Patents by Inventor Lewis B. Young
Lewis B. Young has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5026933Abstract: A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure which comprises contacting the lower olefin under oligomerization/polymerization conditions with siliceous acidic ZSM-23 zeolite having Bronsted acid activity; wherein the zeolite has acidic pore activity and wherein the zeolite surface is rendered substantially inactive for acidic reactions. The zeolite surface can be neutralized by a bulky pyridine compound having an effective cross-section larger than the zeolite pore. The preferred deactivating agent is 2,4,6-collidine, which may be applied to the zeolite as a pretreatment or added with olefin feed in a continuous process. The olefin oligomers may be used as alkylating agents to prepare biodegradable alkylbenzenes and alkylphenylsulfonates. A preferred catalyst for this alkylation reaction is dealuminized mordenite.Type: GrantFiled: July 18, 1989Date of Patent: June 25, 1991Assignee: Mobil Oil CorporationInventors: David A. Blain, Nancy M. Page, Lewis B. Young
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Patent number: 4982030Abstract: There is provided a method for preparing para-divinylbenzene by dehydrogenating para-diethylbenzene followed by crystallizing para-divinylbenzene. The para-diethylbenzene may be prepared by alkylating ethylbenzene with ethylene in the presence of a para-selective molecular sieve catalyst, such as ZSM-5 modified with an oxide of magnesium and, optionally, an oxide of phosphorus.Type: GrantFiled: July 3, 1989Date of Patent: January 1, 1991Assignee: Mobil Oil CorporationInventors: Warren W. Kaeding, John M. Klosek, Philip J. Yannich, Jr., Lewis B. Young
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Patent number: 4870038Abstract: A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure which comprises contacting the lower olefin under oligomerization/polymerization conditions with siliceous acidic ZSM-23 zeolite having Bronsted acid activity; wherein the zeolite has acidic pore activity and wherein the zeolite surface is rendered substantially inactive for acidic reactions. The zeolite surface can be neutralized by a bulky pyridine compound having an effective cross-section larger than the zeolite pore. The preferred deactivating agent is 2,4,6-collidine, which may be applied to the zeolite as a pretreatment or added with olefin feed in a continuous process. The olefin oligomers may be used as alkylating agents to prepare biodegradable alkylbenzenes and alkylphenylsulfonates. A preferred catalyst for this alkylation reaction is dealuminized mordenite.Type: GrantFiled: January 4, 1988Date of Patent: September 26, 1989Assignee: Mobil Oil CorporationInventors: Nancy M. Page, Lewis B. Young, David A. Blain
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Patent number: 4855527Abstract: A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure which comprises contacting the lower olefin under oligomerization/polymerization conditions with siliceous acidic ZSM-23 zeolite having Bronsted acid activity; wherein the zeolite has acidic pore activity and wherein the zeolite surface is rendered substantially inactive for acidic reactions. The zeolite surface can be neutralized by a bulky pyridine compound having an effective cross-section larger than the zeolite pore. The preferred deactivating agent is 2,4,6-collidine, which may be applied to the zeolite as a pretreatment or added with olefin feed in a continuous process.Type: GrantFiled: January 13, 1989Date of Patent: August 8, 1989Assignee: Mobil Oil CorporationInventors: Nancy M. Page, Lewis B. Young
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Patent number: 4461729Abstract: A method for preparation of secondary alcohol mixtures by selective reaction of an olefin or olefin mixture and a carboxylic acid compound in the presence of a particular type of shape selective zeolite catalyst. The reaction selectively produces .alpha.-methylalkyl carboxylate enriched ester product which, upon subsequent hydrolysis, yields the desired 2-alcohol enriched secondary alcohol product.Type: GrantFiled: August 23, 1982Date of Patent: July 24, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4461730Abstract: A method for the preparation of secondary alcohol mixtures by selective reaction of an olefin or olefin mixture and a carboxylic acid compound in the presence of zeolite mordenite. The reaction selectively produces .alpha.-methylalkyl carboxylate enriched ester product which, upon subsequent hydrolysis, yields the desired secondary alcohol product enriched in alcohols having hydroxy functionality at the 2-position.Type: GrantFiled: August 23, 1982Date of Patent: July 24, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4456780Abstract: There is disclosed a method for decreasing catalyst coking and extending the usable catalyst life by pre-treatment of the catalyst with steam and/or a phosphorus-containing compound. Catalysts benefiting from such pre-treatment comprise crystalline zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index, as herein defined, within the approximate range of 1 to 12.Type: GrantFiled: July 20, 1983Date of Patent: June 26, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4448983Abstract: A process for preparation of alkyl carboxylate mixtures enriched in alpha-methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a particular type of zeolite catalyst. The zeolites are characterized by a silica to alumina mole ratio of at least 12 and a constraint index of 1 to 12. Zeolites ZSM-5 and ZSM-12 are particularly preferred.Type: GrantFiled: September 30, 1982Date of Patent: May 15, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4447642Abstract: A process for preparation of alkyl carboxylate mixtures enriched in alpha-methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a mordenite catalyst.Type: GrantFiled: September 30, 1982Date of Patent: May 8, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4433189Abstract: A process for converting a methanol feed to light olefins over a zeolite catalyst comprising at least some crystalline aluminosilicate zeolitic material having a Constraint Index of about 1 to 12 and a silica/alumina mole ratio of at least about 12, e.g., ZSM-5, in the presence of diluent which provides O.sub.2 -containing gas, e.g. air, in the reaction zone under methanol conversion conditions. By using such a ZSM-5 type zeolite catalyst and an oxygen-providing diluent, methanol can be converted to an olefin-containing hydrocarbon product enriched in C.sub.2 to C.sub.4 olefins such as ethylene.Type: GrantFiled: June 9, 1983Date of Patent: February 21, 1984Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4423266Abstract: There is disclosed a method for decreasing catalyst coking and extending the usable catalyst life by pre-treatment of the catalyst with steam and/or a phosphorus-containing compound. Catalysts benefiting from such pre-treatment comprise crystalline zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index, as herein defined, within the approximate range of 1 to 12.Type: GrantFiled: July 30, 1982Date of Patent: December 27, 1983Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4405818Abstract: Organic compound mixtures enriched in meta-isopropylphenol are prepared by alkylating phenol with isopropanol or propylene to form mixtures of isopropylphenol isomers and by subsequently selectively cracking the para-isopropylphenol isomer from such a mixture over a ZSM-5 type cracking catalyst. Concentration of the para-isomer is thereby selectively reduced relative to the meta-isomer and the meta-isopropylphenol isomer can be further separated from the remaining mixture by fractionation procedures.Type: GrantFiled: September 30, 1981Date of Patent: September 20, 1983Assignee: Mobil Oil CorporationInventors: George E. Stead, Lewis B. Young
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Patent number: 4375573Abstract: Para-Disubstituted aromatics are produced in the presence of a catalyst comprising zeolite ZSM-48. Selective cracking of para-isomers may also be accomplished to produce mixtures rich in meta-isomers.Type: GrantFiled: January 27, 1982Date of Patent: March 1, 1983Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4371714Abstract: A process for the selective alkylation of phenol or its alkyl ethers, in the presence of a particular type of zeolite catalyst, to produce a product rich in 4-alkyl phenyl alkyl ethers (e.g. 4-methylanisole). The zeolite is characterized by a Constraint Index of 1 to 12 and a silica to alumina mole ratio of at least 12, and may optionally contain a minor amount of a difficultly reducible oxide.Type: GrantFiled: December 30, 1980Date of Patent: February 1, 1983Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4365083Abstract: A method for preparation of alkyl carboxylate compounds, and especially methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a mordenite catalyst.Type: GrantFiled: December 19, 1980Date of Patent: December 21, 1982Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4365084Abstract: A method for preparation of alkyl carboxylate compounds, and especially .alpha.-methylalkyl carboxylate compounds, by reaction of an olefin and a carboxylic acid compound in the presence of a particular type of zeolite catalyst. The zeolites are characterized by a silica to alumina mole ratio of at least 12 and a constraint index of 1 to 12. Zeolites ZSM-5 and ZSM-12 are particularly preferred.Type: GrantFiled: December 19, 1980Date of Patent: December 21, 1982Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4356338Abstract: There is disclosed a method for decreasing catalyst coking and extending the usable catalyst life by pre-treatment of the catalyst with steam and/or a phosphorus-containing compound. Catalysts benefiting from such pre-treatment comprise crystalline zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index, as herein defined, within the approximate range of 1 to 12.Type: GrantFiled: October 8, 1980Date of Patent: October 26, 1982Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4329509Abstract: A process for the co-production of 2-alkanones having at least five carbon atoms and phenol or a substituted phenol. In the first step, benzene or a substituted benzene is alkylated with an alkyl moiety of at least five carbon atoms to selectively produce the 2-arylalkane isomer. Subsequent oxidation to the hydroperoxide and acid cleavage thereof yields the desired product. The alkylation step is carried out in the presence of a novel class of selective crystalline zeolite materials having pore openings with a major dimension of six to seven angstroms.Type: GrantFiled: January 22, 1981Date of Patent: May 11, 1982Assignee: Mobil Oil CorporationInventors: Werner O. Haag, Lewis B. Young
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Patent number: 4301316Abstract: A process for the selective alkylation of substituted or unsubstituted benzene compounds with relatively long chain length alkylating agents to produce phenylalkanes having an improved yield of the more external phenyl isomers. The reaction is carried out in the presence of crystalline zeolite catalysts, such as ZSM-4, ZSM-20, ZSM-38, mazzite, Linde Type L and zeolite Beta.Type: GrantFiled: November 20, 1979Date of Patent: November 17, 1981Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4301317Abstract: A process for the selective alkylation of substituted or unsubstituted benzene compounds with relatively long chain length alkylating agents to produce phenylalkanes having an improved yield of the 2-phenylkane isomer. The reaction is carried out in the presence of crystalline zeolite catalysts characterized by channels or networks of pores having openings with a major dimension of 6-7 angstroms.Type: GrantFiled: November 20, 1979Date of Patent: November 17, 1981Assignee: Mobil Oil CorporationInventor: Lewis B. Young