Russia scientists, availability

An anesthetic drug, Richlocaine, developed jointly by scientists from Kazakhstan and Russia, and commercially available biologically active substances bovine serum albumin, lysozyme, and catalase were used. Hydrogels of acrylamide and acrylic acid copolymer(AA-AAc),poly(N-isopropylacrylamide)(PNIPA),N-isopropylacrylamide and acrylic acid copolymer (NlPA-AAc), N-isopropylacrylamide and 2-(acrylamido)-2-propanesulfonic acid copolymer (NIPA-APSA) were synthesized. Diffusion parameters of bioactive substances into hydrogel matrices were calculated using Eq. (19.1) ... 

In coimtries that had no access to the tropical plantations of rubber trees, especially in Russia and Germany, scientists tried to work out how to make sjmthetic rubber from available raw materials. The studies were a success. They foimd a way of making sjmthetic rubber from butadiene and in the 1930s production started. It worked out well, S5mthetic rubber was satisfactory, and looked very similar to natmal rubber. 

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