Max E Roha

US Patent:

52410200, Aug 31, 1993

Filed:

Oct 22, 1990

Appl. No.:

7/602058

Inventors:

Max Roha - Brecksville OH

International Classification:

C08F28304

US Classification:

525455

Abstract:

Novel blends of polymers are produced by polymerizing interreactive compounds that form polymers in a non-free radical polymerization, and at least one monomer possessing carbon-to-carbon double bonds capable of polymerization by means of a free radical mechanism, in the presence of reactive initiators. In a preferred mode, a reaction mixture is formed comprising the interactive compounds, the monomers, and the reactive initiators. The interactive compounds are reacted in a initial step to form a first polymer connected to the reactive initiator. In a subsequent reaction, free radicals derived from the reactive initiator promote polymerization of the monomers to form a second polymer. The first polymer forms the continuous phase of the blend, while the second polymer comprises the discontinuous phase. As a consequence of the enhanced inter-phase adhesion resulting from the interaction of the reactive initiators with both polymers, the blends display superior tensile strengths, elastic recovery, and increased elongation at break.

US Patent:

47145676, Dec 22, 1987

Filed:

Oct 31, 1985

Appl. No.:

6/793281

Inventors:

Max E. Roha - Brecksville OH

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

B01J 1300

US Classification:

2523152

Abstract:

A stable monolithic gel produced by reacting an alumina hydrate sol with an organic reactant selected from the group consisting of polycarboxylic acids having esterified acid groups, anhydrides of polycarboxylic acids, and water-soluble cationic or neutral polyacrylamides. A particularly preferred gel is made by reacting an alumina monohydrate sol with dimethyl oxalate. The preferred monolithic gel remains transparent or slightly cloudy upon storage with little syneresis.

US Patent:

49507109, Aug 21, 1990

Filed:

Feb 8, 1988

Appl. No.:

7/153763

Inventors:

Max E. Roha - Brecksville OH

Assignee:

Aluminum Company of America - Pittsburgh PA

International Classification:

C08K 336
C08K 334
C08K 322
C08K 714

US Classification:

524786

Abstract:

A composite comprising the reaction product of a filler having a reactive hydroxylated surface, a monomer or polymer containing carboxyl groups, and an organoaluminum compound, the organoaluminum compound being reacted with said hydroxylated surface and with said monomer or polymer. A preferred composite is made by reacting aluminum sec-butoxide with fiberglass and acrylic acid and methyl methacrylate under polymerization conditions.