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특허 상세정보

Process for crosslinking hydrogels with bis- and poly-2- oxazolidinones

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08F-008/30    A61L-015/00   
미국특허분류(USC) 525/3276; 525/3299; 525/375; 524/556; 524/916; 442/417; 604/367
출원번호 US-0601349 (2000-08-18)
우선권정보 DE-0007502 (1998-02-21)
국제출원번호 PCT/EP99/01087 (1999-02-19)
§371/§102 date 20000818 (20000818)
국제공개번호 WO99/42494 (1999-08-26)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보 피인용 횟수 : 89  인용 특허 : 51
초록

The invention relates to a process for the gel or surface postcrosslinking of water-absorbing polymers in which the polymers are treated with a surface postcrosslinking solution and during or after the treatment are postcrosslinked and dried by means of an increase in temperature, the crosslinker being a compound of the formula [EQU1]in which R1 and R2 independently of one another are H, hydroxyl, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 and R5 independently of one another are C1-C12-alkyl, C1-C12-alkenyl,...

대표
청구항

1. A process for the gel or surface postcrosslinking of water-absorbing polymers, comprising; treating polymers with a surface postcrosslinking solution containing a crosslinker, and postcrosslinking and drying by means of an increase in temperature, wherein said crosslinker is a compound of the formula [EQU6]in which R1 and R2 independently of one another are H, hydroxyl, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, N-hydroxy-(C2-C6)-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 a R5 independently of one another are C1-C12-alkoxy or hydrogen, diss...

이 특허에 인용된 특허 (51)

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