Liquid of acrylic copolymer and tetrahydrofurantetracarboxylic acid for setting dental cements

A liquid for settling dental cements in which a 45 to 55% aqueous solution of a copolymer of acrylic acid and maleic acid contains a tetrahydrofurantetracarboxylic acid and at least one of organic carboxylic acids that are compounds consisting of only a combination of C, H and O, having a structure comprising six or less skeletal carbon atoms to which relative carboxyl groups are bonded directly, as expressed by the general formula:

• C.sub.m H.sub.n (COOH).sub.x (OH).sub.y
• wherein m, n, x and y stand for integers on condition that m=1-6, n=0-6, x=(m/2)-6 (m:
• an even number) or [(m+1)/2]-6 (m:
• an uneven number), and y=0-1, and having in its skeleton at most one methylene group (--CH.sub.2 --) but neither other groups nor any double bonds that are soluble and easily polymerizable, in a total amount ranging from 10 to 30% based on the total weight.

A liquid for setting dental cements in which a 45 to 55% aqueous solution of a copolymer of acrylic acid and maleic acid contains a tetrahydrofurantetracarboxylic acid and at least one of organic carboxylic acids that are compounds consisting of only a combination of C, H and O, having a structure comprising six or less skeletal carbon atoms to which relative carboxyl groups are bonded directly, as expressed by the general formula:

• C.sub.m H.sub.n (COOH).sub.x (OH).sub.y
• wherein m, n, x and y stand for integers on condition that m=1-6, n=0-6, x=(m/2)-6 (m:
• an even number) or [(m+1)/2]-6 (m:
• an uneven number), and y=0-1, and having in its skeleton at most one methylene group (--CH.sub.2 --) but neither other groups nor any double bonds that are soluble and easily polymerizable, in a total amount ranging from 10 to 30% based on the total weight, and further contains fluorocomplex salts in amounts ranging from 0.1 to 5% based on the total weight.

A liquid for setting dental cements in which a 45 to 55% aqueous solution of a copolymer of acrylic acid and maleic acid contains a tetrahydrofurantetracarboxylic acid, tartaric acid and at least one of organic carboxylic acids that are compounds consisting of only a combination of C, H and O, having a structure comprising six or less skeletal carbon atoms to which relative carboxyl groups are bonded directly, as expressed by the general formula:

• C.sub.m H.sub.n (COOH).sub.x (OH).sub.y
• wherein m, n, x and y stand for integers on condition that m=1-6, n=0-6, x=(m/2)-6 (m:
• an even number) or [(m+1)/2]-6 (m:
• an uneven number), and y=0-1, and having in its skeleton at most one methylene group (--CH.sub.2 --) but neither other groups nor any double bonds that are soluble and easily polymerizable, in a total amount ranging from 10 to 30% based on the total weight.

A liquid for setting dental cements in which a 45 to 55% aqueous solution of a copolymer of acrylic acid and maleic acid contains a tetrahydrofurantetracarboxylic acid, tartaric acid and at least one of organic carboxylic acids that are compounds consisting of only a combination of C, H and O, having a structure comprising six or less skeletal carbon atoms to which relative carboxyl groups are bonded directly, as expressed by the general formula:

• C.sub.m H.sub.n (COOH).sub.x (OH).sub.y
• wherein m, n, x and y stand for integers on condition that m=1-6, n=0-6, x=(m/2)-6 (m:
• an even number) or [(m+1)/2]-6 (m:
• an uneven number), and y=0-1, and having in its skeleton at most one methylene group (--CH.sub.2 --) but neither other groups nor any double bonds that are soluble and easily polymerizable, in a total amount ranging from 10 to 30% based on the total weight, and further contains fluorocomplex salts in amounts ranging from 0.1 to 5% based on the total weight.