| 摘要 |
Cellulose esters such as cellulose acetate, cellulose ethers, polyvinyl compounds such as polyvinyl chloride, polyvinyl acetate and polystyrene, chlorinated rubber, alkyd resins, polyesters such as a polycarbonate containing recurring units of the formula:- <FORM:0926689/IV(a)/1> polymers of acrylic acid and functional derivatives thereof, polyethylene, and polypropylene are plasticized in the presence or absence of organic solvents with pentaerythritol derivatives of the formula:- <FORM:0926689/IV(a)/2> in which X and Y each represent a -CH2-O-C2H4.CN radical or together represent a radical of the general formula:- <FORM:0926689/IV(a)/3> in which R1, R2 and R3 may represent independently alkyl, substituted alkyl, aryl or substituted aryl groups, and specified substituents in the alkyl and aryl groups are amino, substituted amino, halogens, nitro, carbethoxy and cyano. The resulting plasticized compositions may be used in the production of films, foils, lacquers, protective coatings, and other shaped articles. The above plasticizers may also be used in conjunction with other plasticizers, viz. esters of phosphoric acid (e.g. tricresol phosphate), phthalic acid, adipic acid and sebacic acid. Examples illustrate the incorporation of these plasticizers in solutions of cellulose acetate in a solvent mixture of isopropanol and methylene chloride.ALSO:The invention comprises compounds of the formula:- <FORM:0926689/IV(a)/1> in which X and Y each represent a -CH2-O-C2H4.CN radical or together represent a radical of the general formula:- <FORM:0926689/IV(a)/2> in which R1, R2 and R3 may represent independently alkyl, substituted alkyl, aryl or substituted aryl groups, and specified substituents in the alkyl and aryl groups are amino, substituted amino, halogens, nitro, carbethoxy and cyano. The compound in which X and Y each represent a -CH2-O-C2H4.CN is prepared by reacting an aqueous or organic solution of pentaerythritol with at least 4 moles of acrylonitrile in the presence of a compound having an alkaline reaction. The compounds having a dioxane structure are prepared by reacting pentaerythritol with two moles of acrylonitrile and further reacting the resulting dicyanethyl ether of pentaerythritol with an appropriate aldehyde or ketone. Alternatively, pentaerythritol may be reacted with an equimolar amount of an appropriate aldehyde or ketone and the resulting intermediates of the formulae:- <FORM:0926689/IV(a)/3> and <FORM:0926689/IV(a)/4> further reacted with two moles of acrylonitrile. The products are used as plasticizers for organic polymer compositions. Specification 629,691 is referred to. |
