A polylactic acid copolymer having more improved hydrolizability and hydrophilic property than those of the polylactic acid. The polylactic acid copolymer is obtained by the copolymerization of a polylactic acid with an acid-releasing ester polymer capable of releasing an acid other than the lactic acid upon the hydrolysis. The polylactic acid copolymer has a quantity of heat of fusion ΔH of not more than 20 J/g as measured by using the DSC when the temperature is elevated the second time, contains the copolymer units stemming from the acid-releasing ester polymer in an amount of 0.5 to 35% by mass, and has a weight average molecular weight in a range of 15,000 to 40,000.

A polylactic acid copolymer having more improved hydrolizability and hydrophilic property than those of the polylactic acid. The polylactic acid copolymer is obtained by the copolymerization of a polylactic acid with an acid-releasing ester polymer capable of releasing an acid other than the lactic acid upon the hydrolysis. The polylactic acid copolymer has a quantity of heat of fusion ΔH of not more than 20 J/g as measured by using the DSC when the temperature is elevated the second time, contains the copolymer units stemming from the acid-releasing ester polymer in an amount of 0.5 to 35% by mass, and has a weight average molecular weight in a range of 15,000 to 40,000.

Aqueous emulsions contain (A) oxamidoester-functionalized organopolysiloxanes having units of the formula

R.sup.1.sub.a(OR.sup.2).sub.bZ.sub.cSiO.sub.(4−a−b−c)/2   (I)

where
Z is a group of the formula

—Y—NR.sup.X—CO—CO—O—R.sup.3  (II),

with the proviso that the sum a+b+c is ≤3 and each molecule contains at least one radical Z.
(B) emulsifiers and
(C) water.

Aqueous emulsions contain (A) oxamidoester-functionalized organopolysiloxanes having units of the formula

R.sup.1.sub.a(OR.sup.2).sub.bZ.sub.cSiO.sub.(4−a−b−c)/2   (I)

where
Z is a group of the formula

—Y—NR.sup.X—CO—CO—O—R.sup.3  (II),

with the proviso that the sum a+b+c is ≤3 and each molecule contains at least one radical Z.
(B) emulsifiers and
(C) water.

The invention relates to a wax composition comprising linear hydrocarbons, branched hydrocarbons and oxidized hydrocarbons, wherein the composition is characterized by a congealing point from 68° C. to 110° C., an acid number in the range of 3 to 30 mg KOH/g, a saponification number of 20 to 90 mg KOH/g and a needle penetration at 25° C. of below 15 1/10 mm. The invention further relates to an aqueous dispersion comprising the wax composition and a method of manufacture of both the wax composition and the dispersion. The wax composition can be used to fully or partially substitute Carnauba wax or Candelilla wax.

The invention relates to a wax composition comprising linear hydrocarbons, branched hydrocarbons and oxidized hydrocarbons, wherein the composition is characterized by a congealing point from 68° C. to 110° C., an acid number in the range of 3 to 30 mg KOH/g, a saponification number of 20 to 90 mg KOH/g and a needle penetration at 25° C. of below 15 1/10 mm. The invention further relates to an aqueous dispersion comprising the wax composition and a method of manufacture of both the wax composition and the dispersion. The wax composition can be used to fully or partially substitute Carnauba wax or Candelilla wax.

A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and at least one kind selected from an alkylene glycol ether (B) and a monocarboxylic acid (C), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a boiling point of 200° C. or more and a molecular weight per 1 mol of 1,000 g/mol or less.

A water-soluble quenching fluid composition prepared by blending: water, at least one kind selected from a polyoxyalkylene glycol and a derivative thereof (A), and at least one kind selected from an alkylene glycol ether (B) and a monocarboxylic acid (C), the polyoxyalkylene glycol or a derivative thereof (A) having a mass average molecular weight of 10,000 or more and 100,000 or less, the alkylene glycol ether (B) having a boiling point of 200° C. or more and a molecular weight per 1 mol of 1,000 g/mol or less.

The present invention relates to an aqueous polyurethane-urea dispersion comprising at least one polyurethane-urea made of (A1) at least one polyisocyanate, (A2) at least one polycarbonate polyol having a heat flow below 3 J/g in the first circle of DSC testing from 20 to 100° C. according to testing method DIN 65467-1999, (A3) optionally, at least one polyether polyol with an OH functionality of 1.8 to 2.2, preferably 2.0, (A4) optionally, at least one compound having a molecular weight of 62 to 400 g/mol and possessing in total two or more hydroxyl and/or amino groups, (A5) optionally, at least one isocyanate-reactive nonionically hydrophilicizing compound, (A6) optionally, at least one isocyanate-reactive, ionically, or potentially ionically, hydrophilicizing compound, (A7) optionally, at least one neutralizing reagents, (A8) optionally, at least one additive, to a process for the preparation of sais aqueous polyurethane-urea dispersion, and to its use as a coating composition.

The present invention relates to an aqueous polyurethane-urea dispersion comprising at least one polyurethane-urea made of (A1) at least one polyisocyanate, (A2) at least one polycarbonate polyol having a heat flow below 3 J/g in the first circle of DSC testing from 20 to 100° C. according to testing method DIN 65467-1999, (A3) optionally, at least one polyether polyol with an OH functionality of 1.8 to 2.2, preferably 2.0, (A4) optionally, at least one compound having a molecular weight of 62 to 400 g/mol and possessing in total two or more hydroxyl and/or amino groups, (A5) optionally, at least one isocyanate-reactive nonionically hydrophilicizing compound, (A6) optionally, at least one isocyanate-reactive, ionically, or potentially ionically, hydrophilicizing compound, (A7) optionally, at least one neutralizing reagents, (A8) optionally, at least one additive, to a process for the preparation of sais aqueous polyurethane-urea dispersion, and to its use as a coating composition.