Process for preparing polyurethane resins colored with anthraqui

Details Process for preparing polyurethane resins colored with anthraqui Process for preparing polyurethane resins colored with anthraqui

1988-06-20

1989-07-11

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Polymer from isocyanate and polyol, e.g., polyurethane,...

8403, 8675, 8678, 8926, 8477, D06P 324

Patent

active

048468460

ABSTRACT:
A process for coloring polyurethane resins made by a polyaddition reaction of a polyol and an isocyanate is provided, which comprises adding to the reaction mixture before or during the polyaddition reaction a reactive coloring agent suitable for incorporation in the resin with the formation of covalent bonds, said coloring agent having the formula: ##STR1## in which R.sub.1 and R.sub.2 are independently selected from an alkyl group having from 1 to about 12 carbon atoms, X is --CH.sub.2 --, a and a' are integers from 1 to about 6, and Y and Y' are independently selected from polymeric units of hydroxy alkylenes or alkylene oxide monomers selected from ethylene oxide, propylene oxide, butylene oxide, cyclohexene oxide, or glycidol, b and b' are independently either 0 or 1, and Z and Z' are reactive groups independently selected from --OH, --NH.sub.2, or --SH.

REFERENCES:
patent: 3157633 (1964-11-01), Kuhn
patent: 3994835 (1976-11-01), Wolf et al.
patent: 4132840 (1979-01-01), Hugl et al.
patent: 4137243 (1979-01-01), Farmer
patent: 4284729 (1981-08-01), Cross et al.
patent: 4507407 (1985-03-01), Kluger et al.

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