Materials

Biopolymers

New Firm Offers PVC Compounds Free of Phthalates & Heavy Metals

WEB EXCLUSIVE: Axiall Corp., Atlanta, the new company that resulted earlier this year from the merger or Georgia Gulf and PPG Industries’ commodities chemicals 大象传媒, has developed flexible and rigid PVC compounds that replace phthalates and heavy-metal stabilizers with organic alternatives.

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Commodity Resins

PE, PVC Prices Up; PP, PS Softening

Polyethylene and PVC prices moved up, while PP and PS prices were headed down by the end of the first quarter and into April.

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polyolefins

Borealis Acquires LLDPE & Plastomer Lines From DSM and ExxonMobil

Acquisition consists of DSM鈥檚 Stamylex LLDPE brand name and product line and ExxonMobil鈥檚 Exact metallocene plastomer products.

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Materials

First PVC Long-Fiber Composites Debut

SolVin has developed聽technology that allows production of what are聽said to be the world鈥檚 first PVC long- or continuous-fiber composites.聽

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Dimensional Stability after Molding—Part 5

All materials possess a property called the coefficient of thermal expansion (CTE). The vast majority of materials increase in size as their temperature increases and decrease in size as their temperature declines.

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Additives

Polyone Sells PVC Resin Business, Forms New Sheet Division

PolyOne Corp., Cleveland, has agreed to sell its vinyl dispersion, blending, and suspension resin assets to Mexichem, S.A.B., de C.V. of Mexico.

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Novel Medical Applications for Copolyesters

One is a surgical instrument that cleans laparoscope lenses in situ during minimally-invasive surgeries鈥攚ith a handle made of a blend of Eastman鈥檚 Ecdel copolyester TPE and its Eastar PETG.

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Most Resin Prices Flat or Lower

Prices of three of the four commodity resins appear to be trending flat-to-down; ditto for three of the four “commodity” engineering resins.

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polyolefins

PP Prices Spike, Others Rise, Too

Prices of four commodity thermoplastics rose in late January and early February, and new increases were announced for this month in PP, PE, and PVC.

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Dimensional Stability after Molding—Part 3

Any process that involves melting and re-solidifying a polymer involves a compromise between achieving the perfect structure and producing a part that can be sold at a price that the market is willing to pay.

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Plastics Size Reduction