Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beazer East Inc
Original Assignee
Koppers Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koppers Co IncfiledCriticalKoppers Co Inc
Priority to ES483632ApriorityCriticalpatent/ES483632A1/en
Publication of ES483632A1publicationCriticalpatent/ES483632A1/en
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
(AREA)
Phenolic Resins Or Amino Resins
(AREA)
Abstract
A process for preparing a phenolic foam, comprising: a) preparing a foamable mixture, comprising a foamable phenol-aldehyde resin, a swelling agent and N-methyl-2-pyrrolidone; b) foaming the mixture by the addition of an acid catalyst; and c) cure the phenolic foam. (Machine-translation by Google Translate, not legally binding)
ES483632A1979-08-241979-08-24A procedure for preparing a phenoly foam (Machine-translation by Google Translate, not legally binding)
ExpiredES483632A1
(en)
COMPOSITION FOR THE PREPARATION OF ENRICHED POLYURETHANE FOAMS, ENRICHED POLYURETHANE FOAM AND PROCESS FOR THE PREPARATION OF ENRICHED POLYURETHANE FOAMS