BASF patents

The BASF patent from 1913 describes the manufacture of these products by the one-pot reaction of naphthalene, sulfuric acid, and formaldehyde. Quantitatively these polycondensates find their most important use in the textile industry. Although these compounds have been in use for many years, relatively little is known about their constitution. Extensive examinations of their systhesis and structures were recently carried out by Pochini [179,180]. 

BASF Patents. A BASF process for HIPS as described by the patent to Bronstert et al (3 ) is related closely to the patent of Ruffing ( ) discussed above. 

Mackewitz T, Ahlers W, Zeller E, Roper M, Paciello R, Knoll K, Papp R, Voss H (2002) BASF patent WO 02 00669 A3. 

A first patent for the technical implementation of ozonolysis of OA was claimed by Rieche [21]. According to a BASF patent filed in 1941, AA (97%) and PA (95%) are accessible by treatment of the ozonide with alkaline lye and Ag20 [22]. However, the technical manufacturing of AA succeeded first by Emery Industries in the year 1953 [23]. Their successor Emery Oleochemicals is still the worlds largest producer of AA by ozonolysis of OA with a production volume of about lOOOOt/year [9, 24]. The achievable yield of AA is 70-80% [24], based on the amount of applied OA. AA yields of more than 90% were obtained in a pilot plant [25]. The reaction is carried out in PA/water (70/30v/v) as solvent. The admixture of water reduces the formation of side products by removal of the heat of reaction via evaporative heat loss, and in addition, undesired reactive radicals are quenched by reaction with water [25, 26]. 

To these three, was added a fourth, the application of the Haber-Bosch process for the high-pressure catalytic combination of atmospheric nitrogen and hydrogen to produce ammonia. This was also the most promising route to the nitric acid needed for munitions production. The work of Fritz Haber had been financed by the Badische (BASF), patented in 1909, and developed at the BASF factory in Ludwigshafen between 1910 and 1911. The first ammonia factory was opened at Oppau in 1913. The... 

The launch of topramezone (27, Fig. 4.4.8) for the post application com market was for 2006 under the trade names Impact in USA and Canada and Clio in Germany and Austria. The compound is based on a BASF patent from 1995 [29]. 

Many synthesis methods are described in BASF patents [49] six main N-1 intermediate can be found in the literature, which are gathered in Scheme 17.7, together with the patent application number and its year of publication ... 

Processes for the synthesis of metrafenone have been described in two BASF patents [19, 20]. The benzophenone can be obtained by an iron(iii) chloride catalyzed Friedel-Crafts acylation of 3,4,5-trimethoxytoluene. The appropriate benzoyl chloride is easily accessible by bromination of 2-methoxy-6-methylbenzoic acid and subsequent conversion into the acid chloride. (Scheme 22.2)... 

A BASF patent [30] describes the transformation of 81 into 4-chloro-2-methylbut-2-enal (88), which is an ideal precursor for the preparation of (3-methyl-4-oxobut-2-enyl)-triphenyl-phosphonium chloride (89). The phosphonium salt 89 is usually acetalized before being used in Wittig condensations [19,31]. Acetylation of 88 with potassium acetate in anhydrous ethanol furnished the acetoxyaldehyde 73 in high yield [32]. 

Brunner, Mond Co. announced in May 1921 (evidently without prior negotiations with BASF) that it had obtained from the British government a license under the Treaty to use confiscated BASF patents to make synthetic ammonia. Bosch complained to Walther Rathenau, Minister for Reconstruction, but he could offer no help. Even so, the British could only get the process to work, in 1923, with information purchased from Alsatian engineers who had worked in Germany during the war. ... 

BASF teamed with Philip Services to open the first facility in North America for recycling rigid and semirigid polyurethane in 1997. This plant used a BASF-patented glycolysis process and was designed first for automotive waste, with the intention to expand to other waste streams.However, the facility appears to be no longer in operation. 

To improve the low-temperature fiexibility of PP, it was blended with 5-20 wt% polyisobutylene (PIB). The Montecatini patent was the first one on the low-temperature modification of PP. The Esso patent used butyl rubber, BR, the Sun Oil document, 5-50 wt% PE (MW =1.6 Mg mol for high impact strength and low brittleness temperature). BASF patent described the use of narrow MWD PIB (0.5 0 wt%)... 

Low-density polyethylene (LDPE) was blended with polyisobutylene, 25 0 wt% (PIB), and a copolymer of styrene and isobutylene, 0-10 wt% (PSIB), for the use as transparent, impermeable, shrink-wrap packaging films. In the Phillips patent, LLDPE was blended with PIB to manufacture grocery bags. In the BASF patent, a pre-blend comprising 60 wt% PIB and LDPE was granulated and subsequently compounded with LDPE... 

A new route to urethanes avoids phosgene and isocyanates by reacting amines and alcohols directly with CO over a catalyst in the presence of an acid. The urethanes 332 hitherto prepared in this way have been designed to be cracked to isocyanates 333, and a new BASF patent application covers both the synthesis of urethanes and their thermolysis to isocyanates [215]. The catalyst consists of a cationic Group VIII metal (e.g. Pd) with weakly coordinating counterions and methylene-bis-phosphine ligands. 

In 2000, BASF patented the use of Rh hydroformylation catalysts based on pyrrolylphosphonites 1-3 (Scheme 2.125) [11]. 

BASF patented the hydroformylation of 2,6-dimethylhept-l-en-6-ol, obtainable from the corresponding ketone via Grignard reaction (Scheme 6.41) [133]. The reaction with syngas was performed in the 1 kg scale with an unmodified Rh catalyst to afford 3,7-dimethyloctan-l-al-7-ol (hydroxycitronellal) in 90% yield. The use of a PPhg-modified catalyst did not improve this result. Usually, hydroxycitronellal is extracted from ethereal oils or can be alternatively produced by the hydration of citronellal bisulfite in an acidic medium [134]. The annual production is about 11001 [135]. The oil has a sweet floral scent, which is reminiscent of lilac, lily, lily of the valley, or lime. By the same protocol, also related hydroxy aldehydes with other interesting olfactory properties become accessible. 

Buxbaum (1998), citing a BASF patent (DE-OS 2 517 713, 1975), mentions modem pigments of composition (Fe,Cr)203. 

A German company, BASF, patented one such process. It is known as particle recycling and involves recycling a common thermoset material called sheet moulding compound (SMC). This is a thermoset material mainly used for structural purposes and has a high level of fibre reinforcement in it. A closed loop system was proposed and set up, with the first recycled parts being used in 1992. The process involves several stages. The... 

After the departure of Caro, Bemthsen received a more senior appointment, and was placed in full charge of the central research laboratory. The main problem of Bemthsen s position appears to have been his relationships with the heads of the production departments Glaser and Brunck. Accordingly, he tried to obtain information about the ongoing affairs of the business indirectly, and mainly through his work for the patent lawyer Max Hecht. After the death of Hecht in 1897, Bemth-sen, who had been, prior to this date, in charge of patent consultancy, took over the BASF patent office and merged it with the main laboratory. From 1897, Bemthsen was head of the complete laboratory, with Paul Julius as head of the scientific section and Julius Abel as head (or assistant) of the patent laboratory. Thus both heads of research at BASF moved to patent work in the course of their careers. 

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