摘要:
This invention relates to a composition for treating inorganic slurries and to a method of treating inorganic slurries with the aforesaid composition so as to maintain the slurries in a substantially homogeneous phase. The composition comprises a THP + salt and a dispersant selected from the group consisting of: (i) phosphonated compound containing at least one tertiary nitrogen atom; (ii) phosphonated oligomers of unsaturated acids; (iii) homopolymers of unsaturated acids; and (iv) Polyphosphates The THP + salt is preferably THPS
摘要:
Coding composition for a curtain coater whereby a moving web of paper, card or other fibrous material is to be coated one or more times on one or both of the sides comprising lubricants as well as pigments and binders.
摘要:
A paper or paper board coated with an aqueous paper coating composition containing pigment having a phosphorous-containing emulsion polymer and a phosphorous-containing dispersant.
摘要:
Die Erfindung betrifft ein migrationsbeständiges Papier bestehend aus gebleichtem oder ungebleichten Papier, wobei das Papier mit einer Beschichtung auf Basis einer Dispersion eines Acryl- oder Ethylenacrylatpolymers oder Methacrylatpolymers, eines Acryl-Styrol- oder Butadien-Styrolpolmers, eines Polyvinylalkohol, eines Polyurethans, eines Polyvinylidenchlorids oder eines Polyesteracrylats oder deren Copolymere oder deren Mischungen aufgebaut ist.
摘要:
Silica-calcium carbonate composite particles, characterized in that they are produced by a method wherein, in a carbonation step of forming calcium carbonate, typically a step of introducing a mixed gas of carbon dioxide and air into a calcium hydroxide slurry with stirring to carry out a carbonization reaction, a synthetic silica such as colloidal silica is added in a period after the start of the carbonization and before carbonization percentage reaches 95 %, the mixed gas is continuously introduced thereafter to continue the carbonization, and the carbonization is stopped when the pH of the slurry reaches 7; a paper having said particles filled therein; and the above method. Said composite particles have both of the characteristics inherent in a synthetic silica and in calcium carbonate, without detriment to the characteristics.
摘要:
A method for treating solid-containing material contained in or produced from waste paper or an effluent from a plant for treating paper or paper waste, the solid-containing material including organic material and inorganic particulate material, the method comprising subjecting the solid-containing material to a heat treatment which incinerates the organic material present and forms a calcined product from the inorganic particulate material present, and characterised in that the calcined product is formed into an aqueous suspension which includes a salt-forming cationic species and a reagent which contains or generates a salt-forming anionic species is added to the suspension to form an insoluble salt precipitate therein. The solid-containing material treated by the method may include calcium carbonate, whereby calcium oxide is formed in the heat treatment by decomposition of at least part of the calcium carbonate present, and wherein the calcium oxide is converted to calcium hydroxide when the calcined product is formed into an aqueous suspension, the said salt-forming cationic species comprising calcium ions derived from the calcium hydroxide and wherein the said reagent comprising a salt-forming anionic species comprises carbon dioxide whereby the precipitate comprises calcium carbonate.
摘要:
A coating composition comprised of a cement, at least one of a clay and a sulphate, an aqueous emulsion polymer, and preferably an organic acid and a wax, which is degradable in a moisture active environment such as a landfill and which can be applied to degradable substrates to render the substrates water resistant is disclosed herein. Also disclosed is a method for applying the coating to a degradable substrate to prepare a stock product.
摘要:
A process for forming a moulded paper product which is degradable in a moisture active landfill is disclosed. The process involves providing a paper pulped paper feedstock, moulding the feedstock to produce a shaped product, drying the shaped product, applying a coating composition on to at least one surface of the shaped product, curing the coating composition and, optionally, hot pressing the resulting product to form a moulded paper product. When the moulded paper product is coated utilizing a particularly preferred coating composition described herein, which is comprised of a cement, at least one of a clay and a sulphate, an aqueous emulsion polymer, and preferably, at least one of an organic acid and a wax, it is readily degradable in a moisture active landfill.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines für die Papier- und Kartonindustrie geeigneten, die Bedruckbarkeit von Papier und Karton verbessernden Mittels auf Pigmentbasis, bei dem ausgehend von mindestens einem Pigment und mindestens einem wasserlöslichen oder wasserquellbaren, anionische Gruppen enthaltenden Hydrogel ein wäßriges kolloidales System bereitet, dieses mittels eines quaternären organischen Ammoniumsalzes einer Koazervation unterwirft und gegebenenfalls das bei der Koazervation erhaltene Produkt durch Sedimentation, Zentrifugieren und/oder Filterpressen aufkonzentriert, das hergestellte Mittel sowie die Verwendung desselben in der Papier- und Kartonindustrie.