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Polyurethane Foam Formulation and Process

IP.com Disclosure Number: IPCOM000087454D
Original Publication Date: 1977-Feb-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Abstract

In developing a roller for driving paper, the desired physical characteristics of primary importance are compression-deflection response, compression set, wear and coefficient of friction. Compression-deflection characteristics of almost all foams can be readily controlled. The remaining characteristics depend largely upon the chemical makeup of the foam.

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Polyurethane Foam Formulation and Process

In developing a roller for driving paper, the desired physical characteristics of primary importance are compression-deflection response, compression set, wear and coefficient of friction. Compression-deflection characteristics of almost all foams can be readily controlled. The remaining characteristics depend largely upon the chemical makeup of the foam.

A roller having all of the above characteristics falling within a desirable range is obtained by first mixing, by finished weight, approximately 55% THANOL* SF-6500 (a triol), 9% THANOL* C-150 (a diol), a trace of a tin catalyst, 3% heated JEFFAMINE* AP-22 (an aromatic amine), 5% of a blowing agent, and 1% of a sieved carbon black. To this mixture is added and blended, again by finished weight, approximately 27% PAPI** 901 (a polymeric isocyanate). The resultant blend is then molded into a roller at room temperature. Thereafter, the roller is cured by applying heat thereto at about 93 degrees C for about 5 hours. * Trademark of Jefferson Chemical Company, Inc. ** Trademark of The Upjohn Company.

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