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Aqueous binder composition

A technology of water-based adhesives and compositions, applied in the directions of lignin adhesives, adhesive types, adhesives, etc., can solve problems such as expensive and expensive adhesives

Active Publication Date: 2021-06-22
ROCKWOOL AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, many of these adhesives are still relatively expensive because they are based on relatively expensive base materials

Method used

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  • Aqueous binder composition
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0234] In the following examples, several adhesives falling within the limits of the invention were prepared and compared with adhesives according to the prior art.

[0235] For the adhesive according to the invention and the adhesive according to the prior art, the following properties were respectively determined:

[0236] Solids Content of Adhesive Components

[0237] Prior to curing, the amounts of individual components in a given binder solution are based on the anhydrous mass of the components.

[0238] Reaction Loss – Definition

[0239] Reaction loss is defined as the difference between the solids content of the binder components and the binder solids

[0240] Therefore, the reaction loss is calculated by:

[0241] Reaction Loss = (Binder Component Solids - Binder Solids) / (Binder Component Solids)

[0242] Kraft Lignin by UPM to LignoBoost TMSupplied, UPM BioPiva 100 as a powder, oxidized kraft lignin based on UPM BioPiva 100 (AOL) was supplied by Aarhus Universit...

Embodiment B

[0333] Example B - Scale-up of lignin oxidation in ammonia with hydrogen peroxide to pilot scale

[0334] Oxidation of lignin with hydrogen peroxide is an exothermic process, and even at the laboratory scale, the addition of peroxide increases the temperature significantly. This is a natural problem when scaling up chemical processes, since the heat generated scales with the third power of size (volume), whereas cooling typically only increases with the square of the size (area). Additionally, due to the high viscosity of the adhesive intermediate, process equipment must be carefully selected or designed. Therefore, the amplification is carefully designed and performed in several steps.

[0335] The first scale-up step is from 1 liter (laboratory scale) to 9 liters using a professional stainless steel mixer with very efficient mechanical agitation. Scale-up resulted in only slightly higher final temperatures than those obtained at laboratory scale, which was attributed to ef...

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Abstract

The invention is directed to an aqueous binder composition for mineral fibers.

Description

[0001] field of invention [0002] The present invention relates to an aqueous binder composition for mineral fibres, a method of using said binder to produce bonded mineral fiber products, and a mineral fiber product comprising mineral fibers in contact with a cured binder. [0003] Background of the invention [0004] Mineral fiber products typically contain man-made glass fibers (MMVF), such as glass fibers, ceramic fibers, basalt fibers, slag wool, mineral wool and rock wool, which are bound together by a cured thermosetting polymer binder material. For use as thermal or acoustic insulation products, bonded mineral fiber mats are generally produced by converting melts of suitable raw materials into fibers in a conventional manner, for example by the rotary cup process or by the cascading rotor process. Fibers are blown into a forming chamber and then, while still hot in air, are sprayed with a binder solution and deposited randomly in mat or web form onto a traveling convey...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/26C09J197/00D04H1/587D04H1/64C03C25/25
CPCC03C25/465C03C25/26C03C25/32C03C25/25D04H1/587D04H1/64D04H1/4209D04H1/4218C09J197/005C08H6/00C03C25/328C03C25/36C07G1/00
Inventor D·B·约翰松I·乔汉森B·S·科尔斯加德M·尼科里克
Owner ROCKWOOL AS