Water spreading films or plates consisting of acrylic polymers and process for their preparation
US5342683A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | May 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns films or plates of acrylic polymers, in particular polymethylmethacrylate, rendered no drop by coating with a monomeric composition, polymerized and reticulated by ultraviolet light, consisting of: PA1 a) from 50 to 70% by weight of acrylates or methacrylates of C.sub.1 -C.sub.12 alkyls, C.sub.4 -C.sub.12 cycloalkyl, polycycloalkyl or alkylidene having from 7 to 14 C atoms; PA1 b) from 10 to 30% of acrylate or methacrylate of C.sub.2 -C.sub.6 hydroxyalkyl; PA1 c) from 10 to 30% by weight of acrylic or methacrylic acid or their salts; PA1 d) from 1 to 10% by weight of a reticulation agent consisting of a polyfunctional acrylic monomer; PA1 e) from 0.01 to 3% by weight of hydrophilic colloidal metal oxides; PA1 f) from 0 to 0.06% by weight of a U.V. polymerization initiator, being 100 the sum of the a)+b)+c)+d)+e)+f) amounts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.