Articles comprising propylene-based elastomers
AssigneeExxonMobil Chemical Patents Inc.
InventorsSudhin Datta, Chia Yung Cheng, Srivatsan Srinivas, Abdelhadi Sahnoune
Life of this patent
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Abstract
The present invention is directed generally to the use of propylene-based elastomers in articles. The propylene-based elastomers have isotactic polypropylene crystallinity, a melting point by DSC of 110° C. or less, a heat of fusion of from 5 to 50 J/g, and comprise at least 75 wt % propylene-derived units, at least 6 wt % ethylene-derived units, and optionally diene-derived units. The present invention is also directed to processes for making articles comprising propylene-based elastomers.
Claims14
A fabric comprising:
- at least 60 wt %, based on the total polymeric weight of the fabric, of an elastomer having an isotactic propylene triad tacticity of from 65 to 95%, a melting point by DSC equal to or less than 110° C., a heat of fusion of from 5 to 50 J/g, and comprising:
- (a) propylene-derived units in an amount of at least 75 wt %, based on the combined weight of components (a), (b), and (c),
- (b) ethylene-derived units in an amount of at least 6 wt %, based on the combined weight of components (a), (b), and (c), and
- (c) diene-derived units in an amount of from 0.3 to 5 wt %, based on the combined weight of components (a), (b), and (c);
- wherein the fabric further comprises a fluid curing system and is at least partially cured.
A fabric comprising:
- at least 60 wt %, based on the total polymeric weight of the fabric, of an elastomer having an isotactic propylene triad tacticity of from 65 to 95%, a melting point by DSC equal to or less than 110° C., a heat of fusion of from 5 to 50 J/g, and comprising:
- (a) propylene-derived units in an amount of at least 75 wt %, based on the combined weight of components (a), (b), and (c),
- (b) ethylene-derived units in an amount of at least 6 wt %, based on the combined weight of components (a), (b), and (c), and
- (c) diene-derived units in an amount of from 0.3 to 5 wt %, based on the combined weight of components (a), (b), and (c);
- wherein the fabric is at least partially cured by radiation.
A film comprising:
- at least 60 wt %, based on the total polymeric weight of the film, of an elastomer having an isotactic propylene triad tacticity of from 65 to 95%, a melting point by DSC equal to or less than 110° C., a heat of fusion of from 5 to 50 J/g, and comprising:
- (a) propylene-derived units in an amount of at least 75 wt %, based on the combined weight of components (a), (b), and (c),
- (b) ethylene-derived units in an amount of at least 6 wt %, based on the combined weight of components (a), (b), and (c), and
- (c) diene-derived units in an amount of from 0.3 to 5 wt %, based on the combined weight of components (a), (b), and (c);
- wherein the film is at least partially cured by radiation.
A film comprising:
- at least 60 wt %, based on the total polymeric weight of the film, of an elastomer having an isotactic propylene triad tacticity of from 65 to 95%, a melting point by DSC equal to or less than 110° C., a heat of fusion of from 5 to 50 J/g, and comprising:
- (a) propylene-derived units in an amount of at least 75 wt %, based on the combined weight of components (a), (b), and (c),
- (b) ethylene-derived units in an amount of at least 6 wt %, based on the combined weight of components (a), (b), and (c), and
- (c) diene-derived units in an amount of from 0.3 to 5 wt %, based on the combined weight of components (a), (b), and (c);
- wherein the film further comprises a fluid curing system and is at least partially cured.
Dependencies are inferred from the claim text.