Recyclable and reworkable epoxy resins
AssigneeAditya Birla Chemicals (Thailand) Ltd. (Epoxy Division)
InventorsChandan Kumar Singh, Pradip Kumar Dubey, Weerawat Sripet, Kanyarat Sittipummongkol
Life of this patent
Estimating the term…
Abstract
An epoxy resin component(s) for a recyclable epoxy resin system is disclosed. The recyclable epoxy resin system comprises an epoxy resin component having a structural Formula I or an epoxy resin component having a structural Formula II and a curing agent. A process(es) for preparing the epoxy resin component having the structural Formula I and the epoxy resin system having the structural Formula II is also disclosed.
Claims11
A process for preparing an epoxy resin component having a structural Formula I for an epoxy resin system, the process comprising:
- epoxidizing a compound having a structural Formula VI with a percarboxylic acid compound or hydrogen peroxide to obtain an epoxidized alcohol;
- and
- reacting the epoxidized alcohol with a compound having a structural Formula III or a compound selected from a group consisting of 2-methoxy propene, 2-2 di methoxy propane, 2 ethoxy propene, 2-2 di ethoxy propane, and 2-2 di propoxy propane in the presence of an acidic catalyst to obtain the epoxy resin component having the structural Formula I,
- wherein
- the compound having the structural Formula VI is represented by:
- wherein R1, R2, and R3, are hydrogen,
- R4 is any one of:
- the compound having the structural Formula III is represented by:
- wherein
- R1 and R2 are independently hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, cycloalkynyl, aryl, heterocyclic, heterocycloalkyl, cycloalkenyl, heteroaryl, alkoxy, alkoxyaryl, alkoxy alkyl, or aryloxy, and
- the epoxy resin component having the structural Formula I is:
- wherein
- m=0, 1 or 2 such that
- if m=0 then n=4,
- if m=1 then n=3, or
- if m=2 then n=2,
- A is carbon,
- D is oxygen,
- X is oxygen, and
- B is independently alkylene-arylene, arylene-alkylene-arylene, alkylene, or alkylene-cycloalkylene.
A process for preparing an epoxy resin component of Formula I, said process comprising the steps of:
- a. epoxidizing 4-(2-propen-1-yloxy)-benzenemethanol with a percarboxylic acid compound or hydrogen peroxide to obtain 4-(2-Oxiranylmethoxyl)-benzenemethanol;
- and
- b. reacting the obtained 4-(2-Oxiranylmethoxyl)-benzenemethanol with 2-methoxy propene in the presence of an acid catalyst to obtain the epoxy resin component of Formula I,
- wherein the epoxy resin component of formula I is represented by:
Dependencies are inferred from the claim text.