The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 1979
Filed:
Jul. 15, 1976
Jiri Coupek, Prague, CS;
Jaromir Lukas, Prague, CS;
Jiri Hradil, Prague, CS;
Miroslava Krivakova, Prague, CS;
Ceskoslovenska akademie ved, Prague, CS;
Abstract
The invention relates to macroporous polymeric sorbents prepared by ternary copolymerization of polar monomers, namely hydroxyalkyl acrylates and methacrylates (hydroxyalkyl C.sub.1-6), in the amount of 1 - 70 wt.%, with 30 - 90 wt.% of nonpolar comonomers, namely alkyl acrylates and methacrylates (alkyl C.sub.1-18), and 20 - 80 wt.% of crosslinking agents, namely alkylene diacrylates and dimethacrylates (alkylene C.sub.1-6). The sorbents were prepared by the suspension copolymerization in the presence of inert organic solvents and surfactants in the single step without further chemical modification and their polarity was controlled in a broad region. They are especially suitable for gas-chromatographic separation of organic compounds, as hydrocarbons, alcohols, organic acids and nitrogen-containing heterocyclic compounds. Their preparation in one step is more simple and economical than modification of the polymeric matrix by polymeranalogous reactions which has been used for this purpose until present time.