Hot-melt pressure-sensitive adhesives for resealable packaging
AssigneeBostik SA
InventorsChristophe ROBERT, Barbara WIEGERT
Life of this patent
Estimating the term…
Abstract
The present invention relates to a hot-melt self-adhesive composition comprising: i) from 40% to 80% by weight of at least one but-1-ene-ethylene copolymer A, said copolymer comprising more than 80% by weight of units derived from but-1-ene; ii) from 1.5% to 4.5% by weight of at least one propylene-ethylene-butene copolymer T, said copolymer T comprising more than 50% by weight of units derived from propylene; iii) at least one nonhydrogenated tackifying resin obtained by polymerization, or copolymerization with an aromatic hydrocarbon, of mixtures of unsaturated aliphatic hydrocarbons having from 4 to 6 carbon atoms resulting from petroleum cuts.
Claims20
1-19. (canceled)
A hot-melt self-adhesive composition comprising:
- i. from 40% to 80% by weight of at least one but-1-ene-ethylene copolymer A, said copolymer comprising more than 80% by weight of units derived from but- 1-ene;
- ii. from 1.5% to 4.5% by weight of at least one propylene-ethylene-butene copolymer T, said copolymer T comprising more than 50% by weight of units derived from propylene;
- iii. at least one nonhydrogenated tackifying resin obtained by polymerization, or copolymerization with an aromatic hydrocarbon, of mixtures of unsaturated aliphatic hydrocarbons having from 4 to 6 carbon atoms resulting from petroleum cuts.
Dependencies are inferred from the claim text.