Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7378449 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 05/27/2008 |
| 7271302 | Method for brominating organic compounds The present invention relates to processes for the bromination of organic compounds, and to bromination microreactors for carrying out these processes. ... | 09/18/2007 |
| 7129385 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 10/31/2006 |
| 6861566 | Process for producing 1-chloro-4-arylbutane There is provided an industrially advantageous process for producing a 1-chloro-4-arylbutane represented by the general formula (2): wherein R represents hydrogen, lower alkyl, or lower alkoxy, characterized by reactin... | 03/01/2005 |
| 6841707 | Method and apparatus for producing decabromodiphenyl alkanes A method of producing decabromodiphenyl alkanes includes the steps of charging a reaction vessel with bromine and a bromination catalyst and introducing a diphenyl alkane into the vessel at a location above the level of the charge bromine and catalyst. A dip tube ap... | 01/11/2005 |
| 6756513 | Process for preparing monochlorinated hydrocarbons having a high isomeric purity Monochlorinated hydrocarbons of high isomeric purity are prepared by a process, which comprises: reacting a monoalcohol having an alkyl radical having from 3 to 20 carbon atoms with cyanuric chloride; and purifying the resulting monochlorinated hydroca... | 06/29/2004 |
| 5741949 | Continuous bromination process and products thereof A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally a bromination cat... | 04/21/1998 |
| 5457248 | Brominated diphenylalkane products and processes Described are processes for preparing brominated diphenylalkane products which are far whiter than prior known brominated diphenylalkane products. The resultant white brominated diphenylalkane products also form a part of the present invention, as do form... | 10/10/1995 |
| 5420369 | Chloroalkylation of aromatic compounds The co-formation of diarylalkane by-product in the chloroalkylation of an aromatic compound with an aldehyde is minimized by conducting the reaction in a continuous manner in a concentration with agitation and in the presence of both hydrogen sulfate and ... | 05/30/1995 |
| 5268517 | Stereoselective preparation of Z-1,2-diarylallyl chlorides and the conversion thereof into azolylmethyloxiranes, and novel intermediates The preparation of Z-1,2-diarylallyl chlorides of the general formula I ##STR1## in which R1 and R2, independently of one another, are hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or a substituted aromatic radical, an... | 12/07/1993 |
| 5254776 | Synthesis of bromobiphenyls Bromobiphenyls (such as 2-fluoro-4-bromobiphenyl) are synthesized by reacting together a phenylboronic acid (such as phenylboronic acid) and a bromoiodobenzene (such as 2-fluoro-4-bromoiodobenzene). The reaction generally takes place with the aid of a cat... | 10/19/1993 |
| 5136114 | Process for the preparation of geminal diarylalkanes, new geminal diarylalkanes and alk(en)ylated aromatic compounds The invention relates to a new process for the preparation of geminal diarylalkanes of the formula ##STR1## by Friedel-Crafts alkylation of aromatic compounds with specific aliphatic halogen compounds (addition compounds of CCl4 , to ... | 08/04/1992 |
| 4329525 | Production of chlorinated compounds by use of molten salts A compound is chlorinated with chlorine to produce chlorinated product and hydrogen chloride byproduct. Recovered hydrogen chloride byproduct is contacted with oxygen and a molten salt mixture containing the higher and lower valent chlorides of a multival... | 05/11/1982 |
| 4118487 | Substituted azol-1-ylmethanes Azol-1-ylmethanes substituted on the methane carbon atom by (a) phenyl or lower alkyl and (b) by a biphenyl-4-yl, 4-phenoxyphenyl, 4-phenylthiophenyl, 4-phenylsulfinylphenyl or 4-phenylsulfonylphenyl group are antimycotic and antibacterial agents. The com... | 10/03/1978 |
| 3939218 | P-Tert-butyl-diphenylalkane insecticides 1,1-Diphenylalkanes having a p-tert-butyl and a p'-alkyl group substituted thereon are a new class of compounds possessing a broad range of insecticidal activity.... | 02/17/1976 |
| 3932527 | Preparation of p-p-disubstituted diaryl trichloroethanes Preparation of insecticidal, biodegradable compositions comprising mixtures of p-p'disubstituted diaryl trichloroethanes. Chloral, and appropriate substitutal benzenes are condensed, in a single step, at low temperature, e.g., -30°C., using a condensing ... | 01/13/1976 |
