Ionomer-poly(vinylalcohol) coated substrates
US9796869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Apr 27, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31895
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are methods to form coatings on a substrate, the coatings comprising a blend of a poly(vinyl alcohol) composition comprising a poly(vinyl alcohol) characterized by (i) a hydrolysis level of from about 85 to about 93 mol % and a 4 weight % aqueous viscosity of 15 centipoise (cp) or less; or (ii) a hydrolysis level of about 95 mol % to 100%; and an ionomer comprising a parent acid copolymer that comprises ethylene and about 18 to about 30 weight % of acrylic acid or methacrylic acid, the acid copolymer having a melt flow rate from about 200 to about 1000 g/10 min., wherein about 50% to about 70% of the carboxylic acid groups of the copolymer are neutralized to carboxylic acid salts comprising potassium cations, sodium cations or combinations thereof. Multilayer structures comprising the blend composition on a substrate are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.