Plastic bottles and process for preparation thereof
US4486378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1984 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Apr 12, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2427/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic bottle has as a wall-forming component a layer of a copolymer consisting essentially of 99 to 70% by weight of vinylidene cloride and 1 to 40% by weight of at least one acrylic or methacrylic monomer and further including up to 100 parts by weight of at least one member selected from other ethylenically unsaturated monomers per 100 parts by weight of the total amount of the first two monomers, the copolymer having an oxygen permeability constant of less than 9.times.10.sup.-14 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg as measured at a temperature of 20.degree. C. and a relative humidity of 100% and a water vapor permeability constant of less than 3.times.10.sup.-3 g.multidot.cm/m.sup.2 .multidot.day as determined according to the method of JIS Z-0208. This plastic bottle is obtained by casting an aqueous latex or the like of the above-mentioned copolymer in a bottle mold and drying the cast latex. This aqueous latex may be formed as a coating layer on a preformed plastic bottle. In this plastic bottle, the humidity dependency of the oxygen barrier property is prominently reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.