Kraton Polymers U.S. LLC

Gert Joly

Sonja Marie Oosterbosch

Jaak L Moerenhout

Catherine A L Maris

Carl Lesley Willis

Dale Lee Handlin, Jr

Hendrik De Groot

Jacques Moerenhout

Lie Djiauw

Margaret Ann Burns Clawson

Catherine Maris

A composition to be used for the manufacture of transparent, gelfree films, comprising: a) at least 65 wt % of a styrenic block copolymer, having a molecular structure according to the formula S&#x2014;(I/B)&#x2014;S (1) or [S&#x2014;(I/B)]n X (2), wherein each S independently is a polymer block of predominantly styrene and (I/B) is a substantially random polymer block of predominantly isoprene and butadiene, wherein n is an integer equal to or greater than 2, and wherein X is the residue of a coupling agent, wherein said styrenic block copolymer having a poly(styrene) content in the range of from 28 to 31% by weight, having poly(styrene) blocks S of a true molecular weight in the range of from 10,000 to 15,000, having a true molecular weight of the complete block copolymer in the range of from 110,000 to 160,000 and wherein the diblock S&#x2014;(I/B) optionally occurs in a content of at most 20 mol %, b) from 5 to 25 wt % of a second thermoplastic resin, c) from 1 to 10 wt % of a plasticizing oil, the sum of the percentages of the components a, b and c being 100%, and all weight percentages being relative to the weight of the complete composition and extruded or cast or blown mono- or multi-layer films prepared from them.

Styrenic block copolymer compositions to be used for the manufacture of transparent, gel free films

A composition to be used for the manufacture of fibers, filaments, melt blown or spun bond non-wovens or cast or blown films, comprising at least 50 wt % of a styrenic block copolymer; a polyolefin in an amount of from 10 to 30 wt %; a resin which is compatible with the poly(styrene) blocks in the styrenic block copolymer in an amount of at least 5 wt %, and a resin which is compatible with the hydrogenated polybutadiene blocks in the styrenic block copolymer an amount of at least 3 wt %, wherein all weight percentages are relative to the weight of the complete composition; styrenic block copolymers to be used therein; and fibers, melt blown or spun bond non-wovens or cast or blown films prepared from it.

Blockcopolymer compositions, having improved mechanical properties and processability and styrenic blockcopolymer to be used in them

A composition to be used for the manufacture of mono- or multilayer films for food-wrap applications comprising from 5 to 40 wt % of a styrenic block copolymer, a polyolefin in an amount of at least 40 wt % and optionally a resin which is compatible with the hydrogenated poly(butadiene) blocks of the styrenic block copolymer in an amount of from 0 to 25 % wt, wherein all weight percentages are relative to the weight of the complete composition; a styrenic block copolymer to be used in said composition, and mono- or multi-layer films comprising said composition.

Block copolymer compositions, having improved mechanical properties and processability

The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and conjugated diene mid blocks. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Articles prepared from hydrogenated block copolymers

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Louvain-la-Neuve, Belgium

Gert Joly