ES2129A2 -
Improvements introduced in the new continuous brake for iron roads, operating by compressed air or vacuum, automatic regulator and moderate.
- Google Patents
Improvements introduced in the new continuous brake for iron roads, operating by compressed air or vacuum, automatic regulator and moderate.
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.)
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WENGER ADOLPHE
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WENGER ADOLPHE
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Priority to ES2129ApriorityCriticalpatent/ES2129A2/en
Publication of ES2129A2publicationCriticalpatent/ES2129A2/en
ES2129A1881-12-311881-12-31
Improvements introduced in the new continuous brake for iron roads, operating by compressed air or vacuum, automatic regulator and moderate.
ExpiredES2129A2
(en)
Process to form a modified phenolic resin composition by combining a catalyst, formaldehyde, water and phenol that reacts to a tolerance to water between 150-1000% forming an intermediate composition, adding 2.5 to 7.5% by weight resocinol and forming a resorcinol modified phenolic resin composition.