1
John W Collette, Charles W Tullock: Elastomeric polypropylene. E I Du Pont de Nemours and Company, June 15, 1982: US04335225 (60 worldwide citation)

A fractionable elastic polypropylene which has an inherent viscosity of 1.5-9, exhibits no yield point, has a tensile set not exceeding 150% and contains about 10 to 80% by weight of a diethyl ether-soluble fraction having an inherent viscosity exceeding 1.50. This polypropylene is a direct reaction ...


2
John W Collette, Charles W Tullock: Fractionable, elastomeric poly (1-butene). E I Du Pont de Nemours and Company, James A Costello, November 3, 1981: US04298722 (20 worldwide citation)

A fractionable, elastomeric polymer of 1-butene consisting essentially of 30% to 80%, by weight, of an ether-soluble fraction having an intrinsic viscosity exceeding 1.5 and an infrared crystallinity value of about 1% to 15%; and 20% to 70%, by weight, of an ether-insoluble fraction having an infrar ...


3

4

5

6

7

8

9

10