C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/00 (2006.01) C08K 5/17 (2006.01) C09B 62/465 (2006.01) C09B 67/54 (2006.01) C09B 69/04 (2006.01)
Patent
CA 2329917
This invention relates to solid complexes of anionic dyes with quaternary ammonium compounds which have average molecular weights of below about 900 which are substantially free from unwanted salts. Of particular interest as quaternary ammonium compounds are those which comprise alkoxylated moieties. Such complexes are formed through ionic bonds formed between the two compounds. The complexes are then removed of substantially all resultant unwanted salt formed from the cations of the dye and the counter-ions of the quat so as to obtain a solid dyeing agent which easily disperses within different media and which possess extremely good non-migration and coloring characteristics. This invention also concerns methods of making the aforementioned salt-free solid anionic dye/quat complexes as well as methods of utilizing such complexes for dyeing thermoplastic, thermoset, and wax compositions.
L'invention porte sur des complexes solides de colorants organiques anioniques et de composés d'ammonium quaternaire d'un poids moléculaire inférieur à 900, et sensiblement exempts de sels non désirés, les composés d'ammonium quaternaire d'intérêt particulier comportant des fragments alkoxylés. Lesdits complexes sont formés par l'intermédiaire de liaisons ioniques reliant les deux composés. On élimine ensuite des complexes la quasi-totalité des sels résultants non désirés formés à partir des cations des colorants et des ions antagonistes de l'ammonium quaternaire, ce qui donne un colorant solide se dispersant aisément dans différents supports, très peu susceptible de migrations, et à fort pouvoir colorant. L'invention porte également sur des procédés d'élaboration des susdits complexes et sur leurs procédés d'utilisation pour colorer des compositions thermoplastiques, thermodurcissables et cireuses.
Mahaffey Robert L. Jr.
Suddeth Kaye Cannon
Zhao Xiaodong Edward
Gowling Lafleur Henderson Llp
Milliken & Company
Milliken Research Corporation
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