Sunoco Inc (r&m)

Alcoa Inc.

Alcoa USA Corp.

Andrew L Schnitgen

Sehyun Kim

Mark Weaver

Robert A DiMilia

James C McMillen

Frankie A Phelps

Craig C Meverden

Frankie E Phelps

Jeffrey S Salek

Kimberly Miller McLoughlin

Rubén A Migone

Jeff S Salek

Dan Rosenthal

Mark L Weaver

James C Mcmillen

Robert A Dimilia

A method to recycle TiB2 articles, and in particular, a method to recycle a TiB2 feedstock including TiB2 articles and Ti-ore and/or Ti-slag by chlorination.

Recycle of titanium diboride materials

High melt flow rate high crystallinity polypropylene homopolymer are produced in a bulk polymerization process using a Ziegler-Natta catalyst containing a combination of two internal electron donors and selected external donors. The high melt flow rate, high crystallinity polypropylene homopolymers produced according to the current invention display improved flexural modulus and tensile yield stress when nucleated.

High crystallinity, high melt flow rate polypropylene

A thermoplastic polyolefin having a melt flow rate of 20 dg/min or higher at 230&#xb0; C. is produced in reactor without visbreaking. By controlling ratio of the weight average molecular weight of the xylene soluble fraction to the weight average molecular weight of the xylene insoluble fraction, a high melt flow thermoplastic polyolefin can be produced having a good balance of impact and stiffness, tensile elongation at break and gloss properties. Optionally, the ratio of the melt flow rate of the homopolymer phase to the melt flow rate of the total thermoplastic polyolefin can also be controlled. By compounding thermoplastic polyolefins according to the current invention with one or more modifiers, additional compositions can be produced having improved resistance to solvents.

High melt flow rate thermoplastic polyolefins produced in-reactor

A paintable impact copolymer composition is produced by in-reactor blending of a xylene insoluble polypropylene fraction and a xylene soluble ethylene-propylene rubber (EPR) fraction. The composition comprises from about 5 wt. % to about 50 wt. % a xylene-soluble portion and from about 50 wt. % to about 95 wt. % a xylene-insoluble portion. The ratio of the weight average molecular weight of said xylene-soluble portion to that of said xylene-insoluble portion is from about 0.5 to about 1.8. The intrinsic viscosity of said xylene-soluble portion is from about 0.5 to about 7.0 dL/g. The xylene-soluble portion comprises from about 30 to about 70 mole percent ethylene units.

Paintable, in-reactor blended, thermoplastic polyolefin

Growing community of inventors

Mars, PA, United States of America

Andrew L Schnitgen