Supercharge Your Innovation With Domain-Expert AI Agents!

Heterophase polyurethane composition with reduced foam formation

A composite, two-component polyurethane technology, applied in household appliances, other household appliances, coatings, etc., can solve the problems of damage to material properties, increased heat release, etc.

Active Publication Date: 2020-04-28
HENKEL KGAA
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, they are often very reactive, which can lead to increased exotherm and compromise material performance

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
  • Heterophase polyurethane composition with reduced foam formation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0087] raw material

[0088] 1. Polyol: polyether triol, hydroxyl value=550mg KOH / g, viscosity at 25°C=1800mPas (Brookfield25°C, rotor 4, 20rpm), OH equivalent weight=102g, number average molecular weight=300g / mol

[0089] 2. Polyisocyanate: isomeric mixture of MDI and higher functional homologues, NCO content 32% by weight, viscosity at 25° C. = 43 (Brookfield 25° C., spindle 3, 50 rpm)

[0090] 3. Catalyst: solution of dicyclic tertiary amine (DABCO) in polyol (based on solution, 30% by weight of DABCO)

[0091] 4. Emulsifier / release agent:

[0092] - emulsifier 1: difunctional carboxylic acid (C 6 ) and unsaturated fatty acid (average C chain length 18) esterified tetrafunctional polyol

[0093] - Emulsifier 2: Dipentaerythritol fully esterified with oleic acid

[0094] - Emulsifier 3: dimer fatty acid and branched alcohol (average alcohol chain length C 8 ) diester

[0095] - dimer fatty acid

[0096] —polyoxyethylene tridecyl ether phosphate

[0097] Component A: ...

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
hydroxyl valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention relates to a two-component polyurethane composition comprising at least one polyol, at least one polyisocyanate and at least one emulsifier which is not homogeneously miscible with the at least one polyol. The invention also relates to the use of the polyurethane composition as a binder for the production of fiber composites, to a process for the production of the fiber composite, to the fiber composite itself, and to the use of the fiber composite .

Description

technical field [0001] The present invention relates to a two-component polyurethane composition comprising at least one polyol, at least one polyisocyanate and at least one emulsifier, wherein said composition exhibits phase separation after curing. The invention also relates to the use of the polyurethane composition as a binder for the production of fiber composites, processes for the production of these fiber composites, the fiber composites themselves, and their use. Background technique [0002] Fiber reinforced composites are designed to withstand high mechanical stress. For this purpose, the matrix resin must be able to stably join the fiber material after curing. Defects have an adverse effect on the mechanical properties of molded parts. Therefore, air holes, cavities or air pockets in molded parts should be avoided. Furthermore, the cured matrix resin should be characterized by high fracture toughness. Suitable matrix materials based on epoxy adhesives are kno...

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 Patents(China)
IPC IPC(8): C08G18/48C08G18/76C08G18/20C08G18/42C08J5/04C08K5/10C08K5/103C08K5/49B29C70/48
CPCB29C70/48C08G18/2081C08G18/4233C08G18/4288C08G18/4829C08G18/7664C08J5/04C08K5/10C08K5/103C08K5/49C08G2150/50C08G2120/00B29L2031/3055B29K2875/00C08J2375/08C08G18/0871C08G18/7671
Inventor A·费伦茨O·拉默朔普A·尼格迈尔
Owner HENKEL KGAA
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com