Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Composition for polyurethane foam

A technology of polyurethane foam and composition, which is applied in the direction of electrical recording technology using charge graphics, equipment and instruments using electrical recording technology using charge graphics, which can solve problems such as poor images and toner leakage, and achieve excellent recovery , Excellent toner sealing effect

Inactive Publication Date: 2018-08-31
BRIDGESTONE CORP
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the process cartridge method is used in many image forming apparatuses, leakage of toner results in defective images

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
  • Composition for polyurethane foam
  • Composition for polyurethane foam
  • Composition for polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 20 and comparative example 1

[0133] The polyurethane foam raw materials shown in Table 1 were mixed and foamed at atmospheric pressure at 20° C. by a one-step method and a flat plate foaming method to produce 21 kinds of polyurethane foams. The obtained polyurethane foam was subjected to the above-mentioned evaluation. The results are shown in Table 1. The numerical values ​​in the rows of the formulations of the compositions in Table 1 are parts by mass except for the mass ratio.

[0134] Table 1

[0135]

[0136] Table 1 (continued)

[0137]

[0138] As is clear from Table 1, compared with the toner seal material produced from the polyurethane foam of Comparative Example 1, the toner seal materials produced from the polyurethane foams of Examples 1 to 20 were able to secure excellent properties of the polyurethane foam. Simultaneously with the toner sealability, the tensile strength of the polyurethane foam was shown to increase, and its compressive residual strain and hysteresis loss coefficie...

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
tensile strengthaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The present invention provides a composition for polyurethane foam, which is obtained by blending a polyol composed of a polyester polyol and a polyether polyol, tolylene diisocyanate, a foaming agentand a foam stabilizer, and which is characterized in that: the polyester polyol contains a phthalate ester polyol; and the mass composition ratio of the tolylene diisocyanate, namely (2, 4-tolylene diisocyanate) / (2, 6-tolylene diisocyanate) is from 65 / 35 to 70 / 30. This composition for polyurethane foam enables a polyurethane foam to have enhanced tensile strength and elastic recoverability, whileensuring low air permeability and excellent toner sealability.

Description

technical field [0001] The present invention relates to a composition for polyurethane foam, and particularly to a toner sealant obtained by foaming the composition for polyurethane foam to form a polyurethane foam. Background technique [0002] Urethane foam has soft mechanical properties and excellent processability, and thus is used as various sealing materials such as toner sealing materials and water-stop sealing materials. [0003] With recent advances in electrophotography, members including urethane foam have been used in image forming devices such as dry electrophotographic devices and the like as members for various purposes such as charging, developing, transferring, toner supply, and cleaning. received attention. Such members including polyurethane foam have been used as members for image forming apparatuses having elasticity, such as charging rollers, developing rollers, transfer rollers, toner supply rollers, and cleaning rollers. [0004] In image forming ap...

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): C08G18/76C08G18/00C08G18/42C08G18/48G03G15/00G03G15/08C08G101/00
CPCC08G18/76C08G18/00C08G18/42G03G15/00G03G15/08C08G18/6677C08G18/7621C08G18/4018C08G18/4213C08G2110/0083C08G2110/005C08G18/48C08G2190/00C08G2110/0008
Inventor 平田彩神崎慎也
Owner BRIDGESTONE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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