Tetrahydrofurancarboxylic acid derivatives

Details Tetrahydrofurancarboxylic acid derivatives Tetrahydrofurancarboxylic acid derivatives

1986-06-16

1987-10-27

Kight, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524103, 252401, 252403, 546 16, 546187, 546214, C08K 534

Patent

active

047030720

ABSTRACT:
Novel tetrahydrofurancarboxylic acid derivatives of the general formula I ##STR1## or polymers of these containing units of the formula II ##STR2## where the radicals R independently of one another are each C.sub.1 -C.sub.4 -alkyl, cyclohexyl or phenyl, m is from 0 to 3, n is 1 or 2, and R' is a radical of the formula ##STR3## suitable terminal groups in the polymers being chlorine or hydroxyl in the case of the CO group and hydrogen in the case of the --NR.sup.2 group, A is a bridge member, R.sup.1 is hydrogen, C.sub.2 -C.sub.6 -alkenyl, C.sub.1 -C.sub.12 -alkyl which may be interrupted by up to 3 oxygen atoms, unsubstituted or substituted phenylalkyl or C.sub.5 -C.sub.7 -cycloalkyl and R.sup.2 is radical of the formula ##STR4## where R.sup.3 is hydrogen or methyl, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are each methyl or ethyl and R.sup.8 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -alkenyl, C.sub.2 -C.sub.4 -hydroxyalkyl or aralkyl, and salts of the compounds I and II, are very useful as light stabilizers for organic polymers.

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Chemical Abstracts, Band 88, nr. 2, 9 Jan. 1978, Columbus, Ohio.
Chemical Abstracts, Band 89, Nr. 14, 2 Oct. 1978, Columbus, Ohio.

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