发明授权
US4260704A Resins based on novolaks, their production and their use as tackifiers
失效
基于酚醛清漆的树脂，其生产和作为增粘剂的用途
- 专利标题： Resins based on novolaks, their production and their use as tackifiers
- 专利标题（中）： 基于酚醛清漆的树脂，其生产和作为增粘剂的用途
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申请号： US949417申请日： 1978-10-10
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公开(公告)号： US4260704A公开(公告)日： 1981-04-07
- 发明人: Manfred Schmidt , Theo Kemperman , Dieter Freitag , Hermann Fries , Erich Esch
- 申请人： Manfred Schmidt , Theo Kemperman , Dieter Freitag , Hermann Fries , Erich Esch
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX2746138 19771013
- 主分类号： C08L7/00
- IPC分类号： C08L7/00 ; C08G8/00 ; C08G8/04 ; C08G8/12 ; C08L21/00 ; C08L23/00 ; C08L33/00 ; C08L33/02 ; C08L61/12 ; C08L101/00 ; C08G8/28 ; C08L61/14
摘要：
Resins having a softening point of from 50.degree. to 130.degree. C., an OH-number of from 250 to 400 and an iodine number of from 90 to 160, obtainable by reacting an alkyl phenol-formaldehyde novolak or an alkyl phenol mixture-formaldehyde novolak under acid-catalysed conditions with a polunuclear phenol or polynuclear phenol mixture and formaldehyde and/or an aliphatic aldehyde or aliphatic aldehyde mixture, the ratio by weight of the alkyl phenol or alkyl phenol mixture to the polynuclear phenol or polynyclear phenol mixture being from 2.2:1 to 1:10.