C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 11/06 (2006.01) C08K 5/17 (2006.01) C09D 7/12 (2006.01) C09D 11/00 (2006.01) C11D 3/42 (2006.01) D06L 3/12 (2006.01)
Patent
CA 2329797
This invention relates to water-soluble complexes of optical brighteners with quaternary ammonium compounds which are substantially free from unwanted salts. Such complexes are formed through ionic bonds formed between the two compounds. The inventive complexes are then removed of substantially all excess unwanted salt so as to obtain an optical brightener compound which easily solubilizes within, dispenses from, and exhibits excellent compatibility with standard detergent and softener compositions, which exhibits the desired degree of affinity for various substrate surfaces, including textile, paper, wood, and plastics, as well as within leak detector formulations, and which provides a desired accumulation effect on substrate surfaces upon repeated treatments. Such inventive complexes can also be utilized to whiten thermoplastics and thermosets. Furthermore, this invention also concerns methods of making and utilizing such inventive optical brightening complexes.
L'invention porte sur des complexes hydrosolubles d'azurants optiques et d'ammonium quaternaire sensiblement exempts de sels non désirés et formés par l'intermédiaire de liaisons ioniques reliant les deux composés. On élimine ensuite desdits complexes la quasi-totalité des sels non désirés en excès, ce qui donne un azurant optique facilement soluble et très compatible avec les détergents et adoucissants usuels dont il peut se passer, et qui présente le niveau requis d'affinité avec différentes surfaces de substrats dont les textiles, le papier, le bois et les plastiques, ainsi qu'avec les produits détecteurs de fuites, et produit l'effet d'accumulation désiré sur la surface de substrats après des traitements répétés. Ces complexes peuvent également servir à blanchir les résines thermoplastiques et thermodurcissables. L'invention porte également sur des procédés de fabrication et d'utilisation desdits complexes.
Ann Qinghong Jessica
Spry James Michael
Zhao Xiaodong Edward
Gowling Lafleur Henderson Llp
Milliken & Company
Milliken Research Corporation
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