发明名称 |
CONNECTING STUFF FOR PAPER AND CARDBOARD |
摘要 |
The material enables the production of high quality paper and cardboard with increased mechanical strength, improved finish and humidity resistance. The bonding material is a rosin-modified (in our case rosin saponified with sodium hydroxide) styrene-acrylate dispersion in the amount of 1-4% of the completely dry fibrous material. The ratio between the components of the bonding material-modified styrene-acrylate dispersion and rosin is within the ratio 5:1 - 1:1 or styrene-acrylate dispersion and saponified rosin 5:1 - 1:1.
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申请公布号 |
BG48767(A1) |
申请公布日期 |
1991.05.15 |
申请号 |
BG19890089337 |
申请日期 |
1989.07.25 |
申请人 |
VISSH KHIMIKOÙTEKHNOLOGICHESKI INSTITUT |
发明人 |
BENCHEVA, SIJKA P.;IVANOVA, NADEZHDA M.;VALCHEV, VLADIMIR I.;IVANOV, GESHO M.;MASLAROVA, DIMITRINA P. |
分类号 |
D21B1/16;(IPC1-7):D21B1/16 |
主分类号 |
D21B1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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