摘要:
The invention relates to build-up agents which comprise a condensation product among an aldehyde, a phenol compound and an aromatic carboxylic acid, hydroxy-substituted on the aromatic nucleus. The products are particularly effective in reducing or suppressing the build-up formation in the polymerization of vinyl chloride or vinyl acetate, other copolymerizable substances being optionally present. Further objects of the invention are compositions containing the above agents, their use as build-up agents, methods for their preparation and the products obtained therefrom, the polymerization processes carried out in reactors whose inner walls are coated with these agents and polymers obtained from these process.
摘要:
Polyquaternary compounds, a process for the preparation thereof and the use thereof as adjuvants to improve the washing fastness of cellulose fabrics or fibres dyed with direct or reactive dyes.
摘要:
Free radical deactivating 4- or 1,4-substituted, 2,2,6,6-tetramethyl piperidines are condensed with UV absorbing cinnamic acids or benzoic acids or benzoazols or benzophenones to produce skin anti-aging compounds and compositions which have both free radical deactivation and UV absorbing properties.
摘要:
The present invention relates to solid compositions of polymers or copolymers of unsaturated carboxylic acids partially or completely neutralized, a process for the preparation thereof and the use thereof as thickening agents.
摘要:
The invention relates to novel polypiperidine compounds which give polymer materials high stability against oxidation and degradation when exposed to light, and to the process for the production thereof.
摘要:
Build-up suppressing compositions, comprising: a) at least one condensation product between an aldehyde, a phenol compound and an aromatic hydroxycarboxylic acid, or at least one condensation product between formaldehyde and an optionally substituted alpha-naphthol, and b) at least one polycarboxylic acid.
摘要:
Cosmetic compositions containing sunscreens against sun radiation ranging from 280 to 380 nm, and their use for the protection of the skin from UV radiation. The sunscreens comprise, with respect to the weight of the composition: a) from 1 to 10% of one or more derivatives of formula (I) ##STR1## wherein Q is hydrogen or C.sub.1 -C.sub.4 alkoxy and G is C.sub.1 -C.sub.8 alkyl; b) from 0.5 to 10% of one or more derivatives of formula (II): ##STR2## wherein R.sub.1 is C.sub.1 -C.sub.8 alkyl; and c) from 1 to 10% of one or more derivatives of formula (III) ##STR3## wherein R2 is C.sub.1 -C.sub.8 alkyl and R.sub.3 has independently the same meanings as R.sub.2 or is hydrogen or is an alkali metal; with the condition that the weight ratio between the compounds of formula (II) and the compounds of formula (I) is at least 0.5.
摘要:
Compounds of the general formula I ##STR1## R and R.sub.1, which can be the same or different, are hydrogen or a C.sub.1 -C.sub.8 straight or branched alkyl group, R.sub.2 is hydrogen or the group OR.sub.4, wherein R.sub.4 is a C.sub.1 -C.sub.4 alkyl group,R.sub.3 is hydrogen, methyl or ethyl,X is oxygen or the NR.sub.5 group, wherein R.sub.5 is hydrogen or C.sub.1 -C.sub.18 straight or branched alkyl group n is the number 1 or 2,A, when n is 1, is a C.sub.1 -C.sub.20 straight or branched alkyl group, C.sub.6 -C.sub.12 cycloalkyl group, the group of formula (II), ##STR2## wherein R.sub.6 is hydrogen or methyl group or a group of formula (III) ##STR3## wherein R.sub.6 has the above meanings and R.sub.7 is C.sub.1 -C.sub.18 straight or branched alkyl group, phenyl, optionally substituted with a C.sub.1 -C.sub.4 straight or branched alkyl group, m can have the values from 0 to 4,A, when n is 2 is C.sub.2 -C.sub.12 alkylene or the group of formula (IV) ##STR4## wherein R.sub.8 and R.sub.9, which may be the same or different, are hydrogen or methyl group, p is a number from 1 to 4, have stabilizing activity against UV radiation and are useful in cosmetics and plastic materials.
摘要:
A composition for stabilizing synthetic polymers consisting of a blend ofa) at least a derivative of a high molecular weight polymethylpiperidine of formula (I) ##STR1## wherein the groups are as defined hereinafter, and b) at least one other HALS stabilizer wherein the groups are as defined hereinafter is disclosed. These compositions show photostabilizing and antioxidant properties.