Title:
改良された光学特性を有するフェノールノボラック樹脂
Document Type and Number:
Japanese Patent JP4348013
Kind Code:
B2
Abstract:
The specification discloses a method for the manufacture of a fluorescent polyphenolic product with high UV absorbance, its subsequent epoxidation as well as polyphenolic products and epoxidized derivatives and compositions thereof. The polyphenolic products are prepared by heating glyoxal at a temperature of about 80 DEG C. to about 100 DEG C. with a molar excess of a phenol in the presence of an acidic catalyst which is eliminated from the reaction mixture at a temperature below about 170 DEG C. The total mole ratio of glyoxal to phenol charged to the reaction mixture is about 0.15 to 0.22 moles of glyoxal for each mole of phenol. The glyoxal is added continuously or by stepwise additions to the phenol so as to keep the aldehyde units in the reaction mixture to less than about 70% of the aldehyde units in the total quantity of glyoxal to be charged for making the polyphenol. Water is distilled stepwise or continuously from the reaction mixture. The catalyst is removed from the reaction mixture by further distilling the reaction mixture, generally at higher temperatures. After removal of the catalyst, unreacted phenol is removed by distillation and the reaction mixture is heated at a temperature of about 175 DEG C. to 200 DEG C. for about 0.25 hours to about 3 hours to produce a polyphenolic reaction product having high fluorescence, high UV absorbance and high solubility in organic solvents. The polyphenolic reaction product can be epoxidized by conventional means and such epoxy products used in the manufacture of laminates, coatings and adhesives.
Inventors:
Gerber, Arthur H
Application Number:
JP2000574150A
Publication Date:
October 21, 2009
Filing Date:
March 05, 1999
Export Citation:
Assignee:
Hexon Specialty Chemicals, Inc.
International Classes:
C08G8/00; C08G8/04; C08G14/04; C08G14/12; C08G59/08; C08G59/62; C08L61/06; C08L61/10; C08L61/14; C08L63/00; H05K1/02; H05K1/03; H05K3/28
Domestic Patent References:
| JP63223020A | ||||
| JP51075790A | ||||
| JP54028392A | ||||
| JP7173089A | ||||
| JP5017548A | ||||
| JP10036467A |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Tatsuo Tomizu
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Tatsuo Tomizu
Previous Patent: 工具受容体において工具を締付け固定するための装置
Next Patent: METHOD AND DEVICE FOR MAGNETIC GREEN SHEET LAMINATION
Next Patent: METHOD AND DEVICE FOR MAGNETIC GREEN SHEET LAMINATION