ES276326A1 - Procedure for the posthalogenation of resins containing halogen (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the posthalogenation of resins containing halogen (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Goodrich Corp
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BF Goodrich Corp
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Publication date
Priority claimed from US101654Aexternal-prioritypatent/US3100762A/en
Application filed by BF Goodrich CorpfiledCriticalBF Goodrich Corp
Publication of ES276326A1publicationCriticalpatent/ES276326A1/en
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
Process for the post-halogenation of halogen-containing resins, concerning polymerizable resins containing a vinyl halide, particularly high-polymerization resins, containing vinyl chloride, characterized in that chlorine gas is passed through a stirred suspension of a smaller proportion of a macro-granular polyvinyl chloride resin whose substantial particle totality has a diameter greater than 10 microns containing said particles between about 5 to about 50 volume% of porous space, in a larger proportion of an aqueous medium containing from about 5 to about 25% by volume, relative to the total liquid volume of said medium, of a chloromethane as a swelling agent, while maintaining said suspension at a temperature of from 60 to 100º C and at a pressure of 20 to 80 pounds per square inch, with substantial absence of oxygen and photo-illumination, the said polyvinyl chloride resin having a molecular weight of at least equivalent to that of a polyvinyl chloride with a specific viscosity of 0.40, separating the macro-granular solid product from said suspension and neutralizing it. said solid product. (Machine-translation by Google Translate, not legally binding)
ES276326A1961-04-101962-04-09Procedure for the posthalogenation of resins containing halogen (Machine-translation by Google Translate, not legally binding)
ExpiredES276326A1
(en)
A procedure to separate a soluble organic substance in dissolved water, from an aqueous medium that contains it. (Machine-translation by Google Translate, not legally binding)