Fred A Desiderio

US Patent:

42568099, Mar 17, 1981

Filed:

Feb 2, 1979

Appl. No.:

6/009022

Inventors:

Bjorn E. Larsson - Rushland PA
Fred A. Desiderio - Cornwells Heights PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

B32B 904

US Classification:

428473

Abstract:

Ambient or low-temperature curable aqueous dispersions of (1) an emulsion polymer containing units polymerized from a monomer mixture of (a) from about 0. 25% to about 10% by weight of a polymerizable aldehyde, (b) from about 0. 5% to about 10% by weight of an ethylenically unsaturated carboxylic acid, and (c) up to about 99. 25% by weight of at least one copolymerizable mono-ethylenically unsaturated monomer, with (2) a curing agent selected from the group of dicarboxylic acid bis-hydrazides and bis-hydrazones are disclosed. The dispersions are useful in leather treating compositions, especially in top coat compositions. A process for producing fully finished leather, or leather substitutes is also disclosed.

US Patent:

41606426, Jul 10, 1979

Filed:

Sep 17, 1975

Appl. No.:

5/614120

Inventors:

Fred A. Desiderio - Cornwells Heights PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

D06P 332

US Classification:

8 12

Abstract:

A method is disclosed for improving the solubility of Lewis acid dyes including metal chelate dyes and acid dyes, in solvents employing a copolymer based on a monomer containing a 5- or 6-membered heterocyclic tertiary amine. Dye solutions prepared by this process are useful in dyeing leather, in dyeing coatings and plastic articles, and are especially useful in combination with reactive urethane systems.

US Patent:

39543978, May 4, 1976

Filed:

Jul 16, 1973

Appl. No.:

5/379530

Inventors:

Fred A. Desiderio - Cornwells Heights PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C09B 2700
D06P 312
C09B 4500
C14C 900

US Classification:

8 41R

Abstract:

A method is disclosed for improving the solubility of Lewis acid dyes including metal chelate dyes and acid dyes, in solvent employing a 5- or 6-membered heterocyclic tertiary amine. Dye solutions prepared by this process are useful in dyeing leather, in dyeing coatings and plastic articles, and are especially useful in combination with reactive urethane systems.