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Low Molecular Weight PPE Resin as Flow Promoter to Thermoplastic Resins

IP.com Disclosure Number: IPCOM000010231D
Publication Date: 2002-Nov-07
Document File: 8 page(s) / 105K

Publishing Venue

The IP.com Prior Art Database

Related People

Hua Guo: AUTHOR

Abstract

PPOÒ SA120 resin is a new low molecular weight (Mn »2500) polyphenylene-ether (PPE) resin recently commercialized by GE Plastics as a polymer additive. In addition to having the well-known properties inherent to PPE, this new resin has an excellent thermal performance (glass transition temperature (Tg) of 165°C) combined with a characteristic feature of improved processability.

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Slide 1 of 8

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GE Plastics

Jan. 15, 2002

Development of PPO® SA120 as Flow Promoter to Thermoplastic Resins

Objective

Experimental: SA120/high IV PPE blend

DOE results (Design of Experiments)

Conclusions

Global Noryl® Resin, GE Plastics

PPO® and Noryl ® are a registered trademarks of General Electric Company


Slide 2 of 8

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GE Plastics

Objective

Concept

Keep heat performance

No remarkable drop at Tg

Improve flow (MFI)

Lower processing temp.

Flow promoter

SA120

Add to

Tg=160C,

high heat performance

IV=0.12,

Low IV, high flow

Thermoplastic resins

Such as PPE, PEI, PEEK

Widely used at Auto, Electric, Machine…

Application Example

Present product

Customer requirement:

No more design space at present material !!

Noryl® resin

High flow

resin composition:

PPE* 76

polystyrene 16

rubber 8

Properties:

MFI 12.4 g/10min

Izod 25 kgcm/cm (4.59 ft-lb/in)

HDT 159.8 °C

* Refers to High IV PPE

Investigate flow promotion effect of PPO® SA120


Slide 3 of 8

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GE Plastics

Experimental

PPE/SA120 blend (Four Components Mixture DOE)

Extrusion

Extruder: twin screw

Ext. Temp. (C): 250 (ext. pattern: 01-09)

Screw speed (rpm): 200

Output (kg/hr): 40

Formulations

(based on Noryl® resin)

PPE (high IV) 70-95

SA120 (low IV) 0-20

Polystyrene 0-25

Rubber 5-30

Stabilizers 0.4

Carbon black 0.5

Molding

Drying temp. 120C, 2hr

Injection Molding pattern: M3-01

Testing

using standard ASTM conditions.

Izod (kgcm/cm): 1/8 in.

Tensile Strength (kg/cm2): ASTM-1, 10mm

Tensile Elongation (%): ASTM-1

Flexural Strength (kg/cm2): ¼ in., 2.5mm

Flexural Modulus (kg/cm2): ¼ in.

HDT (C): ¼ in., load...