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Process for preparing compact expandable urethane foams

  • US 3,306,966 A
  • Filed: 04/08/1963
  • Issued: 02/28/1967
  • Est. Priority Date: 06/15/1962
  • Status: Expired due to Term
First Claim
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1. PROCESS FOR PREPARING COPACT, EXPANDABLE POLYURETHANE FOAMS WHICH COMPRISES IMPREGNATING SAID FOAM WITH A DEFATIGUING AGENT, COMPRESSING THE THUS IMPREGNATED FORM, APPLYING A FIXATING AGENT TO SAID COMPRESSED FOAM WHEREBY THE FOAM RETAINS COMPRESSED FORM

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