67 results about "Endotherm" patented technology

A bulk of polyester polymer particles comprising polyester polymer comprising greater than 75% virgin polyester polymer, the particles having: A) an It.V. of at least 0.72 dl/g, and B) 10 ppm or less of residual acetaldehyde; and C) at least two melting peaks, wherein one of said at least two melting peaks is a low peak melting point within a range of 140° C. to 220° C. and having a melting endotherm area of at least the absolute value of 1 J/g.

The particles may also have a degree of crystallinity within a range of 20% and a maximum degree of crystallinity T_cmax defined by the equation:

T_cmax=50%−CA−OH

where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues, and OH is the total mole % of all hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of hydroxyl functional compounds residues. The preforms and bottles made from these particles can be obtained by melt processing these particles at either lower overall power, faster screw speeds, lower residence time, or lower overall cycle time to thereby reduce the level of residual acetaldehyde generated in the melt.

To provide a developer that includes a carrier and a toner having base particles each containing a binder resin and a paraffin wax, wherein the base particle has a paraffin wax-originated endotherm from 2.0 J/g to 5.5 J/g at an endothermic peak as measured by DSC, an average circularity from 0.94 to 1.00, and a contact area-to-whole projected area ratio from 15% to 40%.

A polymorphic form of 9-nitrocamptothecin is provided, the polymorph being characterizable as having, by differential scanning calorimetry, an endotherm at between 149.2 and 151.2° C., an exotherm at between 162.6 and 164.6° C., and an exotherm at between 272 and 274° C.

The present invention provides a thermoplastic resin composition that gives a solar cell sealing sheet having, even without being crosslinked, good mechanical strength, solar cell sealability, transparency, and weatherability.

The thermoplastic resin composition of the present invention comprises 1 to 95% by weight of a propylene-based polymer (A) and 5 to 99% by weight of a copolymer (B) with at least one .-olefin having 2 to 20 carbon atoms other than propylene, wherein (A) satisfies the following (i) and (ii), and (B) has a melting point below 80° C. or does not show a melting point as measured by a differential scanning calorimeter (DSC).

• (i) Melting point measured by a differential scanning calorimeter (DSC) method is in the range of 80 to 135° C.
• (ii) Endotherm attributable to crystal melting is not observed at 140° C. or more in the endothermic curve measured by a differential scanning calorimeter (DSC) method.

There is provided a conductive filler with high heat resistance which can be melt-bonded under reflow heat treatment conditions for a lead-free solder and, after the bonding, does not melt under the same heat treatment conditions. The conductive filler is characterized in that, as measured by differential scanning calorimetry, it has at least one metastable metal alloy phase observed as an exothermic peak and has at least one melting point observed as an endothermic peak in each of the 210 to 240° C. range and the 300 to 450° C. range, and that the filler, upon heat treatment at 246° C., gives a bonded object which has, as measured by differential scanning calorimetry, no melting point observed as an endothermic peak in the 210 to 240° C. range or has a melting endotherm calculated from an endothermic peak area in the 210 to 240° C. range, the melting endotherm being 90% or less of the melting endotherm of the filler before bonding calculated from an endothermic peak area in the 210 to 240° C. range.

A toner of the present invention includes a first wax and a second wax. The endothermic peak temperature of the first wax by the DSC method is 50° C. to 90° C. The endothermic peak temperature of the second wax is 5° C. to 50° C. higher than that of the first wax. Jmw1/Jw1 is 0.5 or less and Jmw2/Jw2 is 0.5 to 1.2, where Jw1 represents the endotherm of the first wax, Jw2 represents the endotherm of the second wax, Jmw1 represents the melting endotherm of the first wax by the MDSC method, and Jmw2 represents the melting endotherm of the second wax. The first wax and the second wax are mixed into a dispersion beforehand, the dispersion is then mixed with a resin particle dispersion and a colorant particle dispersion, and the particles are aggregated to form core particles. Thus, a toner having a small particle size and a sharp particle size distribution can be produced without requiring a classification process.

A process for preparing thermoplastic polyamide compositions that exhibit decreased melt flow and similar physical properties in comparison with conventional systems, in which polyamide is melt-blended with at least one organic acid, and, optionally, one or more additional components, such that the organic acid has a melting point that is no lower than about 10° C. less than the onset temperature of the melting point endotherm of the polyamide. The process results in decreased levels of corrosion and erosion of standard processing equipment in comparison with other processes for decreasing the melt flow while maintaining the physical properties of thermoplastic polyamide compositions. Articles of manufacture made according to the instant process and composition described therein are also disclosed.

Spheroidal polyester polymer particles, as well as preforms and stretch blow molded bottles made from the spheroidal particles, are provided which have: A) an It.V. of at least 0.72 dL/g, and either B) at least two melting peaks (on a DSC first heating scan), wherein one of said at least two melting peaks is a low peak melting point having a peak temperature within a range of 140° C. to 220° C. and having a melting endotherm area of at least the absolute value of 1 J/g, or

• • C) a low degree of crystallinity within a range of at least 20% and a maximum degree of crystallinity T_cmax defined by the equation:

T_cmax=50%−CA−OH

where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues in the polyester polymer, and OH is the total mole % of hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of the hydroxyl functional compounds residues; or both B) and C); and optionally but preferably D) 10 ppm or less of residual acetaldehyde.

A process for the preparation of mineral filled polyamide and polyester compositions having increased melt flow, in which polyamide or polyester is melt-blended with at least one aromatic carboxylic acid and/or anhydride, mineral filler, and optionally, one or more additional components, wherein the aromatic carboxylic acid and/or anhydride has a melting point that is no greater than the onset temperature of the melting point endotherm of the polyamide or polyester.

Disclosed is a catalyst carrier which is used for carrying a catalyst thereon. The catalyst carrier is characterized in that the apparent specific heat measured at 800° C. is 1.8 times or more greater than that measured at room temperature, wherein the apparent specific heat means a charge heat amount required for substantially increasing the temperature of a unit mass (kg) by 1 K, inclusive of the influence of endotherm or exotherm caused by change in crystalline form, partial melting, coagulation, phase transformation, vitrification, amorphous-formation, crystallization and the like.

The invention refers to a medicine combination which can cure and prevent the fatty liver in mammal, especially in human and endotherm. It contains a safe and effective amount of pyrrole & quinoline quinone and/or its acceptable salt and/or ester in pharmacy as the active component, and the acceptable carrier in pharmacy. It has a remarkably curative effect on the fatty liver,

A method for the manufacture of a multilayer circuit comprising a liquid crystalline polymer layer, the method comprising treating the multilayer circuit with an amount of heat effective to raise the crystalline to nematic melting point, as defined by the peak endotherm above the glass transition temperature in a differential scanning calorimeter measurement, of the liquid crystalline polymer layer by at least about 10° C.

The invention provides a plant active flame-proof extinguishing agent, which mainly comprises active water and plant composite flame-proof active agent. the active water is prepared mainly from grain stillage and plant ash through leaching. The weight ratio of the composite flame-proof activator and active water is 10-25 : 75-90.

A conductive paste including (A) conductive particles, (B) a glass frit containing substantially no lead, arsenic, tellurium, and antimony, and (C) a solvent. The glass frit (B) has a remelting temperature of 320 to 360° C., wherein the remelting temperature is indicated by a peak top of at least one endothermic peak having an endotherm of 20 J/g or more in a DSC curve as measured by a differential scanning calorimeter. The conductive paste can also include at least one metal oxide (D) selected from the group consisting of tin oxide, zinc oxide, indium oxide, and copper oxide. The glass frit (B) can further include (B-1) Ag₂O, (B-2) V₂O₅, and (B-3) MoO₃. The conductive paste can achieve binding at a relatively low temperature (such as 370° C. or lower) and maintains a bond strength at a relatively high temperature (such as 300 to 360° C.).

The invention relates to a temperature-controlled sustained-release injection containing an alkylating agent and a preparation method thereof, the temperature-controlled sustained-release injection comprises effective anti-cancer amount of the alkylating agent, an amphiphilic block copolymer, a solvent and a certain amount of drug release regulator, wherein, the mixture of the amphiphilic block copolymer and a solvent without organic solvent has the temperature-sensitive gelatinization feature, which is flowable liquid in the environment that is lower than the body temperature and can be automatically converted to the water-insoluble gel that can not flow and be biodegradable for absorption in an endotherm, and the water-insoluble gel can allow the contained angiogenesis inhibitor to have the local sustained release in a tumor and maintain the effective drug concentration for a plurality of weeks to a plurality of months. The sustained-release gel injection can be injected in the tumor or the tumor periphery or be arranged in the postoperative tumor cavity, thus significantly reducing the systemic reaction of the drug and being used for the treatment of the tumors in different stages. The alkylating agent is selected from cyclophosphamide, melphalan, leukeran, 4H-cyclophosphamide peroxide, norcantharidin, mannosulfan, treosulfan, ritrosulfan, ethoglucid, pipobroman, piposulfan, pumitepa, uredepa, azatepa and so on.

Provided is a filter comprising a polypropylene-based resin composition satisfying the following (1) to (3), the filter being made compatible with respect to collecting property and air permeability. (1) A melt flow rate 10 to 2,000 g/10 min. (2) A melting endotherm ΔH as measured by a differential scanning calorimeter is 50 to 95 J/g. (3) A polypropylene (A) having [mmmm] of 20 to 60 mol % is contained.

The invention discloses an annealing oven by adopting heat pipe to proceed to cool rapidly in the annealing technique domain, which comprises the following parts: hot-blast outlet, heat pipe radiating end, cold air blower, wind screen, heat-exchanging room, heat pipe endotherm end, heat cycle fan, downward vent, thermal wall, air deflector, heating chamber, upward vent, power handspike, cooling chamber, wherein the heat pipe endotherm end is fixed in heat-exchanging room; the heat pipe radiating end is installed in cooling chamber; the cold air blower is installed in the lower part of cooling chamber; the hot-blast outlet is installed on the top of cooling chamber; the thermal wall is installed between heat-exchanging room and heating chamber; there are no downward vent and upward vent on the thermal wall; the wind screen is installed next to thermal wall on the side of heat-exchanging room of thermal wall; the wind screen connects to power handspike. The invention adopts heat pipe in heat-exchanger rig, which improves the efficiency of heat transfer.