Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 4006089 | Polyoxyethylene polyamine Mannich base products and use of same in fuels and lubricants The detergency properties of a fuel or a lubricant are improved by adding thereto a Mannich base product prepared by reacting a high molecular weight alkyl substituted hydroxyaromatic compound, a polyoxyethylene polyamine and an aldehyde.... | 02/01/1977 |
| 4001279 | Asymmetric macrocycles containing oxygen and binaphthyl ring members Chiral, hinged and functionalized host multiheteromacrocycles of the oxygen, nitrogen and sulfur-containing type are disclosed possessing holes sized to afford selective complexation of specific guest substances and shapes to recognize chirally guest mole... | 01/04/1977 |
| 3983092 | Phenylindane diamine mixture and epoxy resin therewith A mixture of phenylindane diamines is prepared by a process comprising acid-catalyzed dimerization of -methylstyrene and subsequent nitration and reduction of the phenylindane reaction product. This phenylindane diamine mixture is useful in polymid... | 09/28/1976 |
| 3980785 | Secondary and tertiary-2-phenylbicyclo[2,2,2]oct-3-yl alkylamines and composition thereof Secondary and tertiary 2-phenylbicyclo[2,2,2]oct-3-yl alkyl amines are useful as anti-depressant and anti-Parkinsonism agents. They may be prepared from the corresponding aldehydes, nitriles, amides, isocyanates or esters using known chemical techniques.... | 09/14/1976 |
| 3980706 | Synthesis of 2,7-bisdimethylamino-10-P-dimethylaminophenyl-9,10-dihydro-9,9-dimethyla nthracene The preparation of leucodihydroanthracenes represented by the general formula ##SPC1## Wherein each of Z and Z' is selected from the group consisting of H and dialkylamino, and at least one Z is dialkylamino and each Q is selected from the group cons... | 09/14/1976 |
