Polysaccharide adhesives for multi-ply paper products
US6379447B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Apr 5, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous, light weight paper laminating adhesive comprising a continuous aqueous phase of from about 15 to 50% by weight of polysaccharide material dispersed in water, the continuous phase polysaccharide material having a zero-shear viscosity of greater than 0.07 Pa·s when measured at 26% (+/−1% solids) and a shear rate of 0.1s−1; a shear-thinning index of 0.90 to 1.1; and bleed time of greater than 15 seconds. Also disclosed is another adhesive composition, which is particularly useful in non-contact spay applications and comprises the continuous phase polysaccharide phase described above as well as a second component comprising a water swellable, insoluble polysaccharide particulate phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.