Neodymium-containing transparent resin and method for manufactur

Details Neodymium-containing transparent resin and method for manufactur Neodymium-containing transparent resin and method for manufactur

1983-07-28

1985-03-12

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524287, 524322, 524321, 524320, 525360, 5253302, C08K 509

Patent

active

045046166

ABSTRACT:
A neodymium-containing transparent resin comprising (A) a copolymer of (i) at least one monomer selected from the group consisting of alkyl methacrylates having alkyl groups of 1 to 4 carbon atoms and styrene with (ii) at least one copolymerizable unsaturated carboxylic acid or a salt thereof selected from the group consisting of acrylic acid, methacrylic acid and neodymium salts thereof and (B) at least one compound selected from the group consisting of saturated or unsaturated organic carboxylic acids substituted or unsubstituted with a hydroxyl group and having 6 to 21 carbon atoms, and neodymium salts thereof, which transparent resin is characterized by having a neodymium content in the range of 0.3 to 20% by weight, having the number of carboxyl groups possessed by said organic carboxylic acids and salts thereof in a ratio of x to the total number of carboxyl groups possessed by the acrylic acid, methacrylic acid and salt units thereof present in said copolymer and carboxyl groups possessed by said organic carboxylic acids and salts thereof and having the number of carboxyl groups participating in neutralization of neodymium and consequent formation of a salt thereof in a ratio of y to said total number of carboxyl groups, and having the values of x and y satisfy any of the following formulas I, II and III. ##EQU1##

REFERENCES:
patent: 4296214 (1981-10-01), Kamada et al.

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