| Patent Number |
Title Of Patent |
Date Issued |
| 4814425 |
Novel alternate copolymers |
March 21, 1989 |
| Novel alternate copolymers consisting of isopentenyl compounds having a specific structure and certain types of unsaturated compounds are provided. |
| 4593145 |
Process for producing isoprene |
June 3, 1986 |
| A process for producing isoprene in good yield is provided. The process is characterized in that an alkyl tertiary butyl ether and a formaldehyde source are fed, together with water, into a acidic aqueous solution continuously or intermittently while maintaining the reaction pressure in |
| 4511751 |
Process for producing isoprene |
April 16, 1985 |
| A process for producing isoprene in good yield is provided. The process is characterized in that isobutene and/or tertiary butanol and a formaldehyde source are fed, together with water, into an acidic aqueous solution continuously or intermittently while maintaining the reaction pressur |
| 4381416 |
Process for producing isoprene |
April 26, 1983 |
| A process for producing isoprene, which comprises decomposing a mixture of at least two compounds represented by the general formula ##STR1## wherein (i) W and Y each represent a hydrogen atom, and X and Z are identical or different and each represent the group OR, (ii) W and X t |
| 4338478 |
Process for producing conjugated dienes |
July 6, 1982 |
| A process for producing a conjugated diene represented by the general formula ##STR1## wherein R.sub.3, R.sub.4 and R.sub.5 each represent a hydrogen atom, or any one of them represents a methyl group and the other two each represent a hydrogen atom,which comprises heating an alk |
| 4224252 |
Production of pinacolone |
September 23, 1980 |
| Disclosed are improved procedures for preparing pinacolone from compounds of general formula (I) ##STR1## wherein, either adjacent two of A, B, C and D form a single bond between them and the remaining two are hydrogen atoms, or both A and D are hydrogen atoms and one of B and C |
| 4122291 |
Method for the production of alken-2-ol-1 or of alken-2-ol-1 and alkanol-1 |
October 24, 1978 |
| Production of an alken-2-ol-1, or of an alken-2-ol-1 and an alkanol-1 from the corresponding alken-3-ol-1 is described. The above compound or compounds can be produced with good selectivity by converting an alken-3-ol-1 to the boric acid ester, and, then, contacting the ester with a |
| 4069261 |
Process for the production of polyhydric alcohols |
January 17, 1978 |
| Polyhydric alcohols can be produced in high selectivity from substituted 1,3-dioxanes containing at least one hydroxyalkyl group by heating, in the presence of water, said 1,3-dioxane or mixtures thereof in contact with boric acid, boric acid anhydride or a boron-containing compound capa |
| 3947504 |
Separation and recovery of 3-methyl-3-butene-1-ol |
March 30, 1976 |
| The 3-methyl-3-butene-1-ol contained in the oily mixture obtained in the production of isoprene by the reaction of isobutene and formaldehyde through the intermediate 4,4-dimethyl-1,3-dioxane can be isolated by adding boric acid to said mixture to form the boric acid ester of 3-methy |
