Fibers and fabrics containing optical brightening agents

Details Fibers and fabrics containing optical brightening agents Fibers and fabrics containing optical brightening agents

1974-11-04

1976-09-28

Smith, Ronald H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

25230126, 427158, 428262, 428265, 428267, 428375, 428393, 428394, 428395, 428396, B32B 700, D02G 300

Patent

active

039832880

ABSTRACT:
Quaternary salts having a pyrido-[1,2-a]-indole nucleus are useful optical brightening agents for synthetic and natural fibers and fabrics. The quaternary salts are especially useful optical brighteners for paper and acrylic fibers.

REFERENCES:
patent: 2886569 (1959-05-01), Erner
patent: 3269955 (1966-08-01), Rodgers et al.
patent: 3322680 (1967-05-01), Hedbeig et al.
patent: 3449257 (1969-06-01), Tuite et al.
patent: 3583984 (1971-06-01), Crounse
patent: 3690916 (1972-09-01), Wegmuller et al.
Robinson et al., J. Chem. Soc., pp. 976-982, (1952).
Holland et al., J. Chem. Soc., pp. 1657-1662, (1955).

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