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Process for the production of polyurethane elastomers 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C08G-018/08
  • D01F-006/26
출원번호 US-0489204 (1974-07-17)
우선권정보 DT-2303564 (1973-01-19)
발명자 / 주소
  • Ullrich Martin (Leverkusen DT) Meisert Ernst (Leverkusen DT) Eitel Alfred (Dormagen DT)
출원인 / 주소
  • Bayer Aktiengesellschaft (Leverkusen DT 03)
인용정보 피인용 횟수 : 79  인용 특허 : 0

초록 ▼

The instant invention is directed to the discovery that it is now possible to obtain high quality, elastomeric polyurethanes or polyureas, even when using highly reactive diamines as chain lengthening agents, without the formation of unwanted irregularities, if the mixture of reactants is exposed to

대표청구항 ▼

In a process for the continuous production of polyurethane (urea) elastomers by simultaneous reaction and extrusion in screw extruders, wherein polyisocyanates, polyols and/or polyamines, optionally other compounds which contain an average of at least 1.8 Zerewitinoff-active groups and optionally a

이 특허를 인용한 특허 (79)

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