Paper manufacture with improved retention agents
US4070236A · kind A · utility
26Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1975 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Nov 10, 1995 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/58
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
DISCLOSED is a process for the production of paper and paper-like products which comprises the step of incorporating in the pulp a retention agent comprising a polyalkylene oxide of molecular weight in excess of 1 million and a phenol- or naphthol-formaldehyde or -sulphur resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.