Pressure-sensitive adhesives
US6254985A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2891
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pressure-sensitive adhesives comprising an aqueous polymer dispersion wherein the polymer is composed of from 60 to 95% by weight of a mixture comprising at least one C.sub.4 -alkyl acrylate and at least one C.sub.6 -C.sub.12 -alkyl acrylate (monomers a) from 5 to 30% by weight of ethylenically unsaturated com- pounds having a glass transition temperature of above 0.degree. C. and contain- ing no functional groups other than the ethylenically unsaturated group (monomers b), from 0 to 10% by weight of ethylenically unsaturated com- pounds having at least one acid group or acid anhydride group (mono- mers c), from 0 to 20% by weight of further ethylenically unsaturated compounds (monomers d), the weight percentages being based on the polymer and the polymer dispersion comprising an emulsifier consisting to the extent of at least 5% by weight of aromatic carbon atoms (and called aromatic emulsifier for short) or an emulsifier mixture consisting to the extent of at least 10% by weight of an aromatic emulsifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.