Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1997-05-27
1998-12-29
Krass, Frederick
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
522170, 549560, 20415764, 20415765, 20415769, 20415782, 20415792, C07D30324, C08G 5924
Patent
active
058543708
ABSTRACT:
The invention provides a cis-stilbene type epoxy resin having lower melting point and lower viscosity than the trans-stilbene type epoxy resin hitherto known. The stilbene type epoxy resin has a cis-isomer content of essentially 100%, or in the alternative, at least about 10% with the rest being the trans-isomer, and is based on the following general formula (1): ##STR1## wherein R.sub.1 to R.sub.8 are independently an acyclic or cyclic alkyl group, a hydrogen atom, or a halogen atom. Production processes for these epoxy resins are also disclosed.
REFERENCES:
patent: 4462901 (1984-07-01), Dhein
patent: 5266405 (1993-11-01), Kirchmeyer
patent: 5460860 (1995-10-01), Hefner et al.
Griffith, James R., `Epoxy Resins Containing a Specific Vulnerablity`, ACS Symposium Series, vol. 114, pp. 259-262 (1979).
Osada & Katsumura, `Photomechanochemical Energy Conversion in a Polyamide Containing a Stilbene Structure in the Backbone`, Makromol. Chem., Rapid Commun. 2, pp. 441-415 (1981).
Chemical Abstracts 112:66404, "influence of Polar Solvents on Reaction Dynamices: Photoisomerization Studies of Dihydroxystilbene", Park et al.
Akiba Masatsugu
Hirano Yasuhiro
Naitoh Shigeki
Nakamura Hiroshi
Yokota Akira
Krass Frederick
Sumitomo Chemical Company Limited
LandOfFree
Epoxy resin stilbenes and process for producing the same by phot does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Epoxy resin stilbenes and process for producing the same by phot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Epoxy resin stilbenes and process for producing the same by phot will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1425766