Aminoplast-anchored ultraviolet light stabilizers

Details Aminoplast-anchored ultraviolet light stabilizers Aminoplast-anchored ultraviolet light stabilizers

1995-05-23

1996-10-08

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 96, 528 97, 528 99, 528106, 528117, 528120, 528122, 528125, 528127, 528129, 528248, 528249, 528254, 528503, 528 88, 528 89, 525509, 525534, C08F28300, C08L 6100

Patent

active

055632246

ABSTRACT:
Novel aminoplast anchored UV stabilizers are provided. Compared to unanchored stabilizers, the anchored stabilizers disclosed herein have increased compatibility with coating resins and have reduced volatility due to higher molecular weights resulting from anchoring. A process for preparing the anchored stabilizers by the reaction of unanchored stabilizers with alkoxymethylated aminoplasts in a sulfuric acid medium is also provided. The unanchored stabilizers include 2-(2-hydroxyaryl)benzotriazoles, 2-hydroxybenzophenones, 2-(2-hydroxyaryl)-4,6-diaryl-1,3,5-triazines, salicylic acid derivatives, 2-hydroxyoxanilides, and blocked derivatives thereof as well as mixtures of two or more stabilizers. The aminoplasts include alkoxymethylated derivatives of glycolurils, melamines, and benzoguanamines.

REFERENCES:
patent: 3316208 (1967-04-01), Lee et al.
patent: 3399173 (1968-08-01), Heller et al.
patent: 3535318 (1970-10-01), Oppelt et al.
patent: 3595602 (1971-07-01), Oppelt et al.
patent: 4197392 (1980-04-01), Moore
patent: 4233430 (1980-11-01), Jacquet et al.
patent: 4319016 (1982-03-01), Kurobe et al.
patent: 4355071 (1982-10-01), Chang
patent: 4418000 (1983-11-01), Zannucci et al.
patent: 4418001 (1983-11-01), Zannucci et al.
patent: 4418002 (1983-11-01), Zannucci et al.
patent: 4612358 (1986-09-01), Besecke et al.
patent: 4652656 (1987-03-01), Besecke et al.
patent: 4913974 (1990-04-01), Moore et al.
"Facile Syntheses of 2, 4-Dihydroxybenzophenone Derivatives With Polymerizable Vinyl Groups," Journal of Polymer Sciences, Polymer Letters Edition, vol. 15, No. 11, pp. 675-677 (1977).
R. O. C. Norman, "Electrophilic Aromatic Substitution" in Principles of Organic Synthesis, 2nd ed., Chapman and Hall, London, pp. 370-377 (1978).
B. Jacquet, Cl. Mahieu and C. Papantoniou, "Polymers, Polymers Absorbeurs U.V. Pour La Protection du Corps Human," Caotoucs et Plastiques, No. 575, pp. 85-88 (Nov. 1977).
M. Minagawa, "New Developments in Polymer Stabilization," Polymer Degradation and Stability, vol. 25, pp. 121-141 (1989).
European Search Report for European Appln. 93121013.2, dated Apr. 29, 1994.

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