|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||260/25 ; B ; 260/25 ; R ; 260/25 ; AM ; 260/25 ; H|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 0|
Novel polymers are described herein which are particularly useful in removing phenolics from waste streams. The polymers are prepared by reacting an oxazoline or oxazine (preferably 2-methyl or ethyl-2-oxazoline) with a cross-linked vinylaromatic polymer bearing pendant halomethyl groups on the aromatic rings. Macroporous beads prepared by reacting cross-linked chloromethylated polystyrene with 2-methyl and/or 2-ethyl-2-oxazoline are particularly useful embodiments in removing phenolics from aqueous waste streams and are used to remove phenolics (e.g. ta...
A liquid-permeable, water-insoluble, synthetic resinous body, capable of removing a phenol from a phenol solution in contact therewith, comprising a cross-linked vinyl-addition polymer whose backbone contains a plurality of units corresponding to the formula －(CH2－CR1－ │ Ar－CH2－N－CR3R4－CH2－mCR5R6－nX │ O=C－R2 wherein: R1 is hydrogen or methyl; R2 is hydrogen, phenyl or alkyl of from 1 to about 24 carbon atoms; R3-R6 are each independently hydrogen, lower alkyl or hydroxy-substituted lower alkyl, with the proviso that at least two of R3-R6 are hydrogen; Ar...