摘要:
The invention relates to an improved process for making monomeric triglycidyl compounds, wherein the triglycidyl compounds include N, O-triglycidyl compounds containing at least one primary aromatic amine and one phenolic functional group attached to the same or a different aromatic ring. The methods of the present invention result in the production of N, O-triglycidyl compounds, such as those of formula I and II. The improved process is energy efficient, environment friendly, and results in increased yields of product. The methods of the present invention can be performed in the absence of protic organic co-solvents during the reaction of an epihalohydrin with an aminophenol, such as compounds of formula II and IV, which provides an intermediate halohydrin compound. The methods of the present invention may also be performed in the absence of a phase transfer catalyst.
摘要:
The invention relates to an improved manufacturing process for the preparation of high 2, 4′-dihydroxydiphenylmethane, by a process involving reaction of phenol and formaldehyde, in the presence of an inorganic polyprotic acid. According to this process, the reaction conditions are selected to favour a high yield of dihydroxydiphenylmethane, with a relatively high concentration of the 2,4′-isomer, by using a relatively low molar excess of phenol than conventional methods.
摘要:
The present disclosure relates to a modified epoxy resin having the formula (I): wherein R is R1, R2 or a combination of R1 and R2; R1 and R2 are independently alkyl group having 1 to 32 C atoms, branched alkyl group having 1 to 32 C atoms, Cyclo-aliphatic group, substituted cycloaliphatic group, aromatic group, substituted aromatic group, biaryl or alkyl substituted biaryl group, methyl bridged aromatic group, cycloaliphatic-aromatic group or Ar—Z—Ar group; X and Y are independently O, —C(O)O—, or an amine group. Z is dicyclopentadiene; R3 and R4 are independently either H, alkyl group, branched alkyl group, alkoxy group, substituted biaryl group or methyl bridged aromatic group; R4 and R3 optionally forming a fused aromatic ring or a fused hetero aromatic ring; n is 0 to 1 with n=0>75%; and N is 1-20.
摘要:
The invention relates to an improved process for making monomeric triglycidyl compounds, wherein the triglycidyl compounds include N, O-triglycidyl compounds containing at least one primary aromatic amine and one phenolic functional group attached to the same or a different aromatic ring. The methods of the present invention result in the production of N, O-triglycidyl compounds, such as those of formula I and II. The improved process is energy efficient, environment friendly, and results in increased yields of product. The methods of the present invention can be performed in the absence of protic organic co-solvents during the reaction of an epihalohydrin with an aminophenol, such as compounds of formula II and IV, which provides an intermediate halohydrin compound. The methods of the present invention may also be performed in the absence of a phase transfer catalyst.
摘要:
The present disclosure relates to a modified epoxy resin having the formula (I):
wherein R is R1, R2 or a combination of R1 and R2; R1 and R2 are independently alkylene group having 1 to 32 C atoms, branched alkylene group having 1 to 32 C atoms, cyclo-aliphatic group, substituted cycloaliphatic group, aromatic group, substituted aromatic group, biarylene or alkyl substituted biaryl group, cycloaliphatic-aromatic group or arylene-Z-arylene group; X and Y are independently O, —C(O)O—, or an amine group; Z is dicyclopentadiene; R3 and R4 are independently either H, alkyl group, branched alkyl group, alkoxy group, or substituted biaryl group; R4 and R3 optionally forming a fused aromatic ring or a fused hetero aromatic ring; n is 0 to 1 wherein concentration of n=0 monomer is greater than 75%; and N is 1-20.
摘要:
The invention relates to an improved manufacturing process for the preparation of high 2,4′-dihydroxydiphenylmethane, by a process involving reaction of phenol and formaldehyde, in the presence of an inorganic polyprotic acid. According to this process, the reaction conditions are selected to favour a high yield of dihydroxydiphenylmethane, with a relatively high concentration of the 2,4′-isomer, by using a relatively low molar excess of phenol than conventional methods.