Thermoplastic mixture with high flexibility and high melting point
AssigneeSika Technology AG
InventorsMatthias Gössi, Peter Zweifel
Life of this patent
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Abstract
A thermoplastic mixture is described that includes at least one impact-resistant polypropylene copolymer and at least one ethylene-1-octene copolymer. The weight ratio of impact-resistant polypropylene copolymer to ethylene-1-octene copolymer can be in the range of 35:65 to 65:35. The thermoplastic mixture has a high melting point and excellent flexibility. The mixture is suitable in particular for roof membranes and waterproofing membranes.
Claims21
A thermoplastic mixture comprising at least one impact-resistant polypropylene copolymer (ICP) and at least one ethylene-1-octene copolymer;
- wherein the mixture has a weight ratio of ICP to ethylene-1-octene copolymer in a range of from 35/65 to 65/35;
- and
- wherein the ICP is based on an isotactic polypropylene and the ICP has a melt flow index (MFI) of 8 g/10 min to 16 g/10 min determined at 190° C., 2.16 kg with a standard ASTM D1238.
A thermoplastic mixture obtained by mixing at least one impact-resistant polypropylene copolymer (ICP) and at least one ethylene-1-octene copolymer;
- wherein the mixture has a weight ratio of ICP to ethylene-1-octene copolymer in a range of from 35/65 to 65/35;
- and
- wherein the ICP is based on an isotactic polypropylene, and wherein the ICP has a melt flow index (MFI) of 8 g/10 min to 16 g/10 min determined at 190° C., 2.16 kg with a standard ASTM D1238.
A thermoplastic mixture obtained by mixing at least one impact-resistant polypropylene copolymer (ICP) and at least one ethylene-1-octene copolymer;
- wherein the mixture has a weight ratio of ICP to ethylene-1-octene copolymer in a range of from 35/65 to 65/35;
- and
- wherein the ICP is based on an isotactic polypropylene,
- wherein the mixture is obtained by additionally mixing at least one crosslinked thermoplastic elastomer.
A method of producing a thermoplastic mixture, the method comprising mixing at least one impact-resistant polypropylene copolymer (ICP) and at least one ethylene-1-octene copolymer, wherein the ICP is based on an isotactic polypropylene and the ICP has a melt flow index (MFI) of 8 g/10 min to 16 g/10 min determined at 190° C., 2.16 kg with a standard ASTM D1238.
Dependencies are inferred from the claim text.