发明名称 |
Hollow particles of crosslinked melamine resin having a uniform particle diameter and a process for producing the same |
摘要 |
A process for producing hollow particles of crosslinked melamine resin having a uniform particles diameter, said process comprising subjecting a water-soluble methyl-etherified-melamine resin precondensate to condensation reaction in the presence of a curing catalyst in an aqueous solution containing a water-soluble polymer with carboxyl groups or water-soluble copolymer of ethylenically unsaturated carboxylic acid monomer, when the reaction liquid becomes turbid, adding to the reaction mixture a substance which dissolves or swells the melamine resin, and continuing the condensation reaction, if necessary.
|
申请公布号 |
US5360832(A) |
申请公布日期 |
1994.11.01 |
申请号 |
US19940218692 |
申请日期 |
1994.03.28 |
申请人 |
HONEN CORPORATION |
发明人 |
BITO, MASAMI;KONISHI, SATOSHI;FUKAZAWA, FUMIMASA |
分类号 |
C08J3/12;C08J3/14;C08J3/24;C08J9/32;(IPC1-7):C08J9/32;B01J13/02 |
主分类号 |
C08J3/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|