发明公开
EP0985691A1 Process for preparing hydrophobically modified low foaming copolymers, hydrophobically modified low foaming copolymers and their use as cement additives
审中-公开
基本信息:
- 专利标题： Process for preparing hydrophobically modified low foaming copolymers, hydrophobically modified low foaming copolymers and their use as cement additives
- 专利标题（中）：一种制备疏水改性低发泡共聚物的方法hydrofobisch改性共聚物及其作为水泥添加剂使用
- 申请号：EP98117115.0 申请日：1998-09-10
- 公开(公告)号：EP0985691A1 公开(公告)日：2000-03-15
- 发明人： Eiffler, Jürgen, Dr.
- 申请人： Dow Deutschland Inc., Zweigniederlassung Stade
- 申请人地址： Buetzflethersand 21683 Stade DE
- 专利权人： Dow Deutschland Inc., Zweigniederlassung Stade
- 当前专利权人： Dow Deutschland Inc., Zweigniederlassung Stade
- 当前专利权人地址： Buetzflethersand 21683 Stade DE
- 代理机构： Patentanwälte Sternagel & Fleischer
- 主分类号： C08F283/06
- IPC分类号： C08F283/06 ; C08F220/04 ; C08F222/02 ; C04B24/26
摘要：
The present invention refers to a process for the preparation of a copolymer containing structural units derived from alpha, beta unsaturated mono- or dicarboxylic acids and their salts, half-esters of dicarboxylic acids or salts thereof, an olefin and a hydrophobic moiety, said hydrophobic moiety being incorporated into the copolymer chain; said process comprises reacting
a) at least one monomer selected from alpha, beta unsaturated mono-carboxylic acids and their salts; and alpha, beta unsaturated dicarboxylic acids, their halfesters and salts thereof;
b) at least one monomer selected from olefins; and
c) at least one hydrophobic compound free of olefinic unsaturation containing units of the formula:
wherein R 1 is independently at each occurrence selected from hydrogen and C 1 -C 4 alkyl with the proviso that at least one R 1 is selected from C 1 -C 4 alkyl in an amount of 0.01 to 30 wt% based on the total amount of a), b) and c);
at a temperature in the range of 25°C-100°C, and in the presence of a free-radical initiator in an amount of 1.5wt%-25wt% based on the total weight of a), b) and c), to copolymers obtainable therefrom and the use of these polymers as cement additives.
摘要（中）：
a) at least one monomer selected from alpha, beta unsaturated mono-carboxylic acids and their salts; and alpha, beta unsaturated dicarboxylic acids, their halfesters and salts thereof;
b) at least one monomer selected from olefins; and
c) at least one hydrophobic compound free of olefinic unsaturation containing units of the formula:
wherein R 1 is independently at each occurrence selected from hydrogen and C 1 -C 4 alkyl with the proviso that at least one R 1 is selected from C 1 -C 4 alkyl in an amount of 0.01 to 30 wt% based on the total amount of a), b) and c);
at a temperature in the range of 25°C-100°C, and in the presence of a free-radical initiator in an amount of 1.5wt%-25wt% based on the total weight of a), b) and c), to copolymers obtainable therefrom and the use of these polymers as cement additives.
本发明涉及一种用于从含α，β-不饱和单或二羧酸衍生的结构单元和它们的盐，二羧酸或它们的盐，烯烃和疏水性部分的半酯的共聚物的制备中，所述疏水性 部分被结合到共聚物链; 所述方法包括使从α，β-不饱和单羧酸和它们的盐中选择的）的至少一种单体; 和α，β-不饱和二羧酸的半酯和它们的盐; b）至少一个由烯烃选择单体; 和c）至少一种疏水化合物游离烯烃不饱和含有式单元： worin - [R <1>是unabhängig在选自氢和C1-C4烷基，其条件每次出现做至少一个R <1> 选自C 1 -C 4烷基在的0点01分量基于的总量30重量％），b）和c）; 在25°C-100℃范围内的温度，并在自由基引发剂在存在下的量1.5重量基于的总重量％-25wt％），b）和c） 从共聚可获得的存在和使用聚合物合成的水泥添加剂。
IPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08F | 仅用碳—碳不饱和键反应得到的高分子化合物 |
| ------C08F283/00 | 由单体接到C08G小类所包括的聚合物上聚合而得到的高分子化合物 |
| --------C08F283/06 | .接到聚醚、聚氧化甲烯或聚醛缩醇上 |