UST921002I4 - Defensive publication - Google Patents

Defensive publication Download PDF

Info

Publication number
UST921002I4
UST921002I4 US921002DH UST921002I4 US T921002 I4 UST921002 I4 US T921002I4 US 921002D H US921002D H US 921002DH US T921002 I4 UST921002 I4 US T921002I4
Authority
US
United States
Prior art keywords
hydroxide
dimethyl sulfate
butylhydroquinone
water
reaction system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB2961472A external-priority patent/GB1366441A/en
Application filed filed Critical
Application granted granted Critical
Publication of UST921002I4 publication Critical patent/UST921002I4/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCESS FOR PREPARING BUTYLATED HYDROXYANISOLE (BHA) OF HIGH 3-ISOMER CONTENT, COMPRISING PROVIDING AN AGITATED REACTION SYSTEM OF T-BUTYLHYDROQUINONE AND DIMETHYL SULFATE IN AN ORGANIC SOLVENT AND A LIMITED AMOUNT OF WATER, AND SLOWLY ADDING THERETO AQUEOUS SODIUM HYDROXIDE OR OTHER HYDROXIDE OVER A PERIOD OF FROM ABOUT 1 TO ABOUT 3.5 HOURS WHILE MAINTAINING THE SYSTEM AT A RELATIVELY LOW TEMPERATURE OF FROM ABOUT 30 TO 50*C., THE TOTAL AMOUNT OF WATER IN THE REACTION SYSTEM BEING FROM ABOUT 2.5 TO ABOUT 5 PARTS PER 10 PARTS OF DIMETHYL SULFATE, THE AMOUNT OF DIMETHYL SULFATE BEING FROM ABOUT 1 TO ABOUT 3 MOLES PER MOLE OF HYDROXIDE, AND THE TI-BUTYLHYDROQUINONE BEING IN SLIGHT EXCESS OF FROM ABOUT 0.1 TO ABOUT 0.5 MOLE PER MOLE OF HYDROXIDE.

Description

DEFENSIVE PUBLICATlON UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The flies of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oiiice makes no assertion as to the novelty ot the disclosed subject matter.
PUBLISHED APRIL 2, 1974 T921,002 PROCESS FOR PRODUCING BUTYLATED HYDROXYANISOLE AND HIGH S-ISOMER CONTENT James Michael Coe, 2152 Swannnnoa Ave., and Charles Edward Osborne, 1540 Belmeade Drive, both of Kingsport, Tenn. 37664 Continuation of application Ser. No. 156,131, June 23,
1971. This application Dec. 22, 1972, Ser. No. 317,560 Claims priority, application Great Britain, June 23, 1972,
29,614/72 Int. Cl. C07c 43/20 U.S. Cl. 260-613 No Drawing. 7 Pages Specification Process for preparing butylated hydroxyanisole (BHA) of high 3-isomer content, comprising providing an agitated reaction system of t-butylhydroquinone and dimethyl sulfate in an organic solvent and a limited amount of water, and slowly adding thereto aqueous sodium hydroxide or other hydroxide over a period of from about 1 to about 3.5 hours while maintaining the system at a relatively low temperature of from about 30 to 50 C., the total amount of water in the reaction system being from about 2.5 to about 5 parts per 10 parts of dimethyl sulfate, the amount of dimethyl sulfate being from about 1 to about 3 moles per mole of hydroxide, and the t-butylhydroquinone being in slight excess of from about 0.1 to about 0.5 mole per mole of hydroxide.
US921002D 1972-06-23 1972-12-22 Defensive publication Pending UST921002I4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2961472A GB1366441A (en) 1971-06-23 1972-06-23 Preparation of antioxidant
US31756072A 1972-12-22 1972-12-22

Publications (1)

Publication Number Publication Date
UST921002I4 true UST921002I4 (en) 1974-04-02

Family

ID=26259995

Family Applications (1)

Application Number Title Priority Date Filing Date
US921002D Pending UST921002I4 (en) 1972-06-23 1972-12-22 Defensive publication

Country Status (1)

Country Link
US (1) UST921002I4 (en)

Similar Documents

Publication Publication Date Title
DE734743C (en) Process for the production of polyamide-like compounds
KR100209389B1 (en) Basic calcium aluminum hydroxy phosphites, a process for their production and their use
DE1175874B (en) Stabilization of vinyl chloride polymers
DE1809484C3 (en) Ether of 2,4-dihydroxybenzophenone. and their use as UV stabilizers
DE1593200A1 (en) Process for the production of half-esters
UST921002I4 (en) Defensive publication
DE2425983B2 (en) SULPHONIC ACID SALT OF ACYLCHOLINES, THE PROCESS FOR THEIR MANUFACTURING AND THE PHARMACEUTICAL COMPOSITION THEREOF
US2163639A (en) Composition of matter produced from polyhydric phenols and alkyl amines
DE1745919C3 (en) Process for the production of polyurethanes
DE3008458C2 (en) Cross-linked acrylate-acetoacetamide polymers and their use in a wearing layer of a thermoplastic floor covering
DE1471677A1 (en) Heat developable copy sheet
DE1593110A1 (en) Ribofuranoses and processes for their preparation
DE1520079B2 (en) PROCESS FOR MANUFACTURING HIGH POLYMERIC POLYMETHYLENE TEREPHTHALATE
UST883022I4 (en) Defensive publication
DE69010452T2 (en) KLATHRATE COMPOUND OF RING-SUBSTITUTED SALICYL ACID SALT.
DE904471C (en) Process for the production of polyurethanes
DE2109624A1 (en) New aromatic bis-acrylic compounds in particular for photosensitive compositions and relief plates and processes for their production
DE2209319A1 (en) Photosensitive composition and a method for forming an image using the same
DE2362694A1 (en) PROCESS FOR THE PRODUCTION OF PHLOROGLUCIN, ITS MONOMETHYLAETHER OR DIHYDROXYBENZENE
DE4326918C1 (en) Process for the preparation of dialkyl 2-haloethylmalonates
US2132353A (en) Nitroalcohol
US1743630A (en) Methylene-disalicylic acid derivative
Sowden et al. The Addition of Amines to Carbohydrate α-Nitroolefins
DE908536C (en) Process for the production of resinous condensation products
DE916980C (en) Process for the production of higher molecular weight products from compounds containing hydroxyl and cyano groups on different carbon atoms