摘要:
A method provides a guest access to a defined space selectively accessible through an automated gate. The method includes the steps of causing a resident interface to be displayed to a resident via a resident data device. Guest data is received from the resident about the guest using the resident data device. The guest data is transmitted to a central station. The guest identifies when the guest arrives at the automated gate. The method also opens the automated gate to allow the guest to travel into the defined space after the automated gate is opened.
摘要:
Processes for producing polyethylene terephthalate copolyesters are disclosed, that include the steps of: esterifying a mixture of at least terephthalic acid, from 20 mole percent to 45 mole percent 1,4-cyclohexanedimethanol, and ethylene glycol, optionally in the presence of one or more alkaline earth metals or alkali metals, to form an oligomer; polycondensing the oligomer in the melt phase in the presence of aluminum and one or more alkaline earth metals or alkali metals, to obtain a copolyester having an intrinsic viscosity of at least 0.5 dL/g; and thereafter adding to the copolyester a phosphorus-containing compound.
摘要:
The invention pertains to methods for preparing modified condensation polymers wherein the steps include: (a) preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; (b) introducing the polymer colloid system into a glycolysis reaction medium prior to or during a glycolysis reaction wherein the glycolysis reaction medium comprises a polyester, copolyester, polyesteramide, polycarbonate or a mixture thereof; wherein the glycolysis reaction medium optionally comprises a diol component; and polymerizing the fully or partially glycolyzed polyester, copolyester, polyesteramide, polycarbonate or mixture thereof, thereby providing a condensation polymer/first polymer matrix.
摘要:
Processes for producing polyethylene terephthalate copolyesters are disclosed, that include the steps of: esterifying a mixture of at least terephthalic acid, from 20 mole percent to 45 mole percent 1,4-cyclohexanedimethanol, and ethylene glycol, optionally in the presence of one or more alkaline earth metals or alkali metals, to form an oligomer; polycondensing the oligomer in the melt phase in the presence of aluminum and one or more alkaline earth metals or alkali metals, to obtain a copolyester having an intrinsic viscosity of at least 0.5 dL/g; and thereafter adding to the copolyester a phosphorus-containing compound.
摘要:
The invention pertains to methods for preparing modified condensation polymers wherein the steps include: preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; introducing the polymer colloid system into a condensation reaction medium prior to or during the condensation reaction, wherein the condensation reaction medium comprises (1) a diacid, di-isocyanate, dialkyl carbonate, diaryl carbonate, dihalo carbonate or a mixture thereof, wherein the condensation reaction medium optionally comprises a diol component; and polymerizing the diol component and component (1), thereby forming a modified condensation polymer.
摘要:
A method provides a guest access to a defined space selectively accessible through an automated gate. The method includes the steps of causing a resident interface to be displayed to a resident via a resident data device. Guest data is received from the resident about the guest using the resident data device. The guest data is transmitted to a central station. The guest identifies when the guest arrives at the automated gate. The method also opens the automated gate to allow the guest to travel into the defined space after the automated gate is opened.
摘要:
In a first aspect, the invention provides a diol latex composition comprising: (a) latex polymer particles comprising a residue of an ethylenically unsaturated monomer, wherein the latex polymer particles have a size below 1000 mn; (b) a surfactant; and (c) a continuous liquid phase comprising a diol component, wherein the diol component comprises from 60 to 100% by weight of the continuous phase, wherein the latex polymer particles are dispersed in the continuous phase. In a next aspect, the invention provides a method of making a condensation polymer/first polymer matrix comprising the steps of: (a) preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; and (b) introducing the polymer colloid system into a condensation reaction medium prior to or during the condensation reaction, wherein the condensation reaction medium comprises (1) a diacid, di-isocyanate, dialkyl carbonate, diaryl carbonate, dihalo carbonate or a mixture thereof, wherein the liquid continuous phase, the condensation reaction medium or both comprises a diol component; and (c) polymerizing the diol component and component b(1), thereby forming a condensation polymer/first polymer matrix.