Top coating compositions
US5880187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D125/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a top coating composition having: PA1 (A) A hydroxyl-containing vinyl resin containing 40 to 90 wt. % of an aromatic hydrocarbon ring-containing vinyl monomer as a monomer component, optionally in combination with (B) a hydroxyl-containing polyester resin, PA1 (C) hexamethoxymethylmelamine and/or an etherified melamine resin obtained by substituting a part or the whole of the methoxy groups in hexamethoxymethylmelamine by an alkoxy group having at least 4 carbon atoms, PA1 (D) a particulate polymer having an average particle diameter of 0.01 to 1 .mu.m, and PA1 (E) a polysiloxane compound represented by the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each represent a C.sub.1-10 alkyl group, a C.sub.1-10 alkoxy group or a hydroxyl group, R.sub.5 and R.sub.6 are the same or different and each represent C.sub.1-10 alkyl group or a hydrogen atom, and n is an integer of 10 to 1,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.