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公开(公告)号：US3446592A
公开(公告)日：1969-05-27
申请号：US3446592D
申请日：1965-10-21
Applicant: OLIN MATHIESON
Inventor： GAMBARDELLA MARIO A , JACHE ALBERT W , KONGPRICHA SANTAD
CPC classification number: C01B7/24
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2.发明授权Process for controlling the amount of densification in polyurethane foams and products produced thereby 失效用于控制聚氨酯泡沫塑料和生产的产品的浓度的方法
公开(公告)号：US3577519A
公开(公告)日：1971-05-04
申请号：US3577519D
申请日：1968-11-29
Applicant: OLIN MATHIESON
Inventor： GAMBARDELLA MARIO A
CPC classification number: C08J9/36 , C08J9/00 , C08J2375/04 , Y10S521/918
Abstract: THE EXTERIOR, LESS DENSE LAYERS IN A SELECTED, FLEXIBLE DENSIFIED POLYURETHANE FOAM PREPARED BY APPLYING A COMPRESSIVE FORCE TO A PARTIALLY CURED CELLULAR MATERIAL AT A CRITICAL TIME TO REDUCE ITS VOLUME BY A SPECIFIED AMOUNT ARE REDUCED BY MAINTAINING THE COMPRESSIVE FORCE FOR BETWEEN ABOUT 0.1 AND ABOUT 10 MINUTES. IF DESIRED, THE COMPRESSIVE MEANS CAN BE HEATED TO A TEMPERATURE BETWEEN ABOUT 40* AND ABOUT 200*C. THE RESULTING FOAMS ARE PARTICULARLY USEFUL FOR SUCH APPLICATIONS AS RUG PADDING.
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