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

Two-component binder system for the polyurethane cold-box process

A binder, two-component technology, used in cores, mold components, manufacturing tools, etc., to solve pinhole defects, comma defects, casting defects, etc.

Active Publication Date: 2017-08-18
HUTTENES ALBERTUS CHEM WERKE
View PDF17 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of nitrogen-containing compounds can also cause casting defects (nitrogen defects), such as pinhole defects or comma defects (Komma-Fehler)

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
  • Two-component binder system for the polyurethane cold-box process
  • Two-component binder system for the polyurethane cold-box process
  • Two-component binder system for the polyurethane cold-box process

Examples

Experimental program
Comparison scheme
Effect test

example 82 and 91

[0259] Furthermore, further advantages of the invention are the low tendency to stick and the high flowability of the molding material mixture with the two-component binder system according to the invention. The molding material mixture acts very dry. Very good sharpness of contour and high shaping accuracy were exhibited during the production of test specimens from the molding compound mixture according to the invention. The samples obtained are characterized by high edge strength.

[0260] BTX emissions of casting cores and molds produced according to the polyurethane cold box process during casting (at 700° C. Measured emissions of benzene, toluene and mixed xylenes) are reduced by 50% or more.

[0261] Table 4

[0262]

[0263]

[0264]

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

A description is given of a two-component binder system, in particular for use in the polyurethane cold-box process, a mixture for curing by contact with a tertiary amine, a method for producing a feeder, a foundry mould or a foundry core and feeders, foundry moulds and foundry cores that can be produced by this method, and the use of a two-component binder system according to the invention or a mixture according to the invention for binding a basic moulding compound or a mixture of basic moulding compounds, in particular in the polyurethane cold-box process.

Description

technical field [0001] The application relates to a two-component adhesive system, especially used in the polyurethane cold box process, a kind of adhesive system used in combination with a tertiary amine (wherein the term "tertiary amine" also includes in the scope of the application two or more mixtures of more tertiary amines) contact hardening mixtures, a method for producing risers, molds or cores and risers, molds and cores which can be produced according to the method, and the double Use of component binder systems or mixtures according to the invention for bonding molding stock or mixtures of molding stock, especially in the polyurethane cold box process. Background technique [0002] In the manufacture of risers, molds and casting cores, two-component adhesive systems which cold-harden while forming polyurethanes are generally used for bonding the molding stock. The binder system consists of two components, namely a (normally soluble in solvent) polyol (polyol comp...

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): B22C1/22
CPCB22C1/2253B22C1/2273B22C1/20B22C9/10B22C9/06C08G18/542C08G18/7657
Inventor 弗兰克·伦曾
Owner HUTTENES ALBERTUS CHEM WERKE
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