(19)
(11) EP 0 044 695 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.12.1982 Bulletin 1982/48

(43) Date of publication A2:
27.01.1982 Bulletin 1982/04

(21) Application number: 81303236

(22) Date of filing: 14.07.1981
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 17.07.1980 US 169578

(71) Applicant: MERCK & CO. INC.
 ()

(72) Inventor:
  • Yin, Robert I
     ()

   


(54) Blends of algin, tamarind, and a polycationic electroconductive polymer


(57) A novel blend of two components: (a) a blend of algin and tamarind and (b) a polycationic electroconductive polymer is used as a paper-coating composition. The paper coated above has improvement in film-forming, reduction in air porosity, and an increase in oil and solvent holdout. The blend is in the form of an aqueous solution comprising 12% Conductive Polymer 261 and 0.4% of a blend of tamarind kernel powder and sodium alginate, 4:1 weight ratio. The coating on the paper will comprise 90-98.4% by weight Conductive Polymer 261 and 1.6-4% by weight of a blend of tamarind kernel powder and sodium alginate, 4:1 weight ratio.





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