The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 2012
Filed:
Feb. 26, 2009
Luigi Resconi, Ferrara, IT;
Davide Balboni, Ferrara, IT;
Luigi Resconi, Ferrara, IT;
Davide Balboni, Ferrara, IT;
Basell Poliolefine Italia, Milan, IT;
Abstract
A 1-butene polymer composition comprising: a) from 10% to 90% by weight of an isotactic 1-butene polymer having the following features: i) isotactic pentad (mmmm) measured byC-NMR, higher than 90%; ii) melting point (TmII) higher than 90° C.; and iii) intrinsic viscosity (IV) measured in tetrahydronaphthalene (THN) at 135° C. comprised between 0.5 dl/g and 5.0 dl/g. b) from 90% to 10% by weight of a copolymer of 1-butene and at least a C-Calpha-olefin derived units, containing from 0% to 10% by mole of propylene or pentene derived units, and/or containing from 0% to 5% by mole of ethylene derived units having a content of C-Calpha-olefin derived units higher than 4.0% by mol and lower than 20.0% by mol; endowed with the following features: i) isotactic pentad mmmm higher than or equal to 90%; pentads (mmrr+mrrm) lower than 4 and pentad rmmr not detectable by C NMR. ii) intrinsic viscosity (IV) measured in tetrahydronaphthalene at 135° C. comprised between 0.8 and 5.0 dL/g; iii) the melting point measured by DSC (TmI) and the C-Calpha-olefin content fulfil the following relationship: TmI<130×Cwherein C is the molar content of C-Calpha-olefin derived units and TmI is the highest melting peak in the first melting transition; otherwise the melting point TmI is not detectable.