| 发明名称 |
Poly(vinyl alcohol-vinylamine)copolymers for improved moist compressive strength of paper products. |
| 摘要 |
<p>A method for preparing a paperboard product by depositing wood pulp from an aqueous slurry containing an effective amount of poly(vinyl alcohol-vinylamine) as a moist compressive strength additive mixture. Preferably the mixture consists essentially of 0.5-5 parts poly(vinyl alcohol-vinylamine) per part anionic polymer.</p> |
| 申请公布号 |
EP0337310(A1) |
申请公布日期 |
1989.10.18 |
| 申请号 |
EP19890106140 |
申请日期 |
1989.04.07 |
| 申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
BECHER, JOSEPH JOHN;STRATTON, ROBERT ALAN;VIJAYENDRAN, BHEEMA RAO |
| 分类号 |
C08L29/04;C08F16/02;C08F26/00;C08F26/02;C08F216/06;C08F226/02;C08L39/00;C08L39/02;D21H11/04;D21H17/28;D21H17/32;D21H17/36;D21H17/43;D21H17/45;D21H21/20;D21H23/76;(IPC1-7):D21H3/38;D21D3/00 |
主分类号 |
C08L29/04 |
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