Celanese Gmbh

Daniel Zimmerman

Shau-Zou Lu

Kavilipalayam Natarajan

Harvey S Bierenbaum

John A Penoyer

An improved molding composition is provided comprised of an oxymethylene polymer, a blocked or unblocked isocyanate compound in an amount ranging from about 0.2 to 2.0 percent by weight based on the weight of the polymer, a filler and an isocyanate-active catalyst. Shaped articles can be produced from the composition which exhibit desirable mechanical properties without the need for fibrous reinforcing agents.

Isocyanate-coupled reinforced oxymethylene polymers

Provided is a glass reinforced molding composition which comprises a mixture of (i) a copolymer of trioxane and a cyclic ether or cyclic acetal or linear polyacetal, (ii) a terpolymer of trioxane, a cyclic ether and/or cyclic acetal and a diglycide of the formula ##STR1## wherein Z is a carbon-to-carbon bond, an oxygen or oxyalkoxy of 1 to 8 carbon atoms or an oxy-poly(lower alkoxy), and (iii) a glass reinforcing agent. The resulting glass reinforced composition exhibits improved property retention, e.g., of properties such as tensile strength.

Glass reinforced poly(oxymethylene) composition having improved property

An improved process for the manufacture of stretched polymeric films. In this process more than two plies of polymeric film are simultaneously stretched. The process of this invention is particularly applicable to those films which must remain free of surface irregularities. For example, the properties of microporous polymeric films are significantly improved by the process of this invention.

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East Brunswick, NJ, United States of America

Daniel Zimmerman