发明名称 |
Starch-(meth)acrylate graft copolymer, oil-swellable material and oil- and water-swellable material comprising the same, and sealing articles and packers prepared from said swellable material |
摘要 |
The present invention provides a starch-(meth)acrylate graft copolymer and the preparation process thereof. The starch-(meth)acrylate graft copolymer is prepared by copolymerizing (meth)acrylate monomer and starch in a weight ratio of (0.4˜8):1, the graft copolymer having a skeleton of large starch molecule is grafted with one or more (meth)acrylate monomer with a grafting ratio of no less than 70%. The present invention further provides an oil swellable material, which comprises the starch-(meth)acrylate graft copolymer above as the swelling agent; and also an oil- and water-swellable material, which comprises the starch-(meth)acrylate graft copolymer above, water absorbing agent, reactive monomer, surfactant and material matrix. Further, sealing articles and packers prepared from the above oil swellable material and oil- and water-swellable material are also provided.
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申请公布号 |
US8053509(B2) |
申请公布日期 |
2011.11.08 |
申请号 |
US20060159728 |
申请日期 |
2006.12.30 |
申请人 |
STARSE ENERGY AND TECHNOLOGY (GROUP) CO., LTD. |
发明人 |
WANG QIANG;CAO AILI;YI HUIAN |
分类号 |
C08F290/04;C08K5/15;C08K5/1545;C08L51/00;C08L51/08 |
主分类号 |
C08F290/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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