Tar urethane composition

Claim 2

A urethane composition comprising a. as a base compound at least one member selected from the group consisting of (1) a polyol selected from a polyether, a polyester, the reaction product of a phenolic compound and formaldehyde, and castor oil, and (2) an isocyanate-reactive tar obtained by reacting a tar occurring as a by-product in the synthesis of phenols through hydroperoxides or a mixture of said tar with a phenol having the general formula ##STR2## wherein R is an alkyl group containing 1 to 8 carbon atoms, m is an integer of 0 to 2, and n is 1 or 2, with formaldehyde in the presence of a basic catalyst, and

Claim 3

b. as a curing agent, a liquid toluene diisocyanate tar product, said product being obtained by mixing a toluene diisocyanate tar produced as a by-product in the preparation of toluene diisocyanate, said tar being a solid having a softening point of higher than 150° C and being in a substantially anhydrous condition, in an aromatic solvent having a boiling point at atmospheric pressure of at least 200° C such that the amount of toluene diisocyanate tar is present in a concentration of about 10 to 40% by weight of the solvent mixture.

Claim 4

b. as a curing agent, a liquid toluene diisocyanate tar product, said product being obtained by mixing a toluene diisocyanate tar produced as a by-product in the preparation of toluene diisocyanate, said tar being a solid having a softening point of higher than 150° C and being in a substantially anhydrous condition, in an aromatic solvent having a boiling point at atmospheric pressure of at least 200° C such that the amount of toluene diisocyanate tar is present in a concentration of about 10 to 40% by weight of the solvent mixture.

Claim 5

The composition according to claim 1, wherein said mixing comprises pulverizing said toluene diisocyanate tar in a substantially anhydrous condition in said aromatic solvent at a temperature below the softening point of the toluene diisocyanate tar.

Claim 6

The composition according to claim 1, wherein said mixing comprises mixing said toluene diisocyanate tar with said aromatic solvent at a temperature above the softening point of the toluene diisocyanate tar to dissolve the tar therein.

Claim 7

The composition according to claim 1, wherein said mixing comprises mixing said toluene diisocyanate tar with said solvent at a temperature below the softening point of said tar and then maintaining the temperature of the mixture at a temperature above the softening point of said tar for at least 5 minutes.

Claim 8

The composition according to claim 1, wherein said aromatic solvent is creosote oil, anthracene oil, pitch oil, methyl naphthalene oil, crystal-freed naphthalene oil, absorbing oil, washing oil or hydrogenated cracked gasoline having a boiling point of about 200° C.

Claim 9

A process for coating a material which comprises mixing a. as a base component at least one member selected from the group consisting of (1) a polyol selected from a polyether, a polyester, the reaction product of a phenolic compound and formaldehyde, and castor oil, and (2) an isocyanate-reactive tar obtained by reacting a tar occurring as a by-product in the synthesis of phenols through hydroperoxides or a mixture of said tar with a phenol having the general formula ##STR3## wherein R is an alkyl group containing 1 to 8 carbon atoms, m is an integer of 0 to 2, and n is 1 or 2, with formaldehyde in the presence of a basic catalyst, and b. as a curing agent component, a liquid toluene diisocyanate tar product, said product being obtained by mixing a toluene diisocyanate tar produced as a by-product in the preparation of toluene diisocyanate, said tar being a solid having a softening point of higher than 150° C and being in a substantially anhydrous condition, in an aromatic solvent having a boiling point at atmospheric pressure of at least 200° C such that the amount of toluene diisocyanate tar is present in a concentration of about 10 to 40% by weight of the solvent mixture; and applying the resulting coating mixture to the material to be coated.

Claim 10

A process for coating a material which comprises mixing a. as a base component at least one member selected from the group consisting of (1) a polyol selected from a polyether, a polyester, the reaction product of a phenolic compound and formaldehyde, and castor oil, and (2) an isocyanate-reactive tar obtained by reacting a tar occurring as a by-product in the synthesis of phenols through hydroperoxides or a mixture of said tar with a phenol having the general formula ##STR3## wherein R is an alkyl group containing 1 to 8 carbon atoms, m is an integer of 0 to 2, and n is 1 or 2, with formaldehyde in the presence of a basic catalyst, and b. as a curing agent component, a liquid toluene diisocyanate tar product, said product being obtained by mixing a toluene diisocyanate tar produced as a by-product in the preparation of toluene diisocyanate, said tar being a solid having a softening point of higher than 150° C and being in a substantially anhydrous condition, in an aromatic solvent having a boiling point at atmospheric pressure of at least 200° C such that the amount of toluene diisocyanate tar is present in a concentration of about 10 to 40% by weight of the solvent mixture; and applying the resulting coating mixture to the material to be coated.

Claim 11

A material coated with the urethane composition according to claim 1.