Adhesives for flexible laminates
US6132886A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Laminates made with an adhesive comprised of a polymerizable composition containing compounds based on N-acylamido-piperazines are provided. Such compounds have the formula: ##STR1## wherein: R.sup.1, R.sup.2, and R.sup.3 are each independently selected from the group consisting of hydrogen and lower alkyl; PA1 B is a linking group selected from the group consisting of carbonyl, sulfonyl, amide, and carboxyl; PA1 n is one or zero; and PA1 R.sup.4 is a radical selected from the group consisting of a higher aliphatic group (i.e. at least four carbon atoms, preferably from about 6 to about 50 carbon atoms), a substituted higher aliphatic group, an alicyclic group, a heterocyclic group, a non-benzenoid aromatic group, and a substituted aromatic group. The adhesive coating is exposed to ultra-violet radiation sufficient to cause the compound to polymerize and thus cure the adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.