COMPOSITION FOR SOFT SKINS AND USES THEREOF

摘要

A composition is disclosed, comprising a block copolymer, at least one homopolymer or copolymer of butene, and at least one olefin homopolymer or copolymer, wherein said block copolymer has hydrogenated low-vinyl polybutadiene end blocks with a specific gravity>0.85 g/cc, and a controlled distribution midblock of polyalkenyl arene/hydrogenated diene. Although the block copolymer has a preferred linear structure as a triblock copolymer, it may also be branched or radial coupled copolymer that has at least 2 arms or more. The composition is useful for rotational molding, slush molding, injection molding, extrusion or compression molding, or thermoforming or calendering for making articles that are resistant to chemicals such as diesel fuel, for the automotive market, for example. The MFR of the block copolymer is 1 to about 50 g/10 min. at 230° C., with a wt. of 2.16 kg.

主权项

1. A composition for producing an article by rotational molding or slush molding or injection molding or extrusion or compression molding or thermoforming or calendering, comprising:
from about 50 to about 70 wt. % block copolymer; from about 15 to about 25 wt. % of at least one homopolymer or copolymer of butene; and from about 12 to about 24 wt. % of at least one polyolefin homopolymer or polyolefin copolymer; wherein said block copolymer has hydrogenated low-vinyl polybutadiene end blocks with a specific gravity>0.85 g/cc, and has a controlled distribution midblock of polyalkenyl arene/hydrogenated diene and wherein said composition total wt. equals 100 wt. %.