Steven R Hopper

US Patent:

43841317, May 17, 1983

Filed:

Jul 13, 1982

Appl. No.:

6/397814

Inventors:

Bernard Kanner - West Nyack NY
Steven P. Hopper - Mahopac NY

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

C07F 710
C07F 718

US Classification:

556422

Abstract:

A process whereby silanes of the general formula HSi(NRR. sup. I). sub. x (R. sup. II). sub. 3-x are reacted in the presence of a catalyst with oximes or hydroxylamines in the stoichiometry of approximately one equivalent of oxime or hydroxylamine per mole of silicon-nitrogen linkage to give unexpectedly high yields of substituted silanes.

US Patent:

47895640, Dec 6, 1988

Filed:

Mar 31, 1987

Appl. No.:

7/032377

Inventors:

Bernard Kanner - West Nyack NY
Roswell E. King - Pleasantville NY
Steven P. Hopper - Glen Ellyn IL

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

B05D 302
C23C 1600

US Classification:

4272556

Abstract:

Surfaces containing hydroxyl groups are rendered water-repellent through exposure to hydridoaminosilanes of the general formula H. sub. x Si(NRH). sub. y (NR. sub. 2. sup. 1). sub. 3-y In particular, tris(dimethylamino)silane and its derivatives have been found to make substrates with hydroxyl-containing surfaces hydrophobic without adversely effecting the physical properties of the substrate being treated and without the necessity of and pre- or post-treatment steps (i. e. moisturizing, neutralizing, etc. ).

US Patent:

46754245, Jun 23, 1987

Filed:

Mar 19, 1986

Appl. No.:

6/841545

Inventors:

Roswell E. King - Pleasantville NY
Bernard Kanner - West Nyack NY
Steven P. Hopper - Carmel NY
Curtis L. Schilling - Croton-on-Hudson NY

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

C07F 710

US Classification:

556412

Abstract:

A method of preparing silazane polymers, with 3 or more repeating units, of the general formula --((CH. sub. 3). sub. 2 N). sub. e Si(R). sub. a (R'HN). sub. f H. sub. c (NR'). sub. g -- and a (CH. sub. 3). sub. 2 NH byproduct group where R is hydrogen, an alkyl group having 1-6 carbon atoms or an aryl group having 6-12 carbon atoms, a=0, or 1, b=2-4, C=0-2, d=0 or 1, e=0-2, f=0-2, g=1-3 and a+c+e+f+g=4 for the polymer units; and R' is hydrogen or methyl, whereby the silazane polymer is substantially free of halide impurities, and wherein this method comprises: transaminating an aminosilane of the general formula (R). sub. a ((CH. sub. 3). sub. 2 N). sub. b H. sub. c S; where R is defined as above and a+b+c=4 with an amine of the general formula (CH. sub. 3). sub. d NH. sub. 3-d whereby d is defined as above and the amine has a molecular weight lower than 45 all in the presence of an acid catalyst or the ammonium salt of the acid and thereafter condensing to form the polymer.

US Patent:

44005261, Aug 23, 1983

Filed:

Sep 30, 1982

Appl. No.:

6/430373

Inventors:

Bernard Kanner - West Nyack NY
Curtis L. Schilling - Croton-On-Hudson NY
Steven P. Hopper - Mahopac NY

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

C07F 710

US Classification:

556420

Abstract:

A hydrogen bearing silyl carbamate of the general formula: HSiR. sub. n (O. sub. 2 CNR'R"). sub. 3-n is synthesized from hydrogen bearing aminosilane and gaseous carbon dioxide. The resulting hydrogen bearing silyl carbamate is novel in the single hydrogen attached to the silyl carbamate and represents a major new compound for creating novel compositions of matter.

US Patent:

45567255, Dec 3, 1985

Filed:

Jan 24, 1985

Appl. No.:

6/694307

Inventors:

Bernard Kanner - West Nyack NY
Jennifer M. Quirk - Bedford Hills NY
Arthur P. De Monte - Brooklyn NY
Steven P. Hopper - Mahopac NY

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

C07F 708
C07F 718

US Classification:

556442

Abstract:

Triacetoxysilanes are prepared by adding a tris(amino)silane to acetic anhydride and maintaining the reaction mix at a temperature no greater than about 50. degree. C.

US Patent:

44967543, Jan 29, 1985

Filed:

Dec 28, 1982

Appl. No.:

6/454178

Inventors:

Bernard Kanner - West Nyack NY
Steven P. Hopper - Mahopac NY
Dennis J. Sepelak - McMurray PA

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

C07F 710
C07F 718

US Classification:

556420

Abstract:

Silyl carbamates are produced by the reaction under suitable reaction conditions of silanes bearing at least one silicon-hydrogen bond of the formula: R. sub. 4-x SiH. sub. x with an ammonium carbamate of the formula: R'R"NH. sub. 2. sup. sym. R'R"NCO. sub. 2. sup. crclbar. This novel route is much simpler and more direct than those previously known and provides a new classes of silyl carbamates.

US Patent:

43955649, Jul 26, 1983

Filed:

Jul 13, 1982

Appl. No.:

6/397815

Inventors:

Bernard Kanner - West Nyack NY
Steven P. Hopper - Mahopac NY

Assignee:

Union Carbide Corporation - Danbury CT

International Classification:

C07F 708
C07F 710
C07F 718

US Classification:

556470

Abstract:

A process whereby silanes of the general formula: HSi(NRR'). sub. x (R"). sub. 3-x wherein R, R' and R" are independently an aliphatic or aromatic, substituted or unsubstituted, saturated or unsaturated hydrocarbon radical having from one to eight carbon atoms, inclusive and R and R' may also be hydrogen and where R" may also be alkoxy and where x has a value from one to three are reacted in the presence of a catalyst with alcohols in the stoichiometry of approximately one equivalent of alcohol per mole of silicon-nitrogen bond to give unexpectedly high yields of alkoxyhydridosilanes. In the reaction the silyl amine groups have been replaced by alkoxide groups without significant loss of the silicon-hydrogen group. Similar reactions in the absence of a catalyst give undesirably low yields of the corresponding alkoxy silanes and, in most cases, substantial loss of silyl hydrogen groups.