| (19) |
 |
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(11) |
EP 0 044 695 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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01.12.1982 Bulletin 1982/48 |
| (43) |
Date of publication A2: |
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27.01.1982 Bulletin 1982/04 |
| (22) |
Date of filing: 14.07.1981 |
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| (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. |
|
() |
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| |
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| (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.