申请人:The B.F. GOODRICH Company
公开号:EP0047009A1
公开(公告)日:1982-03-10
Highly water absorbent polymers are obtained by polymerizing 70 to 93 weight percent of acrylic acid and 7 to 30 weight percent of a comonomer selected from a-olefins having 6 to 18 carbon atoms, styrene and substituted styrenes. The polymerization can be carried out in the presence of a free radical catalyst in which case the polymer is thereafter preferably neutralized with a base. Alternatively, carboxylic groups are neutralized prior to polymerization by subjecting the monomer mixture either to radiation or to UV light in the presence of a photoinitiator. Such polymers are useful in the manufacture of articles which absorb water or body fluids.
高吸水性聚合物是由 70 至 93 重量百分比的丙烯酸和 7 至 30 重量百分比的共聚单体聚合而成,共聚单体选自具有 6 至 18 个碳原子的 a-烯烃、苯乙烯和取代的苯乙烯。聚合反应可在自由基催化剂存在下进行,在这种情况下,聚合物随后最好用碱中和。或者,在聚合之前,先将单体混合物置于有光引发剂存在的辐射或紫外线下,使羧基中和。这种聚合物可用于制造吸水或体液的物品。