Unlock instant, AI-driven research and patent intelligence for your innovation.

Self-binding pigment hybrid

A self-adhesive, pigment technology, applied in the field of manufacturing self-adhesive mineral pigment particles and preparing self-adhesive pigment particles, to reduce the formation of aggregates, avoid concentration steps, and achieve good adsorption effects

Inactive Publication Date: 2014-05-28
OMYA INT AG
View PDF12 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, the preparation of low solids suspensions has the disadvantage that the obtained ground product has to be concentrated before being sent to other facilities for further processing
Furthermore, prior art methods often produce suspensions with a high total organic content of the aqueous phase of the ground suspension

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-binding pigment hybrid
  • Self-binding pigment hybrid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0099] Methods and materials

[0100] The materials in the examples and the measurement methods carried out are described below.

[0101] Brookfield viscosity

[0102] The Brookfield viscosity of the self-binding pigment particle suspension was measured by using a Brookfield viscometer of model RVT equipped with an appropriate spindle, one hour after manufacture and after stirring for one minute at room temperature at 100 rpm.

[0103] particle size

[0104] The particle distribution of the self-bonding pigment particles was measured using a Sedigraph 5120 from Micromeritics, USA. Methods and apparatus are known to those skilled in the art and are commonly used to determine the particle size of fillers and pigments. Measured at containing 0.1 wt% Na 4 P 2 o 7 in aqueous solution. Disperse the sample using a high-speed stirrer and ultrasound.

[0105] Solid content of aqueous suspension

[0106] The suspension solids content (also called "dry weight") was determined...

Embodiment 2

[0129] Embodiment 2-the embodiment of the present invention

[0130] with a d of 42μm-48μm 50 The value corresponds to the fineness of natural CaCO from Norway 3 Carboxymethylcellulose (commercially available from Sigma Aldrich, No. 419273) was used as the polymer binder.

[0131] The carboxymethylcellulose (CMC) had an intrinsic viscosity of 327 ml / g and a degree of substitution of 0.7.

[0132] The native CaCO was used in the form of a filter cake with a solids content of 70.0% by weight 3 . A slurry with a solids content of 50.0% by weight was prepared from this filter cake by adding 2.0% by weight of a 4.7% solution of the above carboxymethylcellulose.

[0133] Using zirconium silicate beads with a diameter of 0.6 mm to 1.0 mm, in circulation mode, with an attritor mill (Dynomill , Bachofen, Switzerland) wet milling of the slurry in tap water (15°dH) until a d of 0.6 μm 50 value.

[0134] The particle size distribution of the mineral pigment material as measured by...

Embodiment 3

[0136] Embodiment 3-the embodiment of the present invention

[0137] with a d of 42μm-48μm 50 The value corresponds to the fineness of natural CaCO from Norway 3 Carboxymethylcellulose (commercially available from Sigma Aldrich, No. 419281 ) was used as the polymer binder.

[0138] The carboxymethylcellulose (CMC) had an intrinsic viscosity of 460 ml / g and a degree of substitution of 1.2.

[0139] The native CaCO was used in the form of a filter cake with a solids content of 70.0% by weight 3 . A slurry having a solids content of 45.0% by weight was prepared from this filter cake by adding 2.0% by weight of a 2.5% solution of the above carboxymethylcellulose.

[0140] Using zirconium silicate beads with a diameter of 0.6 mm to 1.0 mm, in circulation mode, with an attritor mill (Dynomill , Bachofen, Switzerland) wet milling of the slurry in tap water (15°dH) until a d of 0.6 μm 50 value.

[0141] The particle size distribution of the mineral pigment material as measured...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
degree of carboxylationaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The present invention relates to a process for preparing self-binding pigment particles comprising the following steps: a) providing an aqueous mineral pigment material suspension; b) providing at least one polymeric binder, wherein the binder comprises at least one modified polysaccharide having a degree of carboxylation in the range of 0.4 to 2.0 and having an intrinsic viscosity in the range of > 300 to 500 ml / g, c) mixing the binder of step b) with the aqueous mineral pigment material suspension of step a) and adjusting the solids content of the obtained suspension so that it is > 45 to 95 wt.-%, preferably from 45 to 80 wt.-%, based on the total weight of the suspension, and d) grinding the aqueous mineral material suspension of step c).

Description

Background technique [0001] Binders and mineral materials are the main components of paints and paper coatings. The former, usually based on latex and in the form of an aqueous suspension or dispersion, provide the necessary adhesion to the carrier and cohesion between the components forming the article to be produced, such as paint or paper and such as agricultural fertilizers. The latter, generally calcium carbonate, can provide improvements, for example, in paper and paint quality and agricultural properties, especially with regard to their optical properties. The concept of self-binding pigment particles is known in the industry: it refers to unique solid particles formed by the intimate bonding of mineral materials and binders to each other. The cohesion gives the self-bonding pigment particles excellent mechanical stability. Such particles can be used directly in various applications. [0002] The use of self-binding pigment particles avoids the logistical difficultie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02D21H17/00
CPCC09C1/021D21H17/69D21H17/00D21H19/42C01P2006/22C01P2004/62D21H17/74C01P2006/60A01N59/06C01P2004/50C09C3/10D21H17/25
Inventor D·甘滕贝恩J·舍尔科普夫P·A·C·甘恩
Owner OMYA INT AG