Abstract:
Surfactants capable of releasing and/or dissolving polymers to form water-soluble or water-dispersible polymer solutions are disclosed. In addition, polymer compositions containing a water-in-oil emulsion comprising the surfactant are provided and can be used, for example, in methods of dissolving a polymer. These surfactants and polymer compositions can be used in various industries including for water clarification, papermaking, sewage and industrial water treatment, drilling mud stabilizers, and enhanced oil recovery.
Abstract:
Size dispersion in paper stock is improved by treatment of cellulose water slurry with cationizing compounds and mixing a sizing product, either neat or in solution, with the water and injecting the mixture in droplet form into said cellulose water slurry before, during or after the paper web formation whether said paper web is dry or not and drying the paper web, an apparatus for carrying out the improved process is included.
Abstract:
A method of applying a metallic coating (24) to a surface of a sheet material (20) comprises forming a coating dispersion, the coating dispersion comprising coating particles (10) dispersed in a solvent. The coating particles (10) each comprise a polymeric material (14) and a metallic material (12). A sheet material (20) having a first surface is provided and the coating dispersion is applied to the first surface of the sheet material (20). The coating dispersion is dried to form a coating (24) on the first surface of the sheet material (20), the coating (24) comprising the metallic material (12) dispersed in a layer (22) of the polymeric material (14). The coating dispersion is heated to a temperature of at least 50 degrees Celsius to melt the polymeric material.
Abstract:
The invention provides a method for the application of a treatment agent to a substrate, the method comprising the treatment of the pre-wetted substrate in an aqueous system comprising the solid particulate treatment agent in a closed container, the treatment being carried out at a ratio of liquor to substrate which does not exceed 2:1. Typically, the method is applied to the dyeing of textile fibres at liquor ratios of ≤1:1and is carried out in the absence of additives conventionally included for the sole purpose of promoting dye uptake by controlling electrical interactions or otherwise enhancing interactions between the substrate and the treatment agent. The invention also provides a method for the removal of surplus treatment agents following application of said treatment agents to a substrate, said method comprising not more than three wash-off treatments of said substrate with water following said application. Said wash off process most particularly comprises a two-stage process comprising performing, in order, the steps of: a first wash-off of the treated substrate with water in a closed container at a ratio of water to substrate which does not exceed 5:1;and a second wash-off of the treated substrate with water in a closed container at a ratio of water to substrate which does not exceed 10:1.
Abstract:
본 발명은 코팅지의 괘선 터짐(fold crack) 현상을 개선하기 위하여 종이 코팅층의 스티렌-부타디엔 라텍스 분포를 조절한 코팅 구조를 갖는 코팅지 및 제조방법에 관한 것으로, 보다 상세하게는 유리전이온도와 입자크기가 상이한 스티렌-부타디엔 공중합체 라텍스를 종이 코팅층의 특정 영역에 각각 분포시킴으로써 코팅지의 괘선 터짐이 현저하게 감소한 코팅지 및 제조방법에 관한 것이다. 본 발명에서 제시하는 종이 코팅 구조는 입자크기가 70 내지 120 nm, 유리전이온도가 10 내지 30 ℃인 라텍스를 원지쪽 코팅층에 분포시키고, 입자크기가 120 내지 200 nm, 유리전이온도가 -30 내지 0 ℃인 라텍스를 바깥쪽 코팅층에 분포시킴으로써 얻어지는 것을 특징으로 한다. 상기와 같이 다른 종류의 라텍스를 2개의 코팅층에 나누어 적용시 기존의 일반적인 코팅지에 비하여 종이 강직도(stiffness)와 괘선 터짐 현상이 크게 개선되는 효과를 얻을 수 있다.
Abstract:
A coating composition may include kaolin having a shape factor less than about 70 and calcium carbonate, wherein less than about 90% by weight and greater than about 60% by weight of particles of the calcium carbonate have an equivalent spherical diameter (esd) less than 2 microns. The coating composition may include a thickener present in an amount ranging from about 0.1 % to about 0.9% by active dry weight of the composition. A coating composition may include kaolin having a shape factor less than about 70 and calcium carbonate having a mean particle size (d50) of at least about 2.4 microns and a steepness factor of at least about 30. The coating composition may be a paper basecoat composition or a paperboard basecoat composition. A paper or paperboard product may include the coating composition on at least one surface of the paper product or paperboard product.
Abstract:
Gezeigt wird ein Zigarettenpapier, das Zellstofffasern und Füllstoffpartikel enthält, wobei mindestens 50 Gew.-%, vorzugsweise mindestens 70 Gew.-% und insbesondere mindestens 90 Gew.- % des Füllstoffs eine nach ISO 13320 gemessene Partikelgrößenverteilung hat, für deren Verteilungsparameter p = d 10 +2-d 30 +2-d 70 -d 90 gilt: p ≤ 5,0 μm, vorzugsweise p ≤ 4,0 μm und besonders vorzugsweise p ≤ 3,5 μm, und p ≥ - 1,0 μm, vorzugsweise p ≥ 0,0 μm und besonders vorzugsweise p ≥ 1,0 μm.
Abstract:
A method for the preparation of a coated substrate is provided, comprising the steps of providing a substrate; applying on at least one side of said substrate a first coating layer of a first aqueous composition comprising porous anionic pigment particles having a BET surface area of above 40 m2/g and a binder and applying on said first coating layer, a second coating layer of a second, aqueous composition comprising cationic colloidal silica or silicate based particles and polyalkylene glycol. It has been found that a substrate coated with the combination of the first coating layer and the second coating layer provides a suitable substrate for high-quality and fast-drying inkjet printouts.