Furfuryl alcohol mixtures for use as cleaning agents

Details Furfuryl alcohol mixtures for use as cleaning agents Furfuryl alcohol mixtures for use as cleaning agents

C - Chemistry, Metallurgy

23

G

149/28

C23G 5/036 (2006.01) C11D 3/43 (2006.01) C11D 7/50 (2006.01) C23G 1/24 (2006.01) C23G 5/032 (2006.01) H05K 3/26 (2006.01)

Patent

CA 2026335

The present invention offers an alternative to the chlorofluorocarbons which have been used in the cleaning industry. In particular, the present invention uses a solution having tetrahydrofurfuryl alcohol (THFA) and an activator. As activators, compounds of the formula (See formula I) wherein R1, R2 and R3 are independently hydrogen, C1-C7 alkyl, C5-C6 cycloalkyl, furanyl which can be substituted by C1-C7 alkyl, tetrahydrofuranyl which can be substituted by C1-C7 alkyl, pyrrolyl, pyrrolidinyl, benzyl which can be substituted by C1-C7 alkyl, phenyl which can be substituted by C1-C7 alkyl, C1-C7 alkenyl, C1-C7 alkynl, furfuryl which can be substituted by C1-C7 alkyl, or tetrahydrofurfuryl which can be substituted by C1-C7 alkyl, wherein R1, R2 and R3 can be substituted by at least one hydroxy group, provided that R1, R2 and R3 are not simultaneously hydrogen, or Image wherein R4 is hydrogen, C1-C6 alkyl, C5-C6 cycloalkyl, furanyl which can be substituted by C1-C6 alkyl, tetrahydrofuranyl which can be substituted by C1-C6 alkyl, pyrrolyl, pyrrolidinyl, or benzyl which can be substituted by C1-C6 alkyl, R5 is C1-C6 alkyl, C5-C6 cycloalkyl, furanyl which can be substituted by C1-C6 alkyl, tetrahydrofuranyl which can be substituted by C1-C6 alkyl, furfuryl which can be substituted by C1-C6 alkyl, tetrahydrofurfuryl which can be substituted by C1-C6 alkyl, pyrrolyl, pyrrolidinyl, benzyl which can be substituted by C1-C6 alkyl, or the group -(C)a -O-(C)b -O-(C)b -OH 20 wherein a is from 1 to 3 and b is from 1 to 4, can be used. In addition to the activators (I) or (II), the present invention can also include as activators cyclic or non- cyclic diamines, pyrrolidone, which can be substituted by C1-C6 alkyl or C1-C6 alkenyl, or butyrolactone.

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