-
1.发明授权Method of enhancing polymerization of dialkyldiallyl ammonium compounds to produce high molecular weight polymers 失效增加二烷基二烯丙基铵化合物聚合以产生高分子量聚合物的方法
公开(公告)号：US4742134A
公开(公告)日：1988-05-03
申请号：US921697
申请日：1986-10-22
IPC分类号： C08F26/02 , C08F2/18 , C08F126/02
CPC分类号： C08F26/02
摘要： An improved method for preparing a polymer of a dialkyldiallyl ammonium compound comprising effecting polymerization in the presence of a free radical initiator and sufficient fluoride ion to increase the molecular weight of the polymer and accelerate the rate of polymerization.
摘要翻译： 一种制备二烷基二烯丙基铵化合物的聚合物的改进方法，包括在自由基引发剂和足够的氟离子存在下进行聚合以提高聚合物的分子量并加速聚合速度。
-
2.发明授权
公开(公告)号：US4400496A
公开(公告)日：1983-08-23
申请号：US188999
申请日：1980-09-22
IPC分类号： C08F251/00 , C08L3/12
CPC分类号： C08F251/00
摘要： Graft copolymers having starch as the central chain with grafted side chains of acrylamide or acrylamide-acrylic acid, and a process for preparation of such copolymers in the presence of Ce.sup.+4 or other redox initiators. These copolymers are employed in preparing highly viscous aqueous solutions that are particularly useful in oil recovery from subterranean wells.
摘要翻译： 具有淀粉作为中心链的接枝共聚物与丙烯酰胺或丙烯酰胺 - 丙烯酸的接枝侧链，以及在Ce + 4或其它氧化还原引发剂存在下制备这些共聚物的方法。 这些共聚物用于制备高度粘稠的水溶液，其特别适用于从地下井中回收油。
-
3.发明授权Solvolytic degradation of pyrotechnic materials containing crosslinked polymers 失效含有交联聚合物的烟火材料的溶剂分解降解
公开(公告)号：US4098627A
公开(公告)日：1978-07-04
申请号：US750990
申请日：1976-12-15
CPC分类号： C06B21/0091 , Y10S149/124
摘要： Pyrotechnic materials containing a crosslinked polymer as a component thef are decomposed by heating to a temperature of about 50.degree. to about 160.degree. C in a liquid medium comprising an active hydrogen containing compound capable of cleaving the chemical bonds contained in said polymer. One or more components of the pyrotechnic material may be separated from the products of the decomposition and reclaimed.
摘要翻译： 含有交联聚合物作为其成分的烟火材料在包含能够裂解所述聚合物中所含的化学键的含活性氢化合物的液体介质中通过加热至约50至约160℃的温度而分解。 烟火材料的一种或多种组分可以与分解和回收的产物分离。
-
公开(公告)号：US3962206A
公开(公告)日：1976-06-08
申请号：US489889
申请日：1974-07-19
申请人： George B. Butler
发明人： George B. Butler
IPC分类号： B01D15/08 , B01J20/291 , C08F6/04
CPC分类号： B01J20/291 , B01D15/34 , B01J2220/54
摘要： A gel chromatographic method of fractionating ionic polymer systems comprising passing the system through a gel chromatography bed of ionic polymer wherein the charge on the gel polymer is identical to the charge on the ionic polymer to be fractionated.
-
-
-
搜索结果
4 条记录 (耗时 0.012 秒)
