Hermann Staudinger publishes in 1920, in Berichte der Deutschen Chemischen Gesellschaft, the paper "Über Polymerisation" ("On Polymerization"), in which he postulates — against the majority view of organic chemistry at the time — that substances such as natural rubber, starch, cellulose, and proteins are made up of long chains of repeated molecular units joined by covalent bonds, and not of colloidal aggregates of small molecules as prestigious chemists of the time such as Emil Fischer or Heinrich Wieland maintained. Staudinger coins the term "macromolecule" in 1922, in joint work with J. Fritschi on rubber, and devotes much of the 1920s to defending his hypothesis against the scientific community's initial resistance. His motivation stems directly from the study of natural rubber and the anomalously high molecular weights observed in certain organic compounds, not from Baekeland's Bakelite, which is a parallel and independent technological development from his theory — both are part of the same period of ferment in organic materials chemistry, but there is no direct predecessor-to-successor relationship between them. Staudinger's theory becomes established during the 1930s and earns him the Nobel Prize in Chemistry in 1953.