Recyclable and reworkable polyol(s)
AssigneeAditya Birla Chemicals (Thailand) Ltd. (Epoxy Division)
InventorsPradip Kumar Dubey, Chandan Kumar Singh, Kanyarat Sittipummongkol, Weerawat Sripet
Life of this patent
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Abstract
Polyol component(s) for a recyclable polyurethane system is disclosed. The recyclable polyurethane system comprises a polyol component having a structural Formula (I), a polyol component having a structural Formula (II) or a polyol component having a structural Formula III and an isocyanate curing agent. A process(es) for preparing the polyol component having the structural Formula (I), the polyol component having the structural Formula (II) and the polyol component having the structural Formula (III) is also disclosed.
Claims8
A polyol component for a recyclable polyurethane system, the polyol component having a structural Formula (I) represented by:
- wherein
- if m=0 then n=4,
- if m=1 then n=3, and
- if m=2 then n=2,
- A is carbon,
- D is oxygen or
- R1 is independently hydrogen or alkyl and
- B is independently arylene, alkylene-arylene, or arylene-alkylene-arylene.
A process for preparing a polyol component having a structural Formula (I) for a polyurethane system, the process comprising:
- reacting a compound having a structural Formula (IV) with water in the presence of a base at an elevated temperature to obtain the polyol component having the structural Formula (I)
- wherein the compound having the structural Formula (IV) is represented by:
- wherein
- if m=0 then n=4,
- if m=1 then n=3, and
- if m=2 then n=2,
- A is carbon
- D is oxygen or
- X is oxygen,
- R1 is independently hydrogen or alkyl,
- B is independently arylene, alkylene-arylene, or arylene-alkylene-arylene,
- wherein the polyol component having the structural Formula (I) is:
- wherein
- if m=0 then n=4,
- if m=1 then n=3, and
- if m=2 then n=2,
- A is carbon,
- D is oxygen or
- R1 is independently hydrogen or alkyl, and
- B is independently arylene, alkylene-arylene, or arylene-alkylene-arylene.
A recyclable polyurethane system comprising a reaction product made by reacting:
- an isocyanate curing agent;
- with
- a polyol component having a structural Formula (I)
- wherein the polyol component having the structural Formula (I) is represented by:
- wherein
- if m=0 then n=4,
- if m=1 then n=3, and
- if m=2 then n=2,
- A is carbon,
- D is oxygen or
- R1 is independently hydrogen or alkyl,
- B is independently arylene, alkylene-arylene, or arylene-alkylene-arylene.
Dependencies are inferred from the claim text.