Richard Gregory Michael

US Patent:

20050187349, Aug 25, 2005

Filed:

Apr 20, 2005

Appl. No.:

11/110006

Inventors:

Sehyun Kim - Murrysville PA, US
Ruben Migone - Pittsburgh PA, US
Richard Michael - Deer Park TX, US

International Classification:

C08F008/00

US Classification:

525191000

Abstract:

Polypropylene resin compositions are provided that are useful in the production of thermoformed articles and biaxially oriented polypropylene films (BOPPs), tapes and fibers. The resins of the present invention are blends of high crystalline (low solubles) polypropylene homopolymer and an ethylene/propylene random copolymer (RCP). These blends can be used to replace standard high solubles BOPP grade polypropylene homopolymers. In addition, the use of high crystalline polypropylene homopolymers in the blends imparts improved stiffness to the finished films while maintaining good processability of the blends. Such polypropylene compositions are effectively produced by in-reactor blending of a high crystalline propylene homopolymer and a propylene/ethylene random copolymer.

US Patent:

46738690, Jun 16, 1987

Filed:

Feb 13, 1985

Appl. No.:

6/701338

Inventors:

Richard W. Michael - Pasadena TX

Assignee:

Phillips Petroleum Company - Bartlesville OK

International Classification:

G01R 2726

US Classification:

324 61R

Abstract:

A circuit is provided whereby varactor diode is placed in parallel with a capacitance of either the sample or reference cell of a dielectric constant detector. At least the circuitry for applying a voltage to the varactor diode is located outside of the oven in which a dielectric constant detector would typically be located. When the same fluid is flowing through both the sample cell and reference cell, the voltage applies to the varactor diode is manipulated until such time as the capacitance of the sample cell and reference cell are substantially matched as seen by the circuitry which processes the output signals from the dielectric constant detector.