Adhesive composition based on ethylene copolymers obtained by tube copolymerisation, that can be used for extrusion-coating and extrusion-lamination
US11396618B2 · kind B2 · utility
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Key dates
| Filing date | May 11, 2016 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Jan 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2467/006
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An adhesive composition of at least one ethylene polymer or copolymer, wherein at least one first polymer or copolymer including the unsaturated carboxylic acid ester type comonomer is copolymerized in a continuous high-pressure tubular reactor, while a second polymer or copolymer including the functional comonomer is copolymerized by either autoclave or tubular continuous high-pressure radical means; the first and second polymer or copolymer possibly being of one and the same polymer/copolymer. Also, a multilayer structure that incorporates the adhesive composition and a particular process for obtaining this composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.