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US 9,957,386 B2Granted
Antistatic thermoplastic starch alloys
AssigneeArkema Inc.
InventorLaurent B. Cartier
Life of this patent
Estimating the term…
Abstract
The invention relates to the use of an alloy of thermoplastic starch and a hydrophilic thermoplastic elastomer as an anti-static additive. The additive improves the anti-static properties of a polymer matrix.
Claims9
An antistatic polymer composition comprising a blend of:
- a) a polymer matrix, and
- b) 5-40 weight percent (based on the total polymer composition) comprising a homogeneous blend of TPS and TPE consisting of:
- 1) 10 to 90 weight percent of thermoplastic starch (TPS);
- 2) 10 to 90 weight percent of a hydrophilic thermoplastic elastomer (TPE) selected from the group consisting of:
- a) block copolymers having polyester blocks and polyether blocks (COPE), b) block copolymers having polyurethane blocks and polyether or polyester blocks (TPU), and c) block copolymers having polyimide blocks and polyether blocks (PEBA), wherein said TPE comprises at least 30 percent by weight of polyethylene glycol;
- c) optionally up to 5 weight percent of other additives.
3 more elements
Dependencies are inferred from the claim text.