Glycol carbonate ester stabilizers for synthetic resins

Details Glycol carbonate ester stabilizers for synthetic resins Glycol carbonate ester stabilizers for synthetic resins

1978-05-10

1981-03-10

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252399, 252404, 252406, 260 22A, 260 23XA, 260 23H, 260 457PH, 260 4595R, 260 4595D, 260 4585R, 260 4575N, 260 458N, 2603407, 2603474, 260463, 528196, C08K 504

Patent

active

042553016

ABSTRACT:
Stabilizer compositions comprising a polymer stabilizer and a carbonate ester of cyclic dihydroxy compounds protect synthetic resins against the harmful effects of light having a wavelength less than 400 nanometers. The carbonate ester can be represented by the formula ##STR1## in which a is a number from 1 to 50, A is hydrogen or ##STR2## B is R' or --G--OH, R and R' are independently alkyl, alkoxyalkyl, cycloalkyl, aryl, aryloxyalkyl, aralkyl, or alkaryl groups, and G in at least one occurrence is a residue of a cycloaliphatic or non-aromatic oxygen heterocyclic dihydroxy compound having 3 to 20 carbon atoms and 1 or 2 rings of 3 to 12 members, of which up to 4 can be oxygen. Additional occurrences of G can be aliphatic glycol or bisphenol residues if desired. The polymer stabilizer included in the stabilizer compositions with carbonate esters of cyclic dihydroxy compounds can include metal carboxylate salts 1,2-epoxides, phenols, organic phosphites, esters of thiodipropionic acid, 2-hydroxybenzophenones, 2(2'-hydroxyaryl)benzotriazoles, nickel phenolates, and carboxylic acids of 2,2,6,6-tetraalkylpiperidine-4-alcohols.
There are also provided stabilized synthetic resin compositions comprising a stabilizer composition including a carbonate ester of a cyclic dihydroxy compound as defined.

REFERENCES:
patent: 2945008 (1960-07-01), Caldwell et al.
patent: 2964797 (1960-12-01), Peilstocker et al.
patent: 3359242 (1967-12-01), Seeliger
patent: 3360501 (1967-12-01), Widmer et al.
patent: 3449298 (1969-06-01), Matzner
patent: 3475372 (1969-10-01), Gable
patent: 3489716 (1970-01-01), Calkins
patent: 3546332 (1970-12-01), Merriam et al.
patent: 3549682 (1970-12-01), Vernaleken et al.
patent: 3631200 (1971-12-01), Nehring et al.

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