Film-forming size composition
US5079348A · kind A · utility
8Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1989 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | May 24, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/31
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A film forming composition useful as a paper size is described which includes 1-20 parts, preferably 2-15 parts, by weight of a gum selected from the group consisting of xanthan gum, rhamsan gum, welan gum and mixtures thereof; 3-20 parts, preferably 5-17 parts, by weight of a water soluble alginate; and 60-100 parts, preferably 70-90 parts, by weight of starch, polyvinyl alcohol or carboxymethylcellulose, with the gum:alginate ratio being not greater than 1:1, preferably not greater than 1:2. The balance of the composition will primarily be water. Additives such as sodium hexametaphosphate may also be present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.