Allied Corporation

Alliedsignal Inc.

Other

Allied Chemical Corporation

The C.p. Hall Company

Nicholas Vanderkooi, Jr

Harold W Tuller

John C Haylock

Philip E Stevenson

Robert J Welgos

Murali K Akkapeddi

Charles D Mason

Theodore Largman

Stephen R Schulze

Gerald J Dege

John Christopher Haylock

This invention relates to an improved polyester composition that has a wide temperature range of crystallization. The composition comprises a polyester and a chemically reacting crystallization modifier having the following formula:

Crystallization modifier for polyester molding compositions

Disclosed are compositions and process for the improving the rate of crystallization of polyamide containing compositions which comprise two polyamides having dissimilar melting temperatures, said process comprising the steps of heating the two polyamides to a temperature which is above the melting point of the polyamide having the lower melting temperature but below the melting temperature of the polyamide having the higher melting temperature, as well compositions made in accordance with the process. Preferred polyamides include polycaprolactam and polyhexamethylene adipamide, and the said compositions may optionally include further constituents. The process provided for improved nucleation without the necessity of inorganic nucleation promoters or agents, and articles made in accordance to the process exhibit good physical properties.

Polymer nylon compositions featuring improved rates of crystallization

The present invention is a composition comprising a linear saturated polyester and from 0.5 to 30 percent by weight of thee polyester of at least one ester of an ethoxylated polyfunctional alcohol having a molecular weight of from 500 to about 1,500. The ester is of an ethoxylated aromatic alcohol and a carboxylic acid wherein the ethoxylated aromatic alcohol has the formula

Polyester composition containing an ester of an ethoxylated aromatic

A composition comprising polyethylene terephthalate which contains up to 10% based on the weight of the polyethylene terephthalate of the reaction product of a low viscosity linear saturated polyester having an intrinsic viscosity of from 0.05 to 0.6 and preferably 0.1 to 0.4 and a compound having at least one functional group selected from the class consisting of anhydrides, epoxides, and hydroxyls.

Polyester molding composition containing low viscosity polyester

A linear saturated polyester, such as polyethylene terephthalate containing from 0.1 percent to 20 percent of an amine carboxylate salt. The salt can be tertiary or a quaternary carboxylate salt.

Polyester composition containing tertiary and quaternary amine

A method of forming an amorphous crystallizable thermoplastic polymer composition. The polymer composition has a modulus of rigidity which decreases to a minimum value with increasing temperature and then begins to increase. The process includes heating polymer to below a temperature at which crystal formation occurs and form the polymer. The polymer composition is then heated to a temperature at which crystal formation can occur and be annealed. This process is useful to make articles having a thickness of from 0.127 cm (0.050 inches) to 1.27 cm (0.50 inches) such as sheets and tubes of the amorphous polymer and then reforming and annealing them.

Process to form amorphous, crystallizable thermoplastic polymers

Nucleated polyester composition containing red phosphorus

A polyethylene terephthalate composition comprising the salt of a dimer acid, trimer acid or the salt of a mixture of dimer and trimer acid. The dimer and/or trimer acids are neutralized with a Group IA metal cation, preferably sodium. The composition can contain a filler, plasticizer, impact modifier and/or a polyepoxide.

Nucleation agents for crystalline polymers

A polyester composition comprising: the sodium salt of a hydrocarbon acid; and the ester of an aliphatic carboxylic acid having at least one carboxyl group and from 2 to 8 carbon atoms; and an alcohol having one hydroxyl group and from 1 to 10 carbon atoms. The sodium salt is preferably sodium stearate and the ester is preferably di(2-ethyl-hexyl)adipate. The composition can be filled and have impact modifiers.

Growing community of inventors

Pompton Plains, NJ, United States of America

Nicholas Vanderkooi, Jr