Arthur Donald Ketley

US Patent:

41548728, May 15, 1979

Filed:

May 9, 1978

Appl. No.:

5/904158

Inventors:

Jung-Hsien Tsao - Columbia MD
Arthur D. Ketley - Columbia MD

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

C08F 246
C08F 400

US Classification:

427 44

Abstract:

This invention relates to a process for preparing a catalytic solution of a sulfonium salt of a complex anion, capable of yielding a Lewis Acid when irradiated by UV or high energy ionizing radiation comprising reacting a sulfonium halide with an alkali metal salt of the complex anion in a solvent mixture containing a polyol having at least two hydroxy groups and a lactone.

US Patent:

44068263, Sep 27, 1983

Filed:

Mar 5, 1981

Appl. No.:

6/241144

Inventors:

Charles R. Morgan - Brookeville MD
Arthur D. Ketley - Chevy Chase MD

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

H01B 102
B05D 306

US Classification:

252512

Abstract:

This invention relates to a heat curing process and to a solventless screen printable, heat curable conductive ink composition comprising (1) an ethylenically unsaturated member of the group consisting of (a) a liquid, ethylenically, unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH. sub. 3, R. sub. 1 is an organic moiety and n is at least 2, (b) a polythiol in combination with (a) supra, (c) a polythiol in combination with a liquid ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR2## wherein R. sub. 2 is H or CH. sub. 3, R. sub. 3 is an organic moiety and n is at least 2, and (d) mixtures of (a), (b) and (c), (2) a thermal initiator, and (3) an electrically conductive material. Heating of the composition in a desired pattern on a substrate results in a printed electric circuit.

US Patent:

54182794, May 23, 1995

Filed:

Apr 28, 1994

Appl. No.:

8/235005

Inventors:

Jie Ren - Woodstock MD
William P. Roberts - Simpsonville SC
Arthur D. Ketley - Silver Spring MD

Assignee:

W. R. Grace & Co.-Conn. - New York NY

International Classification:

C08J 318
C08K 549

US Classification:

524577

Abstract:

Stereoregular polystyrenes can be combined with a plasticizer to make a non-PVC plastisol with physical properties comparable to PVC-based plastisols.

US Patent:

41794001, Dec 18, 1979

Filed:

Jan 25, 1979

Appl. No.:

6/006322

Inventors:

Jung-Hsien Tsao - Columbia MD
Arthur D. Ketley - Columbia MD

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

B01J 3102

US Classification:

252429R

Abstract:

This invention relates to a process for preparing a catalytic solution of a sulfonium salt of a complex anion, capable of yielding a Lewis Acid when irradiated by UV or high energy ionizing radiation comprising reacting a sulfonium halide with an alkali metal salt of the complex anion in a solvent mixture containing a polyol having at least two hydroxy groups and a lactone.

US Patent:

42040108, May 20, 1980

Filed:

Dec 21, 1978

Appl. No.:

5/972127

Inventors:

David E. Kramm - Laurel MD
Arthur D. Ketley - Columbia MD

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

B05D 306

US Classification:

427 44

Abstract:

This invention relates to an ethylenically unsaturated reactive thixotropic agent for use in radiation curable compositions, e. g. , overprint varnishes, formed by reacting a hydroxyl-containing fatty acid ester with an ethylenically unsaturated isocyanate. The agent not only performs its thixotropic function in the uncured state but also forms part of the cured product on exposure to radiation, e. g. , UV radiation due to its substantially similar reactivity.

US Patent:

45915229, May 27, 1986

Filed:

Jan 4, 1985

Appl. No.:

6/688856

Inventors:

Uan G. Kang - Columbia MD
Richard W. Bush - Columbia MD
Arthur D. Ketley - Chevy Chase MD
Clifford A. Ferrin - Baltimore MD

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

B05D 306

US Classification:

428419

Abstract:

Novel fire-retardant and hydrolysis resistant, liquid, photosensitive compositions are disclosed comprising (1) the reaction product of (a) an aliphatic unsaturation containing chlorendate, and (b) a non-ester containing polythiol, said (a) and (b) being reacted non-stoichiometrically; (2) a member of the group consisting of either (a) or (b) in an amount up to that sufficient to react with the excess of the other in (1) and a liquid acrylate monomer or oligomer, and (3) at least one photoinitiator. Acrylates or methacrylate monomers are optionally added to the composition.

US Patent:

41207211, Oct 17, 1978

Filed:

Jun 2, 1977

Appl. No.:

5/802706

Inventors:

Arthur Donald Ketley - Columbia MD
Paul Richard Hein - Marietta GA
Michael Wen-Chien Yang - Marietta GA

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

B05D 306

US Classification:

96 363

Abstract:

This invention relates to a liquid radiation curable composition useful for coating and imaging which comprises (1) an acrylic or methacrylic terminated, urethane containing polyene, (2) a non-water soluble vinyl monomer diluent, preferably an acrylate or methacrylate monomer diluent, (3) a polythiol containing at least two thiol groups per molecule and (4) a photoinitiator. The composition on exposure to radiation, e. g. , a U. V. light source, cures to a solid polythioether.

US Patent:

41256441, Nov 14, 1978

Filed:

May 11, 1977

Appl. No.:

5/795997

Inventors:

Arthur D. Ketley - Columbia MD
Charles R. Morgan - Brookeville MD

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

G02B 110
G02B 514

US Classification:

427 36

Abstract:

A continuous protective coating is formed on a fiber optic by coating said fiber optic in a bath of a liquid radiation curable composition at a temperature up to 90. degree. C and thereafter exposing the coated conductor to ultraviolet or high energy ionizing radiation to cure the coating.