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US 6,319,985 B1Granted
Blends comprising thermoplastic polyurethane
AssigneeBASF SE
InventorsInes Brüning, Andreas Chlosta, Günter Scholz
Life of this patent
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Abstract
The blends comprise (a) thermoplastic polyurethane having a Shore hardness of from 60 A to 50 D and (b) ethylene-propylene (EPM) rubbers and/or modified ethylene-propylene (EPM) rubbers, where the weight ratio of (a):(b) is from 3:1 to 999:1.
Claims4
A thermoplastic polyurethane blend comprising:
- (a) thermoplastic polyurethane having a Shore hardness of from 60A to 50D and
- (b) ethylene-propylene (EPM) rubbers which have been grafted with compounds selected from the group consisting of acrylic acid, methacrylic acid, non-aromatic derivatives of acrylic acid and methacrylic acid, maleic anhydride, and mixtures thereof,
- where said thermoplastic polyurethane blend is exclusive of aromatic unsaturated monomers, the weight ratio of (a):(b) is from 3:1 to 999:1 and the blend has a Shore hardness of from 60A to 54D.
Dependencies are inferred from the claim text.