Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Coated calcium carbonate for pitch and/or stickies control

A technology of calcium carbonate and adhesive, applied in pulp fat/resin/pitch/wax removal, coating, paper coating, etc., can solve problems such as paper web breakage, paper staining, machine stop, etc.

Active Publication Date: 2019-12-13
IMERTECH SAS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can cause the web to break causing the machine to stop
Resins and adhesives can also stain the paper, reducing the quality of the final product

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
  • Coated calcium carbonate for pitch and/or stickies control
  • Coated calcium carbonate for pitch and/or stickies control
  • Coated calcium carbonate for pitch and/or stickies control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] Gustafsson test

[0084] The Gustafsson test described above was used to test the resinous oil control capabilities of the minerals described in Table 1.

[0085] The artificial resin oil used was dissolved in acetone (500cm 3 ) in rosin resin mixture A (rosin resin with a ring and ball softening point of 80°C and an acid value of 150mgKOH / g), rosin resin mixture B (a rosin with a ring and ball softening point of 65°C and an acid value of 150mgKOH / g resin) or rosin resin mixture C (rosin resin with a viscosity of 1000mPa.s and an acid value of 150mgKOH / g at 70°C) (by Lawter TM Provide) (30g), obtain artificial resin oil solution (0.06g cm -3 ). Protect from sunlight during storage.

[0086] The pulp was Botnia pulp (440 g) soaked overnight in filtered water (10 L). This was added to a Weverk type beater along with filtered water (12L). Run the beater for 15 minutes, then add a weight (5.568kg) to engage the bed, and run the beater for 55 minutes to get a Canadian...

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

No PUM Login to View More

Abstract

Use of a particulate mineral having a coating of one or more rosin acid(s) and / or one or more derivative(s) thereof as a pitch and / or stickies control agent in a composition comprising cellulosic pulp, a method of reducing dissolved and / or colloidal pitch and / or stickies in cellulosic pulp using said coated particulate mineral, said coated particulate mineral, a method of making said coated particulate mineral, a composition comprising cellulosic pulp and said coated particulate mineral and paper comprising said coated particulate mineral.

Description

technical field [0001] The present invention relates generally to the use of coated particulate minerals as a resinous and / or papermaking sizing agent in compositions comprising cellulose pulp. Coated granular minerals are coated with one or more abietic acids and / or one or more abietic acid derivatives. The invention also relates to said coated particulate minerals and methods for their manufacture. Background technique [0002] Papermaking generally involves breaking down a fiber source (such as wood, fiber crops, or waste paper) into its constituent fibers by chemical and / or mechanical and / or thermal treatments to produce cellulose pulp. During this pulping stage (and other steps in the papermaking process) a resinous compound called "pitch" present in the fiber source is released. The lipophilicity of these resinous compounds causes them to form colloidal droplets when suspended in water. As an alternative or in addition, synthetic (artificial) substances known as pap...

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
IPC IPC(8): C09C1/02D21C9/08D21H19/00D21H21/02
CPCC09C1/3669C09C1/405C09C1/407C09C1/42C09C3/08C09C1/009C09C1/02C09C1/021C09C1/024C09C1/027C09C1/04C09C1/043C09C1/24C09C1/3063C09C1/346D21H21/02D21C9/08D21H17/62D21H17/675D21H17/68C01P2004/61C01P2004/62C01P2006/12C01P2006/22C09C3/10D21H17/74
Inventor A·芬德利J·斯卡洛普S·哈迪斯蒂D·威克斯J·普雷斯顿
Owner IMERTECH SAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com