A and B being an aryl containing a functional hydroxyl group in position 2 or 4 with respect to S, and at least one linear or branched alkyl group.
摘要:
Process for preparing homogeneous compositions of olefinic polymers in flakes and of additives, suitable for the direct transformation into manufactured articles, consisting in mixing the polymer with the additive and with a third component, acting as coupling agent, selected from the class consisting of liquid or solid paraffinic compounds having a linear or branched chain, comprising from 2 to 500 carbon atoms, optionally containing one or more polar functional groups, which is employed in the pure state or in solution in hydrocarbon solvents, as the rate of 0.01-5% by weight referred to the total of the mix.
摘要:
The invention relates to olefinic polymers characterized by the presence of free carboxylic groups arranged along the polymeric chain, obtained by radicalic grafting of unsaturated carboxylic acids onto the chain of the olefinic polymer. The products so obtained exhibit in particular a high adhesion to metals. The manufacturing process is based on the use of at least two different organic peroxides, having different reactivities.
摘要:
The invention relates to olefinic polymers characterized by the presence of free carboxylic groups arranged along the polymeric chain, obtained by radicalic grafting of unsaturated carboxylic acids onto the chain of the olefinic polymer. The products so obtained exhibit in particular a high adhesion to metals. The manufacturing process is based on the use of at least two different organic peroxides, having different reactivities.
摘要:
Manufacture articles in the form of sheets coated with a composition consisting of: a) from 75 to 99 parts by weight of a polypropylenic material of melt index comprised between 5 and 60, consisting of a prevailingly isotactic polymer of propylene; b) from 1 to 25 parts b.w. of polyethylene having a density comprising between 0.910 and 0.935, having a melt index comprised between 1 and 10, or of an ethylene-propylene copolymer of the amorphous type, having a melt index comprised between 1 and 50; c) from 0.01 to 0.2 parts b.w. on 100 parts of polymeric composition of an organic sulphide of formula: A-S-B wherein A and B, equal to or different from each other, are aryl, alkyl, alkylaryl groups, at least one of the groups A and B being an aryl containing a functional hydroxyl group in position 2 or 4 with respect to S, and at least one linear or branched alkyl group.