Thermoplastic elastomer composition for adhesion to crosslinked diene rubbers
AssigneeKraiburg TPE GmbH & Co. KG
InventorFrieder Vielsack
Life of this patent
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Abstract
A thermoplastic elastomer composition (TPE composition) with an improved adhesion to rubber based on cross-linked diene rubber mixtures is disclosed. The rubbers are preferably sulphur-cross-linkable and selected from the group natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), acrylonitrile butadiene rubber (NBR), butyl rubber (IIR) or ethylene propylene diene rubber (EPDM). In addition, the use of the thermoplastic elastomer composition for producing a composite material with a rubber, as well as an article that includes a thermoplastic elastomer composition and a rubber are disclosed. Further, a process for producing a thermoplastic elastomer composition is also disclosed.
Claims16
A thermoplastic elastomer composition, comprising:
- a styrene block copolymer (SBC) with a number average molecular weight of more than 70,000 g/mol,
- a double bond-containing polymer with a molar proportion of double bonds in a range from 5 to 95 mol.-% relative to monomer units of the double bond-containing polymer,
- a non-elastomeric polyolefin, and
- a phenolic resin,
- wherein a weight ratio of the SBC to the double bond-containing polymer lies in a range from 8:1 to 4:1.
A method of producing a composite material, comprising:
- preparing a thermoplastic elastomer composition including:
- a styrene block copolymer (SBC) with a number average molecular weight of more than 70,000 g/mol,
- a double bond-containing polymer with a molar proportion of double bonds in a range from 5 to 95 mol.-% relative to monomer units of the double bond-containing polymer, and
- a non-elastomeric polyolefin, and
- adhering the thermoplastic elastomer composition to a rubber based on cross-linked diene rubber mixtures,
- wherein a weight ratio of the SBC to the double bond-containing polymer lies in a range from 8:1 to 4:1.
An article comprising:
- a thermoplastic elastomer composition including:
- a styrene block copolymer (SBC) with a number average molecular weight of more than 70,000 g/mol,
- a double bond-containing polymer with a molar proportion of double bonds in a range from 5 to 95 mol.-% relative to monomer units of the double bond-containing polymer, and
- a non-elastomeric polyolefin;
- and
- a rubber based on cross-linked diene rubber mixtures,
- wherein the thermoplastic elastomer composition adheres to the rubber, and
- wherein a weight ratio of the SBC to the double bond-containing polymer lies in a range from 8:1 to 4:1.
A process for producing a thermoplastic elastomer composition, comprising:
- blending together:
- a styrene block copolymer (SBC) with an average molecular weight of more than 70,000 g/mol,
- a double bond-containing polymer with a molar proportion of double bonds in a range from 5 to 95 mol.-% relative to a molar number of all monomer units of the double bond-containing polymer used for the polymerization,
- a non-elastomeric polyolefin, and
- a phenolic resin,
- wherein a weight ratio of the SBC to the double bond-containing polymer lies in a range from 8:1 to 4:1.
Dependencies are inferred from the claim text.