A detailed study has been made of the photoprotective effect afforded to wool fabric against irradiation (by simulated sunlight or natural sunlight through glass) by the 2-(2'-hydroxyaryl)-2H-benzothazole ultraviolet absorber, sulfonated Tinuvin P. The degree of photoprotection depends on the amount of absorber applied to the wool and the pH at which it is applied. Wool dyed with representative acid dyes was also protected to a significant extent by the absorber against both phototendering and dye fading.
References
1.
Cegarra, J., Ribe, J., and Miro, P., Use of 2,4-Dihydroxybenzophenone-2'-Ammonium Sulphonate to Prevent the Yellowing of Wool by Ultraviolet Radiation, J. Soc. Dyers Colour.88, 293-296 (1972).
2.
Dexter, M., UV Stabilizers, in "Encyclopedia of Chemical Technology"3rd ed. (Kirk-Othmer), Wiley Interscience, vol. 23, 1983, pp. 615-627.
3.
Evans, N.A., Leaver, I.H., Rosevear, J., Waters, P.J., and Wilshire, J.F.K. , Use of Substituted 2-(2'-Hydroxyaryl)-2H-Benzotriazole-Sulfonates as Photostabilizing Agents, Australian Patent Application no. PF7151/82, December 6, 1982.
4.
Hindson, W.R., and Southwell, G., TheMercury-Tungsten Fluorescent Lamp for the Fading-Assessment of Textiles, Textile Inst. Ind. 12, 42-45 (1974).
5.
Leaver, I.H. , Waters, P.J., and Evans, N.A., Dual Role of a Hydroxyphenylbenzotriazole UV Absorber in the Photooxidation of Wool, J. Polym. Sci. Polym. Chem. Ed.17, 1531-1541 (1979 ).
Milligan, B., Sunlight Yellowing of White Wool: A Complex Problem, in "Proc. 6th Int. Wool Text. Res. Conf, Pretoria ," vol. V, 1980, pp. 167-181.
8.
Milligan, B. , and Holt, L.A., Ultraviolet Absorbers for Retarding Wool Photodegradation: Sulphonated Long-Chain Substituted 2-Hydroxybenzophenones , Polym. Degrad. Stab.5, 339-353 (1983).
9.
Nicholls, C.H. , Photodegradation and Photoyellowing of Wool , in "Developments in Polymer Photochemistry," vol. 1, N. S. Allen, Ed., Applied Science Publishers Ltd., London, 1980, pp. 125-144.
10.
Rose, W.G., Walden, M.K., and Moore, J.E., Comparison of Ultraviolet Light Absorbers for Protection of Wool Against Yellowing , Textile Res. J.31, 495-503 (1961).
11.
Simpson, W.S. , and Page, C.T., Inhibition of Light Tendering of Wool, in "Proc. 6th Int. Wool. Text. Res. Conf, Pretoria," vol. V, 1980, pp. 183-193.
12.
Waters, P.J. , and Evans, N.A., TheEffect of Phenyl-benzotriazole Derivatives on the Photoyellowing of Wool, Textile Res. J.48, 251-255 (1978).
13.
Waters, P.J. , Evans, N.A., Holt, L.A., and Milligan , B., The Use of Ultraviolet Absorbers for Reducing the Chemical and Physical Damage caused by Prolonged Exposure of Wool to Light, in " Proc. 6th Int. Wool Text. Res. Conf, Pretoria," vol. V, 1980, pp. 195-205.
14.
Waters, P.J. , and Evans, N.A., Abrasion Resistance of Ultraviolet Irradiated Wool - Effect of a Benzotriazole Photostabilizer, J. Textile Inst.74, 99-100 (1983).
