Process for production of modified thermoplastic resin and...

Details Process for production of modified thermoplastic resin and... Process for production of modified thermoplastic resin and...

2005-03-22

2005-03-22

Sergent, Rabon (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S069000, C525S163000, C525S263000, C525S285000, C521S079000, C521S097000

Reexamination Certificate

active

06870003

ABSTRACT:
A process for producing modified thermoplastic resin by subjecting a thermoplastic resin to a modifying reaction in a molten state, comprising performing the modifying reaction using carbon dioxide as the reaction medium, wherein carbon dioxide is used in a proportion of 2-200 parts by weight per 100 parts by weight of the thermoplastic resin, whereby the efficiency and the uniformity of the reaction can be increased to a high extent while attaining considerable decrease in the remaining amount of the unreacted components in the resulting modified thermoplastic resin without having recourse to the use of an organic reaction solvent, so that the production can be realized easily at a low cost in an efficient manner.

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patent: 5902858 (1999-05-01), Okura et al.
patent: 6114076 (2000-09-01), Odell et al.
patent: 0 506 041 (1992-09-01), None
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patent: 2002-3529 (2002-01-01), None

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