SU412177A1 - - Google Patents
Info
- Publication number
- SU412177A1 SU412177A1 SU1222980A SU1222980A SU412177A1 SU 412177 A1 SU412177 A1 SU 412177A1 SU 1222980 A SU1222980 A SU 1222980A SU 1222980 A SU1222980 A SU 1222980A SU 412177 A1 SU412177 A1 SU 412177A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- cyclohexene
- dicarboxylic acid
- anhydride
- liquid
- anhydrides
- Prior art date
Links
Landscapes
- Epoxy Resins (AREA)
Description
1one
Изобретение может использоватьс - дл отверждени эпоксидных смол.The invention can be used to cure epoxy resins.
При конденсации малеинового ангидрида с такими диенами, как дивннил или изопрен, получаютс кристаллические продукты - ангидрид г ис-4-циклогексен-1,2-дикарбоновой кислоты- т. пл. 104°С, и ангидрид 1{ис-4-метил4-циклогексен-1 ,2-дикарбоновой кислоты - т. пл. 64°С.By condensation of maleic anhydride with dienes such as divnyl or isoprene, crystalline products are obtained — anhydride of g is-4-cyclohexene-1,2-dicarboxylic acid, m.p. 104 ° C, and 1 {is-4-methyl4-cyclohexene-1, 2-dicarboxylic acid anhydride - t. Pl. 64 ° C.
Вместе с тем дл р да важных технических областей (отверждени эпоксидных смол и др.) требуютс ангидриды жидкие при обыкновенных услови х.However, for a number of important technical areas (curing epoxy resins, etc.), liquid anhydrides are required under ordinary conditions.
Одним из путей получени жидких ангидридов вл етс способ изомеризации кристаллических ангидридов г{мс-циклогексен-1,2 дикарбоновых кислот, при этом получаетс жидка смесь, состо ща из изомеров, которые отличаютс друг от друга положеннем двойной св зи в цикле.One of the ways to produce liquid anhydrides is the method of isomerization of crystalline anhydrides r {ms-cyclohexene-1,2 dicarboxylic acids, thus a liquid mixture is obtained consisting of isomers that differ from each other by a double bond in the loop.
Так, нрн нагревании ангидрида цыс-4-циклогексен-1 ,2 дикарбоновой кислоты с 1% Р2О5 при 180-200°С имеет место реакци перемещени двойных св зейThus, the nrn heating of cis-4-cyclohexene-1 anhydride, 2 dicarboxylic acid with 1% P2O5 at 180-200 ° C takes place the reaction of double bond transfer
При этом получают смесь изомеров, жидкую при комнатной темнературе.You get a mixture of isomers, liquid at room temperaure.
Аналогично проходит изомеризаци аигидрида г г с-4-метил-4-циклогексен-1,2-дикарбоновой кислотыIsomerization of the hydride of g of g-4-methyl-4-cyclohexene-1,2-dicarboxylic acid proceeds in a similar way.
СИ.SI.
н.n
оabout
о CHi оo CHi o
иand
иX XVandX XV
Сх WCxCx WCx
с.with.
с IJcwith IJc
С WITH
J8J8
IIII
оabout
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1222980A SU412177A1 (en) | 1968-03-01 | 1968-03-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1222980A SU412177A1 (en) | 1968-03-01 | 1968-03-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU412177A1 true SU412177A1 (en) | 1974-01-25 |
Family
ID=20442031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1222980A SU412177A1 (en) | 1968-03-01 | 1968-03-01 |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU412177A1 (en) |
-
1968
- 1968-03-01 SU SU1222980A patent/SU412177A1/ru active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1018179A (en) | P-v-fe catalyst modified with chromium for production of maleic anhydride from saturated aliphatic hydrocarbons | |
| AU470043B2 (en) | Purification of carboxylic acids | |
| AU470044B2 (en) | Purification of carboxylic acids | |
| BE792879A (en) | MALEIC ANHYDRIDE ISOLATION PROCESS | |
| CS190433B2 (en) | Method of producing anhydride of maleic acid | |
| BE811571A (en) | PROCESS FOR THE PREPARATION OF CARBOXYLIC ACIDS OR CARBOXYLIC DIACID ANHYDRIDES | |
| CA926417A (en) | Process for preparation of naphthalene monocarboxylic acid or naphthalene dicarboxylic acid | |
| GB1108720A (en) | Process for the manufacture of cyclic ester anhydrides of ª-hydroxy-carboxylic acids | |
| SU412177A1 (en) | ||
| CA961034A (en) | Process for the industrial preparation of desoxyribonucleic acids of high molecular weight | |
| CA925243A (en) | Adducts, containing epoxide groups, from polyglycidyl compounds and acid polyesters of aliphatic-cycloaliphatic dicarboxylic acids, process for their manufacture and use | |
| AU472581B2 (en) | Distallation of readily polymerizable ethylene unsaturated compounds | |
| ES415164A1 (en) | Stoving lacquers which can be diluted with water | |
| NO143171C (en) | PROCEDURE FOR THE PREPARATION OF MALEIC ACID ANHYDRIDE | |
| ZA74918B (en) | Process for producing anhydrides of aromatic polycarboxylic acids | |
| GB1406050A (en) | Purification of aromatic polycarboxylic acids | |
| GB1260458A (en) | Epoxy resin curing agent | |
| BE792008A (en) | PROCESS FOR THE PREPARATION OF ANHYDRIDE AND / OR MALEIC ACID | |
| CA985703A (en) | Process for preparation of straight chain alkane dicarboxylic acids | |
| CA983518A (en) | Process for the preparation of terephthalic acid | |
| GB1150758A (en) | New Heat-Curable Mixtures of Epoxy Resins and Isomerized Polycarboxylic Acid Anhydrides | |
| US4048197A (en) | 2,3,3',4'-Biphenyltetracarboxylic acid dianhydride | |
| CA882776A (en) | Adducts, containing epoxide groups, from polyepoxide compounds and acid polyesters of aliphatic-cycloaliphatic dicarboxylic acids | |
| AU437308B2 (en) | New adducts, containing epoxide groups, from polyepoxide compounds and acid polyesters of aliphatic-cycloaliphatic dicarboxylic acids, processes for their manufacture and use | |
| IT949722B (en) | PROCEDURE FOR THE PRODUCTION OF CARBOXYLIC ACIDS, DICARBOXIC ACIDS OR THEIR ANHYDRIDES |