Raj R SharmaHokendauqua, PA

4150567, Apr 24, 1979

Jun 29, 1978

5/920591

Dusan C. Prevorsek - Morristown NJ
Young D. Kwon - Morristown NJ
Raj K. Sharma - Morristown NJ

Allied Chemical Corporation - Morris Township, Morris County NJ

G01M 1702

73146

By wheel testing two tires having different construction parameters, e. g. different tire cords and measuring the temperatures at a few points within each tire body; and by measurement with a high strain dynamic viscoelastometer, the heat generation rate and dynamic tensile moduli (at various temperatures, strain frequencies and tensions) of the cords and rubber used in each tire are determined, where the values of the exponents "X" in the general equation relating cyclic strain amplitude, S, in the tire cord and in the rubber of each tire vs. the dynamic tensile moduli, E, for cords and rubber, at given temperature can be determined in the form: S. sub. A /S. sub. B=( E. sub. B /E. sub. A). sup. X.

4056973, Nov 8, 1977

Dec 13, 1976

5/750039

Dusan C. Prevorsek - Morristown NJ
Young D. Kwon - Morristown NJ
Raj K. Sharma - Morristown NJ

Allied Chemical Corporation - Morris Township NJ

G01N 334

73 91

An apparatus and method for testing viscoelastic solids, such as tire cord. The apparatus includes: holding means, pretension means, first and second displacement generators, and mechanical-electrical transforming means. The holding means holds the material in a predetermined position. The pretension means applies tension during testing. The first displacement generator has an eccentric means for applying cyclic displacement. The second displacement generator applies cyclic displacement to the material co-directional with that applied by the first displacement generator, but of smaller amplitude and higher frequency. The mechanical-electrical transforming means transforms mechanical motion into electrical signals, such as a stress signal, a strain signal and a differentiated strain signal. The apparatus may also include means for differential testing of duplicate material samples wherein one sample is subjected to cyclic displacement of both the first and second displacement generators, and the other sample is subjected to cyclic displacement of the first displacement generator only. The apparatus may further include integrating means for integration of a stress-strain hysteresis loop.

5405524, Apr 11, 1995

Oct 29, 1993

8/145361

Raj K. Sharma - Morristown NJ
Dusan C. Prevorsek - Morristown NJ

AlliedSignal Inc. - Morristown NJ

C10C 302

208 40

The process of the invention comprises: a) heating at least one low molecular weight aromatic hydrocarbon in the presence of a Lewis acid under conditions sufficient to produce a pitch of desired composition and properties; b) recovering a pitch of desired composition and properties. The process of the invention may be used to produce pitch which can be used in roofing and binder applications.

5043214, Aug 27, 1991

Feb 26, 1990

7/484337

Sajal Das - Parsippany NJ
Dusan C. Prevorsek - Morristown NJ
Raj Sharma - Morristown NJ
Bruce DeBona - Randolph NJ

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

D02G 300
C08G 828

428359

The present invention is flame resistant article and related method, made of phenolic triazine resin derived from a cyanato group containing phenolic resin of the formula: ##STR1## wherein: n is a positive whole number greater than or equal to 1; q and r are the same or different at each occurrence and are whole numbers from 0 to 3, with the proviso that the sum of q and r at each occurrence is equal to 3; Z is --CN, or hydrogen and --CN; o and p are the same or different at each occurrence and are whole numbers from 0 to 4 with the proviso that the sum of o and p at each occurrence is equal to 4; --X-- is a divalent organic radical; and R. sub. 3 is the same or different at each occurrence and is a substituent other than hydrogen which is unreactive under conditions necessary to completely cure the copolymer.

4988780, Jan 29, 1991

Aug 15, 1988

7/232407

Sajal Das - Parsippany NJ
Dusan C. Prevorsek - Morristown NJ
Raj Sharma - Morristown NJ
Bruce DeBona - Randolph NJ

Allied-Signal - Morris Township, Morris County NJ

C08G 828
C08L 6106

525504

The present invention is flame resistant article and related method, made of phenolic triazine resin derived from a cyanato group containing phenolic resin of the formula: ##STR1## wherein: n is a positive whole number greater than or equal to 1; q and r are the same or different at each occurrence and are whole numbers from 0 to 3, with the proviso that the sum of q and r at each occurrence is equal to 3; Z is --CN, or hydrogen and --CN; o and p are the same or different at each occurrence and are whole numbers from 0 to 4 with the proviso that the sum of o and p at each occurrence is equal to 4; --X-- is a divalent organic radical; and R. sub. 3 is the same or different at each occurrence and is a substituent other than hydrogen which is unreactive under conditions necessary to completely cure the copolymer.

4165634, Aug 28, 1979

Feb 6, 1978

5/875712

Dusan C. Prevorsek - Morristown NJ
Young D. Kwon - Morristown NJ
Raj K. Sharma - Morristown NJ

Allied Chemical Corporation - Morris Township, Morris County NJ

G01N 332

73810

An improved apparatus and process are described for measuring linear and non-linear viscoelastic properties of viscoelastic materials such as nylon, polyester tire cord, rubber, rubber-tire cord composites and the like. The properties are determined by subjecting a sample material to a constant-rate strain displacement having a small amplitude high frequency sinusoidal strain displacement superimposed thereon, and analyzing the overall resulting material stress. The obtained properties can be used to predict and estimate actual end use characteristics of the material such as longevity and mechanical loss during performance. In the case of tire cord, this latter characteristic can be surprisingly related to efficiency of fuel consumption in automotive vehicles.

3934452, Jan 27, 1976

Dec 2, 1974

5/528610

Dusan Cyril Prevorsek - Morristown NJ
Young Doo Kwon - Morristown NJ
Raj Kumar Sharma - Morristown NJ

Allied Chemical Corporation - New York NY

G01N 332

73 156

A method for determining strain amplitudes in each component, during cyclic straining of a 2-component structure in which at least one component shows non-linear viscoelastic behavior. The heat generation rates of each component are determined experimentally, at various temperatures, as functions of the experimentally imposed strain amplitudes. These functions are used to solve, by computer, a heat balance equation involving temperature values through the structure. To find pairs of strain amplitudes which produce observed temperatures, the value of strain amplitude entering into the equations for one component is varied (for each value of a set of strain amplitudes of the other component) until the temperature at a selected point of the structure, thus calculated, matches the temperature determined experimentally; and likewise for a second selected point. The desired pair of strain amplitudes is thus identified as being a pair which produces a match of calculated vs. measured temperature at both selected points.

3969930, Jul 20, 1976

Apr 10, 1975

5/567144

Dusan Ciril Prevorsek - Morristown NJ
Young Doo Kwon - Morristown NJ
Raj Kumar Sharma - Morristown NJ
Edward T. Gilliam - Lake Hiawatha NJ

Allied Chemical Corporation - Morris Township NJ

G01N 334

73 91

An apparatus and method for testing viscoelastic solids, such as tire cord. The apparatus includes: a holding means, a pretension means, a displacement generator, and a mechanical-electrical transforming means. The holding means holds the material in a predetermined position. The pretension means applies tension during testing. The displacement generator has an eccentric means for applying cyclic displacement. The mechanical-electrical transforming means transforms mechanical motion into electrical signals, such as a stress signal, a strain signal and a differentiated strain signal. There is a phase lag between the stress signal and the strain signal and the phase lag may vary in amount and direction as a function of time. The apparatus may also include: an integrating means for integration of a stress-strain hysteresis loop; and a display means for displaying an output of the integrating means to measure the area of the hysteresis loop and thereby determine energy loss. The method includes: applying strain to the material, with resulting stress developed in the material; transforming the strain into an electrical strain signal having a strain wave form; transforming the resulting stress into an electrical stress signal having a stress wave form; controlling the strain to produce a substantially sinusoidal strain wave form representing strain; and allowing the stress to produce a stress wave form representing stress which may be non-sinusoidal or sinusoidal.