Method of producing polyurethane-based cores and moulds accordin

Details Method of producing polyurethane-based cores and moulds accordin Method of producing polyurethane-based cores and moulds accordin

1973-09-13

1976-01-20

Lee:, Lester

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 47CB, 260 775AM, 260 775AQ, C08G 1828

Patent

active

039337278

ABSTRACT:
A method is provided for producing polyurethane-based cores and moulds, using a mixture of particle-formed material such as sand, a bonding agent containing a polyisocyanate compund and a polyhydroxy compound and if necessary a solvent, after which the mixture is shaped to a desired form and hardened by means of a catalyst, wherein the polyhydroxyl compound consists of one or more aliphatic or aromatic polyethers, together with a hydroxyl compound for initiating the catalyzation, which hydroxy compound consists of an aromatic compound with at least two OH groups which directly, or via a methalene group, are linked to a carbon atom in the aromatic nucleus.

REFERENCES:
patent: 3441523 (1969-04-01), Dwyer et al.
patent: 3450653 (1969-06-01), McClellan
patent: 3538040 (1970-11-01), Grazen
patent: 3725355 (1973-04-01), Parrish et al.
patent: 3745139 (1973-07-01), Kachur et al.

Affiliated with

Also associated with

Rating

Method of producing polyurethane-based cores and moulds accordin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing polyurethane-based cores and moulds accordin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing polyurethane-based cores and moulds accordin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1696320