Solvay (Societe Anonyme)

Solvay Sa

Solvay

Christophe Fringant

Yves Vanderveken

Patrick Lacroix-Desmazes

Pascal Dewael

Bernard Boutevin

Vincent Bodart

Romain Severac

Cédric Loubat

Yves Hervaud

Gilles Boutevin

Jeff Tonnar

Berengere Rixens

Bérengère Rixens

An aqueous dispersion containing a vinylidene chloride polymer (P1) containing vinylidene chloride in a proportion of at least 50% by weight, and at least one random, alternating or gradient copolymer (C1) having:

Aqueous dispersion

Process for preparing a composition of a vinylidene chloride polymer and at least one &#x3b5;-caprolactone polymer according to which: Process for preparing articles, in particular films, which includes the use of a composition prepared by the aforementioned process. Single-layer or multilayer film comprising said composition and packaging or bag formed from this film.

Process for preparing a vinylidene chloride polymer composition

Process of controlled free-radical polymerization in aqueous dispersion for the preparation of a block copolymer at least one block of which is a block of a halogenated polymer using molecular iodine and at least one oxidant whose solubility in water is at least 10 g/l for the synthesis of the first block of the block copolymer.

Free-radical polymerization process in aqueous dispersion for the preparation of a block copolymer at least one block of which is a block of a halogenated polymer

The present invention relates to a composition of at least one vinylidene chloride polymer, a process for preparing such a composition, a process for preparing articles, in particular films, which includes the use of such a composition and also the film comprising such a composition and the packaging or bag formed from this film.

Composition of at least one vinylidene chloride polymer

Polymer composition comprising: 1) a polymer (P1) comprising at least 50% by weight of monomeric units derived from an ethylenically unsaturated monomer (M1), and 2) at least one co-oligomer (O1) comprising at least: a) a component (A) comprising at least one monomeric unit identical to that derived from the monomer (M1) on which the polymer (P1) is based, and b) a component (B) comprising at least one monomeric unit (m2), derived from an ethylenically unsaturated monomer, carrying at least one group chosen from the following groups: &#x2014;CHwith a between 6 and 30; &#x2014;(CH)&#x2014;CFwith b between 1 and 11 and c greater than or equal to 5; &#x2014;(CH)&#x2014;(Si(CH)&#x2014;O)&#x2014;Si(CH)with d between 1 and 11 and e between 1 and 1000; &#x2014;COOH; &#x2014;SOH, and the phosphonate groups &#x2014;PO(OH)(OR) with Rbeing a hydrogen atom or an alkyl radical containing from 1 to 11 carbon atoms.

Polymer composition

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Tavaux, France

Christophe Fringant