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Primary Examiner: Levy, Donald
Assistant Examiner:
Attorney: Anderson; Richard A.

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Title: Substituted thioureas to inhibit ozone fading of dyed polyamides

Abstract: When from about 0.5% to about 5% of N,N'-disubstituted thioureas are coated on nylon fiber, improved dyefastness is achieved compared to an untreated dyed nylon fiber when this fiber is exposed to ozone.

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Other info:

Inventors: Lofquist, Robert A. (Richmond, VA, US)
Saunders, Peter R. (Richmond, VA, US)

Application Number: 402543
Filing Date: 1973-10-01
Publication_date: 1978-08-08
Assignee: Allied Chemical Corporation (Morris Township, Morris County, NJ)
Primary Class(es): 8/585 8/474, 8/643, 8/924, 8/929
Other Classes:
US Patent Ref:

1985248	Dec, 1934	Ellis	8/165.
2583370	Jan, 1952	Goppel et al.	260/769.
3024218	Mar, 1962	Steven	260/769.
3584993	Jun, 1971	Myles	8/165.
3822996	Jul, 1974	Lofquist et al.	8/74.

Other Refs: Other References: Salvin, American Dyestuff Reporter, 1952, pp. 297-303.
Salvin, Amer. Dyestuff Rep., Feb. 1968, pp. 156-159.
American Dyestuff Reporter, pp. 33-41, 1/6/64.
Textile Research J., vol. XXV, No. 7, Jul. 1955, pp. 571-585.