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

Polyester resin composition

A technology of resin composition and polyester, applied in the field of polyester resin composition, can solve the problems of loss of commodity value, inability to shape, inability to impart toughness, etc., achieve high toughness and light discoloration resistance, maintain surface smoothness, The effect of suppressing the production of exudate

Active Publication Date: 2008-08-13
POLYPLASTICS CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the resin composition added with such a flame retardant is processed into a molded product with a very thin wall thickness (for example, a lamp support body with a wall thickness of about 0.9mm), the viscosity slightly increases, causing short circuits and other defects. , when the obtained molded product is placed at a high temperature of about 150°C for a long time, exudates will occur on the surface, the surface smoothness and surface gloss will decrease, and the commodity value will be lost
In addition, in these methods, under the severe conditions of the type of hot runner system (a system that takes a long time to heat and melt and is temporarily exposed to a high temperature of 290-300°C) used in the molding of lighting components such as supports, it will not be possible to shaped accordingly
For example, simply selecting a flame retardant that has an effect of suppressing gelation when the resin melts and has high melt stability cannot impart the necessary toughness to supports, etc.
Therefore, it cannot be used as a support for next-generation light sources accordingly.

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
  • Polyester resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5 and comparative example 1-2

[0167] The above-mentioned various components were mixed according to the ratio shown in Table 1, and a twin-screw extruder was used for melt kneading to prepare a pellet-shaped resin composition. Thereafter, test pieces were produced by injection molding using the pellets, and the characteristics related to the above-mentioned items were evaluated. Table 1 shows the results.

[0168] Table 1

[0169]

[0170] As can be seen from Table 1, the resin compositions of Examples 1-5 maintain the required flame retardancy, antistatic properties, high fluidity (forming properties), mechanical properties (toughness) and light discoloration resistance, and no bleeding when annealed at 150°C. Especially for the resin composition of Examples 1-5, the elongation is 10% or more, and the toughness is also excellent. On the other hand, the resin compositions of Comparative Examples 1 and 2 showed significant bleeding when annealed at 150° C., and were not suitable for next-generation lig...

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
softening pointaaaaaaaaaa
surface roughnessaaaaaaaaaa
surface roughnessaaaaaaaaaa
Login to View More

Abstract

The polyester-based resin composition is constituted of (A) 100 pts.wt. polyester-based resin, (B) 5-60 pts.wt. halogenated bisphenol-type epoxy resin having a sealed terminal epoxy group and >8,000 number average molecular weight, (C) 1-20 pts.wt. antimony-based flame retardant, and (D) 0.1-10 pts.wt. antistatic agent. The resin composition may contain (E) a lubricant, (F) a phosphoric acid salt and / or (G) an antioxidant. The resin composition preferably has >=10% tensile elongation based on ISO 527. The resin composition is useful for molding a lightening part (especially holders for a light source, such as a cap for a circular tube of a fluorescent lamp).

Description

technical field [0001] The present invention relates to a polyester-based resin composition suitable for exterior applications such as lighting components, particularly supports for next-generation light sources such as round tube sockets for fluorescent lamps. Background technique [0002] Conventionally, polyester resins excellent in heat resistance, mechanical properties, chemical resistance, and formability have been widely used for exterior applications such as lighting components, but recently, the reduction of lamps and appliances is being pursued. , High-brightness development of light sources. Therefore, from the viewpoint of ensuring the safety of products, lighting components are required to have flame retardancy. Furthermore, the required surface smoothness maintenance temperature is shifting from 100°C to 150°C when using lighting components. Furthermore, with the simplification of lamps and appliances, the wall thickness of the molded product becomes 1 mm or ...

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): C08L67/00C08K5/5317F21V21/00
Inventor 沼田贵善
Owner POLYPLASTICS CO LTD
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