Thermoplastic elastomer compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorsDAVID D. ZHANG, ZHONGYU WANG
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Abstract
Disclosed is a thermoplastic elastomer composition comprising (i) about 10-60 wt % of at least one aliphatic polyamide; (ii) about 0.8-15 wt % of at least one graft-modified ethylene-olefin elastomeric copolymer; (iii) about 0.8-15 wt % of at least one graft-modified ethylene-propylene elastomeric copolymer, and (iv) about 35-85 wt % of at least one polyether-ester-amide block copolymer having a shore D of about 50-60 (as measured in accordance with ASTM D2240), with the total wt % of all components in the composition totaling to 100 wt %. Further disclosed herein is an article made from the thermoplastic elastomer composition disclosed above.
Claims20
A thermoplastic elastomer composition comprising or produced from 10-50 wt % of at least one aliphatic polyamide;
- 1-10 wt % of at least one graft-modified ethylene-olefin elastomeric copolymer;
- 1-10 wt % of at least one graft-modified ethylene-propylene elastomeric copolymer;
- and 35-85 wt % of at least one polyether-ester-amide block copolymer having a shore D of 50-60 (as measured in accordance with ASTM D2240), based on the total weight of the composition.
A process comprising melt blending a graft-modified ethylene-olefin elastomeric copolymer, a graft-modified ethylene-propylene elastomeric copolymer, and a polyether-ester-amide block copolymer wherein each of the graft-modified ethylene-olefin elastomeric copolymer, a graft-modified ethylene-propylene elastomeric copolymer, and a polyether-ester-amide block copolymer has a grafting degree of 0.01 to 5 wt %.
Dependencies are inferred from the claim text.