Processing additive, molding composition, masterbatch of processing additive and molding article

A technology of processing aids and compositions, which is applied in the field of molding compositions and processing aids, can solve the problems of low dispersion of fluoropolymers, die accumulation, etc. The effect of shortening the melt fracture elimination time
CN102482374BActive Publication Date: 2014-08-27DAIKIN IND LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
DAIKIN IND LTD
Publication Date
2014-08-27

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Abstract

The present invention provides a processing aid capable of improving moldability and reducing the added amount of the processing aid at a highly dispersible Mooney viscosity dispersed in a melt-processable resin. The present invention relates to a processing aid comprising a fluorine-containing polymer having an acid value of 0.5 KOHmg/g or more.
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Description

technical field

[0001] (Cross-reference to related application)

[0002] This application claims the benefit of US Provisional Application No. 61 / 237613 filed August 27, 2009 under 35 U.S.C. 119(e). The entire disclosures of these applications are incorporated herein by reference.

[0003] The present invention relates to a processing aid, a composition for molding, a masterbatch for a processing aid, and a molded article. Background technique

[0004] In the processing of melt-processable thermoplastic polymers, extrusion at a faster speed is required in order to increase productivity and to achieve cost reduction. However, melt-processable thermoplastic polymer compositions always have a critical shear rate, and if this rate is exceeded, a surface roughening state called melt fracture occurs, and good molded articles cannot be obtained.

[0005] In order to ameliorate these disadvantages, and to achieve faster extrusion speeds, the use of fluoropolymers as processing ai...

Claims

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