Polyurethane adhesive composition for carbon emission reduction and method of preparing same
AssigneesHyundai Motor Company, Kia Corporation
InventorsChae Hwan Hong, Jin Woo Choung
Life of this patent
Estimating the term…
Abstract
A polyurethane adhesive composition for carbon emission reduction, and a method of preparing same, includes polyether polyol containing a carbonate linkage, thus exhibiting a carbon emission reduction effect and good or desirable adhesion performance. The polyurethane adhesive composition is obtained by mixing a polyol mixture including polyether polyol containing a carbonate linkage and polytetramethylene glycol with an isocyanate in appropriate amounts and allowing the resulting mixture to react.
Claims13
A polyurethane adhesive composition, obtained by reacting:
- a polyol mixture comprising polyether polyol containing a carbonate linkage and polytetramethylene glycol;
- and
- an isocyanate,
- wherein the polyurethane adhesive composition comprises, based on 100 parts by weight of the polyol mixture, 20 to 60 parts by weight of the isocyanate and 0.5 to 5 parts by weight of a chain extender,
- wherein the polyol mixture comprises 60 to 70 wt % of the polyether polyol and 30 to 40 wt % of the polytetramethylene glycol,
- wherein the polyether polyol is prepared by copolymerizing as represented in the below chemical scheme
- wherein the polyether polyol has a weight average molecular weight (Mw) of 1500 to 2500 g/mol, and
- wherein the isocyanate comprises methylene diphenyl diisocyanate.
A method of preparing a polyurethane adhesive composition, the method comprising:
- preparing a polyol mixture comprising polyether polyol containing a carbonate linkage and polytetramethylene glycol;
- and
- obtaining a first reaction product by mixing the polyol mixture with an isocyanate, wherein the first reaction product is synthesized by mixing 100 parts by weight of the polyol mixture, 20 to 60 parts by weight of an isocyanate, and 0.5 to 5 parts by weight of a chain extender,
- wherein the polyol mixture comprises 60 to 70 wt % of the polyether polyol and 30 to 40 wt % of the polytetramethylene glycol,
- wherein the polyether polyol is prepared by copolymerizing as represented in the below chemical scheme
- wherein the polyether polyol has a weight average molecular weight (Mw) of 1500 to 2500 g/mol, and
- wherein the isocyanate comprises methylene diphenyl diisocyanate.
Dependencies are inferred from the claim text.