Quote:
Originally Posted by jr_tech
If the bonding material on a particular tube is a type of polyester resin (I believe that some were ... PPG 5252 or something like that), methylene chloride will do the job. Very nasty, however. 
jr |
Dow Chemical's formula is in Patent 3007833:
33 parts by weight diglycidyl etherr of bisphenol A, 67 parts diglycidyl ether of polyoxypropylene glycol having a molecular weight of 400 and 5.5 parts of monoethanolamine and 1 part of diethylenetriamine.
What that means, I dunno. The patent is for the use of a Saran wrap band around the tube and safety plate while filling the gap with the above mix.
US Patent 3265234 from Union Carbide lists a number of other chemicals that were used to bond the safety plates - about 4 or 5 formulations are compared.
I guess not all CRT's used the same bonding materials....
Cheers,