再颁专利
- 专利标题: Multiblock hydrogenated polymers for adhesives
- 专利标题(中): 用于粘合剂的多嵌段氢化聚合物
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申请号: US805599申请日: 1997-02-26
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公开(公告)号: USRE36757E公开(公告)日: 2000-06-27
- 发明人: Glenn Roy Himes
- 申请人: Glenn Roy Himes
- 申请人地址: TX Houston
- 专利权人: Shell Oil Company
- 当前专利权人: Shell Oil Company
- 当前专利权人地址: TX Houston
- 主分类号: C08F297/04
- IPC分类号: C08F297/04 ; C08L53/02 ; C09J153/00 ; C09J153/02
摘要:
The present invention encompasses nontapered block copolymers of the following structure and adhesives containing themD--A--(B--A).sub.n --D.sub.xor(D--A--B).sub.z --Ywhere A is a vinyl aromatic hydrocarbon polymer block, B and D are hydrogenated conjugated diene polymer blocks wherein if the diene is butadiene, it must have a vinyl content of at least 30 percent by weight, n is an integer from 1 to 5, x is 0 or 1, z is an integer from 2 to 30, and Y is a multifunctional coupling agent and the copolymer has a vinyl aromatic hydrocarbon content of from 9 to 35 percent by weight. The ratio of the molecular weight of D to that of B ranges in accordance with the normalized molecular weight factor which may range from greater than 0 up to 180.times.10.sup.-6.
公开/授权文献
- US5286479A Oral compositions for suppressing mouth odors 公开/授权日:1994-02-15
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