Thermoplastic polyoxymethylene molding resins

Claim 2

AN IMPROVED THERMOPLASTIC MOLDING RESIN COMPRISING A NORMALLY SOLID OXYMETHYLENE POLYMER HAVING ANINHERENT VISCOSITY OF AT LEAST 1.0 (MEASURED AT 60*C, IN A 0.1 WEIGHT PERCENT SOLUTION IN P-CHLOROPHENOL CONTAINING 2 WEIGHT PERCENT OF ALPHA-PINENE), A MOLECULAR WEIGHT OF AT LEAST 10,000 AND A MELTING POINT OF AT LEAST 150*C., REINFORCING AGENTS INTIMATELY MIXED WITH SAID POLYMER, AND FROM ABOUT 0.1 TO ABOUT 8 WEIGHT PERCENT OF A THERMOPLASTIC PHENOXY RESIN HAVING A REPEATING STRUCTURE:

Claim 3

The product of claim 1 wherein the amount of reinforcing agent ranges from about 5 to about 60 weight percent of the total thermoplastic molding resin.

Claim 4

The product of claim 2 wherein the reinforcing agents are glass fibers.

Claim 5

The product of claim 2 wherein the reinforcing agent is acicular calcium metasilicate.

Claim 6

The product of claim 2 wherein the oxymethylene polymer is a capped homopolymer.

Claim 7

The product of claim 2 wherein said oxymethylene polymer is an oxymethylene copolymer comprising from about 85 mole percent to 99.9 mole percent recurring -OCH2- groups.

Claim 8

The product of claim 2 wherein the amount of phenoxy resin ranges from about 0.5 to 3 weight percent of the total thermoplastic molding resin and said phenoxy resin having an average molecular weight ranging from about 20,000 to about 50, 000.

Claim 9

A process for producing an improved thermoplastic molding resin wherein a normally solid oxymethylene polymer having an inherent viscosity of at least 1.0 (measured at 60*C. in a 0.1 weight percent solution in p-chlorophenol containing 2 weight percent of alpha-pinene), a molecular weight of at least 10,000, and a melting point of at least 150*C., is intimately mixed with about 5 to 60 weight percent of the total molding resin of a reinforcing agent in the presence of from about 0.1 to about 8 weight percent of the total molding resin of a thermoplastic phenoxy resin having a repeating structure

Claim 10

A process for producing an improved thermoplastic molding resin wherein a normally solid oxymethylene polymer having an inherent viscosity of at least 1.0 (measured at 60*C. in a 0.1 weight percent solution in p-chlorophenol containing 2 weight percent of alpha-pinene), a molecular weight of at least 10,000, and a melting point of at least 150*C., is intimately mixed with about 5 to 60 weight percent of the total molding resin of a reinforcing agent in the presence of from about 0.1 to about 8 weight percent of the total molding resin of a thermoplastic phenoxy resin having a repeating structure

Claim 11

The process of claim 8 wherein the reinforcing agent is glass fibers.

Claim 12

The process of claim 9 wherein the thermoplastic phenoxy resin is incorporated on the reinforcing agent and then intimately mixed with the polyoxymethylene polymer.