C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/267
C08G 59/68 (2006.01) C07F 9/54 (2006.01) C08G 59/16 (2006.01) C08G 65/02 (2006.01) C08K 5/50 (2006.01)
Patent
CA 1059692
ABSTRACT It is known to react epoxy-group containing compounds with phenolic compounds or carboxylic acids or anhydrides. Such reactions must be catalysed. However, known catylsts have various drawbacks such as not promoting the type of polymerization most desired, promotion of colouration in the product and corrosivity. The present invention seeks to overcome these drawbacks by providing a process which comprises reacting a vicinal epoxy-group containing compound with a phenolic com- pound, a carboxylic acid, a carboxylic acid anhydride, or a mixture thereof in presence of a phosphonium salt corresponding to the formula Image wherein R1, R2, and R3 are hydrocarbyl or inertly-substituted hydro- carbyl radicals, each containing from 1 to 20 carbon atoms; R4 is hydrogen, benzyl, or C1-6 alkyl; and A? is a compatible neutralizing anion. The invention further provides a composition containing an epoxy resin and a phosphonium salt as defined above as a latent catalyst.
227513
Doorakian George A.
Duquette Lawrence G.
LandOfFree
Latent catalysts for promoting reaction of epoxides with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Latent catalysts for promoting reaction of epoxides with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Latent catalysts for promoting reaction of epoxides with... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-709394