Polyurethane resin based slush molding material

一种树脂、中空的技术，应用在行人/乘员安全布置、车辆安全安排、运输和包装等方向

Inactive Publication Date: 2005-07-27
SANYO CHEM IND LTD +1
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the above solution doesn't seem to solve the problem completely

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
  • Polyurethane resin based slush molding material
  • Polyurethane resin based slush molding material
  • Polyurethane resin based slush molding material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0184] The manufacturing method of the instrument panel cover of the present invention may suitably include a step of thermally molding the aforementioned material, and a step of forming a tearing line for tearing on the molded material obtained in the previous step, wherein the tearing line will not be exposed. On the design side.

[0185] The above-mentioned heat molding step is not particularly limited, and a known method can be used. For example, it could also be the hollow molding method used in the conventional manufacture of instrument panel housings.

[0186] The above-mentioned step of forming the tear line is also not particularly limited, and a known method may be used. For example, laser processing, blade press processing, etc. are used to form tear lines on the back of the instrument panel.

[0187] This tear line will tear the shell material along the tear line when the airbag is inflated.

Embodiment

[0189] In the following, Preparation Examples and Examples are provided to explain the present invention in more detail, but the present invention is not limited to these Examples.

[0190] Among the raw materials in the following examples, polyol I is PBA with Mn of 1000, polyol II is PHIP with Mn of 900, and polyol III is polyethylene adipate with Mn of 2000. Stabilizer I is Irganox 1010, purchased from Ciba Fine Chemical Co., Ltd.; titanium dioxide is TipaqueR-820, purchased from Ishihara Industry (strain); Dispersant I is Sansparl PS-8, purchased from Sanyo Chemical Industry (strain); Amine I is MEK ketimine of HAD, ketimine II is MEK ketimine of hydrogenated MDA; ketimine III is MEK ketimine of isophorone diamine; disperser I is Ultradisperser , purchased from Yamato Scientific Co., Ltd.; Plasticizer I is CR741, purchased from Dahachi Chemical Co., Ltd. [Phosphate ester represented by general formula (5), wherein R is phenyl, q is 1, and R' is -ph-isopropylidene-ph-]; pl...

preparation example 1-8

[0192] Up solutions (Up1-Up8) were prepared according to the scheme in Table 1 below (parts by weight, expressed in parts in the table).

[0193] In a reaction vessel equipped with a thermometer, a stirrer and a nitrogen blowing pipe, polyols, low molecular weight diols and 1-octanol were charged, the air therein was exchanged with nitrogen, the resulting mixture was heated to 110° C., and stirred until melted. To this was then added the diisocyanate and the mixture was heated at 85°C for 6 hours to form an Up with NCO terminations. Then, Up was cooled to 60°C, and then THF, stabilizer and titanium dioxide (in Up7, DBA was added after cooling to 60°C) were uniformly mixed to form an Up solution. The NCO contents (% by weight, expressed in % in the table) of these Up solutions are shown in Table 1.

[0194] Preparation example

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
particle diameteraaaaaaaaaa
glass transition temperatureaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The present invention provides a material for slush molding which is improved in melt properties during slush molding and is excellent in heat resistance, the material being made up of a thermoplastic polyurethane resin (A) the difference between the softening starting temperature (STi) and the softening ending temperature by TMA being from 0 to 30° C., and STi being 135 to 200° C. The resin (A) has a hard segment with an Mn of 200 to 2000 comprising a diisocyanate having a symmetrical structure, a low molecular-weight diamine having a symmetrical structure, and / or a low molecular-weight diol, the content of which being from 5 to 50 wt %, and a soft segment making up of a high molecular-weight diol with an Mn of 500 to 5000, with the aromatic content being 35 wt % or less and the aromatic ring content x and the urea group content y satisfying <?in-line-formulae description="In-line Formulae" end="lead"?>-0.1x+2.5<=y<=-0.1x+6.<?in-line-formulae description="In-line Formulae" end="tail"?>

Description

technical field [0001] The present invention relates to a material for hollow molding, especially a material for hollow molding for automobile interiors. Background technique [0002] In the past, in order to improve the adhesion performance, washing resistance and dry cleaning resistance of the interlining, a hot-melt adhesive containing thermoplastic polyurethane resin was proposed. The difference and the softening start temperature are kept within a specific range, and the hot melt adhesive is also used as a material for hollow molding. (For example, see Japanese Patent No. 2984921.) [0003] However, for materials used in hollow molding, especially those suitable for the interior of automobiles, it is desired to satisfy conditions such as being able to obtain a molding material having excellent heat resistance and appearance, and having abrasion resistance. Focusing on polyurethane-based materials, no hollow molding material capable of satisfying these characteristics ...

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): B29C41/00B29C41/18C08G18/12C08G18/28C08G18/32C08G18/65C08G18/66C08L75/04
CPCB29C41/18C08G18/2825C08G18/4277C08G18/6637C08L75/04C08G18/65C08G18/3206C08G2140/00C08G18/664C08G18/4202C08G18/0895C08G18/722C08G18/12B29C41/003C08G18/3256C08L83/00B60K37/00C08J3/20
Inventor 藤林慎也大森英树西冈尚吾竹内誉人野村真人
Owner SANYO CHEM IND LTD
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap