David G Pendlebury, 80128 Brookschase Ln, Richmond, VA 23229

4362852, Dec 7, 1982

Sep 16, 1981

6/302907

David Pendlebury - Chester VA
Hugh H. Rowan - Chapel Hill NC
Edward J. Buyalos - Chester VA

Allied Corporation - Morris Township, Morris County NJ

C08G 6376
C08F28300
C08L 6700

525437

This invention is an improved process to remove volatiles from molten synthetic, preferably fiber forming relatively high viscosity polymers which comprises passing molten polymer through a rotary disk polymer processor at a temperature of between 260. degree. C. and 300. degree. C. at a rate of between about 10 and 75 pounds (4. 5 and 34 kg) per hour per square foot (0. 093 m. sup. 2) of processor filming area, at a rotational rate of between about 5 and 75 rpm for the disks, and a processor having between 1 and 20 stages.

4392285, Jul 12, 1983

Oct 19, 1981

6/312587

Wilbur L. Stables - Matoaca VA
David Pendlebury - Chester VA
Anthony M. Saich - Colonial Heights VA
Maxwell C. Hamlyn - Cary NC

Allied Corporation - Morris Township, Morris County NJ

D02J 108

28276

An apparatus for commingling yarn. The apparatus has an inner body having a yarn passageway with a diameter of about 1/4 inch to 5/16 inch. There are orifices through which a high pressure fluid such as air pass to the yarn passageway. The orifices have a diameter of about 0. 060 to 0. 80 inches.

3999910, Dec 28, 1976

Oct 8, 1975

5/620521

David Pendlebury - Chester VA
James Edwin Bradshaw - Chapel Hill NC

Allied Chemical Corporation - Morris Township NJ

D01D 508

425 72S

An apparatus for producing a substantially nonturbulent stream of cooling gas for quenching a melt extruded filament, said apparatus comprising a new gas plenum chamber wherein gas diverting means turns and directs the cooling gas through the plenum chamber for passage through a diffuser, simultaneously reducing turbulence and smoothing the velocity profile of the cooling gas for passage through the diffuser. Another feature of the apparatus is its ability to supply different gas rates to the upper and lower zones of the quench cabinet.

4432940, Feb 21, 1984

Mar 15, 1982

6/358177

Edward J. Buyalos - Chester VA
Hugh H. Rowan - Chapel Hill NC
Steven A. Young - Cary NC
David Pendlebury - Chester VA

Allied Corporation - Morris Township, Morris County NJ

C07C 6982

422135

In a reactor, for the continuous polymerization of feed materials to higher viscosity process fluid, comprising a vertical, hollow vessel having an inlet for the introduction of feed materials, an outlet for the discharge of process product and an exhaust for reaction vapors; and means for heating the vessel; the improvement comprising a draft tube, partially immersed vertically in the process fluid, the non-immersed end of the tube having at least one annular plate on the periphery thereof which overhangs the process fluid; and an impeller, located within the draft tube and propelling the process fluid up the draft tube and over the plate.

3930775, Jan 6, 1976

Sep 19, 1974

5/507509

William Bernard Fisher - Chester VA
Howard Lyle Helmer - Colonial Heights VA
David Pendlebury - Chester VA

Allied Chemical Corporation - New York NY

G01B 1300
D01D 300

425169

A method and apparatus for off-line testing and correcting the metering accuracy of a split multihole spinneret fed by a single metered stream by determining end to end variations in flow rate and by reworking a number of holes in the lower flow rate side of the split spinneret, calculated by multiplying the average test percent bias of the split spinneret by a predetermined constant, so as to bring end to end variations in flow rate to within a required accuracy.

4001359, Jan 4, 1977

Jul 7, 1975

5/593402

William Bernard Fisher - Chester VA
Howard Lyle Helmer - Colonial Heights VA
David Pendlebury - Chester VA

Allied Chemical Corporation - Morris Township NJ

G01B 1308

264 401

A method and apparatus for off-line testing and correcting the metering accuracy of a split multihole spinneret fed by a single metered stream by determining end to end variations in flow rate and by reworking a number of holes in the lower flow rate side of the split spinneret, calculated by multiplying the average test percent bias of the split spinneret by a predetermined constant, so as to bring end to end variations in flow rate to within a required accuracy.

5236558, Aug 17, 1993

Sep 26, 1990

7/588635

Edward J. Buyalos - Chester VA
David Pendlebury - Chesterfield VA
Lon K. Bouknight - Richmond VA
Neil F. Blake - Wake NC
Clarence McKeithan - Sanford Lee NC

Allied-Signal Inc. - Morris Township, Morris County NJ

B01D 310

203 18

A method to recycle spent ethylene glycol in a continuous process for the manufacture of polyethylene terephthalate in at least one reactor vessel which includes: a. condensing the overhead vapor of spent ethylene glycol, water and other byproducts from the reactor vessel, b. feeding the condensed vapor to a single distillation column, c. removing only part of the water and other byproducts from ethylene glycol by distillation overhead in the column and d. feeding the resultant bottoms of the column back to the reactor vessel as recycle ethylene glycol along with virgin ethylene glycol, so that polyethylene terephthalate polymer being manufactured by the continuous process is essentially unaffected regarding polymer color and ability to be spun into high quality yarn, but with lower diethylene glycol content that polymer made from all virgin ethylene glycol.

4072663, Feb 7, 1978

Feb 22, 1977

5/770731

David Pendlebury - Chester VA

Allied Chemical Corporation - Morris Township, Morris County NJ

C08G 6370

260 75M

In the production of polyester fibers in a melt-spinning process, the transfer system between the melt source and the spinning position has a special importance due to the thermal degradation of the polyester. The present invention provides an improved transfer process which ensures relatively low thermal degradation of the molten polymer. The process is characterized by employment of two or more indexes whereby transfer elements and polymer flows in the transfer system may be correlated for minimum degradation of the polymer. The invention is of particular importance in a continuous process involving continuous polyester polycondensation coupled with continuous melt-spinning.