PATENT ASSIGNEE'S COUNTRY | Germany |
UPDATE | 10.00 |
PATENT ASSIGNEE | This data is not available for free |
PATENT CLAIMS |
(a) Adding (1) & (2) water-soluble cationic polymers in succession to pulp, after addition, the pulp is subjected to at least one shearing stage, & flocculating mixt by adding a flocculating agent selected from bentonite, colloidal silica & clay (B) Forming a sheet from mixt (C) Drying sheet Wherein (1) is Poly(Ethyleneimine) with MW > 500,000 in amount 0.001-0.8% (2) Poly(Acrylamide), MW > 4,000,000 in amount 0.001-0.8% |
PATENT PHOTOCOPY | Available on request |
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