Union Carbide Corporation

The C.p. Hall Company

Steven P Hopper

Bernard Kanner

Craig Alan Bonda

Roswell E King, Iii

Curtis L Schilling

Jennifer M Quirk

Kimberly L Stefanisin

Arthur P De Monte

Dennis J Sepelak

Ronald D Svoboda

Criag A Bonda

STABLE SUNSCREEN COMPOSITION CONTAINING DIBENZOYLMETHANE DERIVATIVE, E.G., PARSOL 1789, AND C12, C16, C18 BRANCHED CHAIN HYDROXYBENZOATE AND/OR C12, C16 BRANCHED CHAIN BENZOATE STABILIZERS/SOLUBILIZERS

A sunscreen composition containing a UV-A dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL.RTM. 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative having formula (I): ##STR1## These long branched chain alkyl salicylates having a C.sub.4 branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

Skin care and sunscreen composition containing dibenzoylmethane

A sunscreen composition containing a UV-A dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL.RTM. 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative having formula (I): ##STR1## wherein m=5, 7, 9 or mixtures and

Hydrating skin care and sunscreen composition containing

A sunscreen composition containing a UV-B dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative selected from formula (I) and formula (II), and mixtures thereof: ##STR1## wherein m=5, 7, 9 or mixtures and n=4, 6, 8 or mixtures; ##STR2## wherein m=5, 7 or mixtures and n=4, 6 or mixtures. These long branched chain alkyl hydroxybenzoates and long branched chain benzoates having a C.sub.4.sup.+ branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

Stable sunscreen composition containing dibenzoylmethane derivative, E.

A plasticized polyvinyl chloride (PVC) resin composition and method of plasticizing and decreasing the hydrophobicity of said PVC resin for adherence of aqueous coating compositions, such as water-based inks, by incorporating into the PVC resin a polymeric plasticizer for PVC, a monomeric diacid plasticizer, comprising primarily a C.sub.5, C.sub.4 or C.sub.3 diacid plasticizer, or mixtures, in a ratio of polymeric/monomeric plasticizers of 5/95 to 95/5, preferably 90/10 to 60/40, and at least about 0.1%, based on the weight of the PVC resin, of a metal salt additive, wherein the metal salt is an oxide or a hydroxide and has an oxidation state of plus two, three or four, preferably calcium oxide and/or calcium hydroxide. The monomeric/polymeric plasticizer combination together with the metal salt additive(s) unexpectedly decreases the hydrophobicity of the PVC surface for strong adherence of water-based inks and coatings thereto.

PVC sheet material having improved water-based coating receptivity

Surfaces containing hydroxyl groups are rendered water-repellent through exposure to hydridoaminosilanes of the general formula

Hydridoaminosilane treatment for rendering surfaces water-repellent

A method of preparing silazane polymers, with 3 or more repeating units, of the general formula

Method for making polysilazanes

Triacetoxysilanes are prepared by adding a tris(amino)silane to acetic anhydride and maintaining the reaction mix at a temperature no greater than about 50.degree. C.

Process for preparing triacetoxysilanes from tris(amino)silanes

Silyl carbamates are produced by the reaction under suitable reaction conditions of silanes bearing at least one silicon-hydrogen bond of the formula: R.sub.4-x SiH.sub.x with an ammonium carbamate of the formula: R'R'NH.sub.2.sup..sym. R'R'NCO.sub.2.sup..crclbar.. This novel route is much simpler and more direct than those previously known and provides a new classes of silyl carbamates.

Silyl carbamates and synthesis thereof

A hydrogen bearing silyl carbamate of the general formula:

Hydrogen bearing silyl carbamates

A process whereby silanes of the general formula:

Process for the preparation of alkoxyhydridosilanes

A process whereby silanes of the general formula

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Glen Ellyn, IL, United States of America

Steven P Hopper