Ernest R Freeman

US Patent:

42696020, May 26, 1981

Filed:

May 7, 1979

Appl. No.:

6/036641

Inventors:

Daniel L. Worth - Greenwood SC
Ernest A. Freeman - Ware Shoals SC

Assignee:

Riegel Textile Corporation - New York NY

International Classification:

D06M 132
D06M 1530

US Classification:

81164

Abstract:

This invention relates to a durable press treatment for textile fabrics containing cellulosic fibers and which is characterized by avoiding the use of formaldehyde and problems associated therewith. The fabric is impregnated with a formaldehyde-free finishing agent containing glyoxal, reactive silicone, a catalyst and a buffering agent for reducing the acidity of the fabric. The fabric is thereafter dried and the finishing agent is cured to impart durable press properties to the fabric.

US Patent:

41652886, Aug 21, 1979

Filed:

Jul 5, 1977

Appl. No.:

5/812911

Inventors:

Richard K. Teed - Greenwood SC
Ernest A. Freeman - Ware Shoals SC

Assignee:

Riegel Textile Corporation - New York NY

International Classification:

B01D 1300
B01D 3100

US Classification:

210 23H

Abstract:

Process of treating waste water from a textile vat dyeing operation containing water, vat dyes, and dissolved and undissolved impurities including salts, lint, foreign matter, etc. to produce a concentrate suitable for direct reuse in the vat dyeing operation to conserve the use of dyes and water, as follows. Undissolved impurities of a predetermined particle size are filtered out. Thereafter, the waste water is concentrated and filtered down to a concentrate of a ratio of from about 30/1 to 200/1 while removing excess water and a substantial portion of the remaining impurities and retaining substantially all of the vat dyes and a desired amount of water. The latter step is preferably performed by circulating the waste water through a reverse osmosis filtration device, while separating the waste water into a permeate containing excess water an a substantial portion of the remaining impurities including salts and a concentrate containing substantially all of the vat dyes and a desired amount of water, and by removing the permeate and retaining the concentrate for use in the dyeing operation.