发明名称 |
Method for polymerisation of (meth)acrylic acid in solution, polymer solutions obtained and their uses |
摘要 |
The present invention relates to a new solvent-free preparation method of a (meth)acrylic acid polymer in solution, where said polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3 by radical polymerization, the polymers obtained by this means, and their applications in industry. |
申请公布号 |
US9150722(B2) |
申请公布日期 |
2015.10.06 |
申请号 |
US201314037622 |
申请日期 |
2013.09.26 |
申请人 |
COATEX |
发明人 |
Suau Jean-Marc;Jacquemet Christian;Mongoin Jacques |
分类号 |
C08L33/10;C08F20/06;C08F2/38 |
主分类号 |
C08L33/10 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A method for the organic solvent-free preparation of a (meth)acrylic acid polymer in solution, where said (meth)acrylic acid polymer has a molecular weight less than 8,000 g/mol and a polydispersity IP index between 2 and 3, said method comprising:
a) introducing water, and optionally a water-soluble metal salt-based catalyst, into a synthesis reactor, b) heating the synthesis reactor to a temperature of at least 60° C., c) continuously and simultaneously introducing into the reactor:
b1) a (meth)acrylic acid monomer,b2) a compound of formula (I): wherein:
X represents Na, K or H, andR represents an alkyl chain having from 1 to 5 carbon atoms, andb3) a polymerisation initiator, where the mass percentage (weight/weight) between the compound of formula (I) and the (meth)acrylic acid monomer is 0.1-2.5%. |
地址 |
Genay FR |