Catalytic curing agent for resins and method for making the same

Details Catalytic curing agent for resins and method for making the same Catalytic curing agent for resins and method for making the same

1998-09-16

2000-06-06

Warzel, Mark L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523102, 264 83, 264219, 264225, 26433122, B22C 122

Patent

active

060719850

ABSTRACT:
Dimethylpropylamine is provided. This new amine surprisingly has a significantly less offensive odor and is considerably less prone to be impregnated in or coat the skin and clothing than are other amines which are utilized to catalyze phenol formaldehyde and polyisocyanate resins during the production of sand cores in the "Cold Box Process". Dimethylpropylamine also cures phenol formaldehyde and polyisocyanate resins at a surprisingly rapid rate. Dimethylpropylamine is produced utilizing a reaction mixture which includes Dimethylamine and Propyl alcohol such that the molar ratio of Dimethylarine to Propyl alcohol is in the range of 0.07 to 0.5.

REFERENCES:
patent: 3429848 (1969-02-01), Robins
patent: 3624122 (1971-11-01), Kamal et al.
patent: 5451446 (1995-09-01), Kincaid et al.

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