Massey Fred L. (Uniontown OH) Callander Douglas D. (Akron OH)
출원인 / 주소
The Goodyear Tire & Rubber Company (Akron OH 02)
인용정보
피인용 횟수 :
31인용 특허 :
6
초록▼
A polyester which when made into an article such as films, containers, bottles and the like has a very high clarity, a low haze value, and a neutral hue. In the preparation of the resin, an antimony catalyst is utilized along with small amounts of a bluing agent such as a cobalt compound and a phosp
A polyester which when made into an article such as films, containers, bottles and the like has a very high clarity, a low haze value, and a neutral hue. In the preparation of the resin, an antimony catalyst is utilized along with small amounts of a bluing agent such as a cobalt compound and a phosphate compound with the phosphate compound generally being slightly in excess of an equivalent amount of the cobalt compound. The polyester is made from dicarboxylic acids and preferably aromatic acids such as terephthalic acid reacted with polyhydric alcohols.
대표청구항▼
A polyester, comprising: a polyester resin, said polyester resin made solely by adding a dicarboxylic acid to a glycol compound in a molar ratio of said alcohol to said acid of from 1.7:1 to 1.05:1, said dicarboxylic acid selected from the group consisting of alkyl dicarboxylic acids having a total
A polyester, comprising: a polyester resin, said polyester resin made solely by adding a dicarboxylic acid to a glycol compound in a molar ratio of said alcohol to said acid of from 1.7:1 to 1.05:1, said dicarboxylic acid selected from the group consisting of alkyl dicarboxylic acids having a total of from 2 to 16 carbon atoms, aryl or alkyl substituted aryl dicarboxylic acids containing a total of from 8 to 16 carbon atoms, and combinations thereof, and wherein said glycol is selected from the group consisting of glycols having from 2 to 12 carbon atoms, glycol ethers having from 4 to 12 carbon atoms, and combinations thereof, forming a mixture by adding a phosphorus compound, a cobalt compound as well as said alcohol and said acid to a solvent consisting of a preformed molecular weight linear condensation polyester of a glycol and a dicarboxylic acid, said polyester having an average degree of polymerization of from 1.4 to 10, heating and reacting the mixture at a temperature from above the melting temperature of a low molecular weight linear polyester to 300°C. at a pressure of from about 20 to about 1000 pounds per square inch gauge pressure until a linear condensation polyester resin of said glycol and acid having an average degree of polymerization of from 1.4 to 10 is formed, adding a condensation antimony polymerization catalyst and then heating and reacting the mixture at a temperature of from about 260°C. to about 290°C. at a pressure of about ten millimeter of mercury or less until a linear polyester is formed, said polyester consisting essentially of said antimony compound, said phosphorus compound, and said cobalt compound, the amount of said antimony compound, based upon the amount of elemental antimony therein, ranging from about 70 to about 250 parts by weight per one million parts by weight of said polyester, the amount of said phosphorus compound, based upon the amount of elemental phosphorus therein, ranging from about 5 to about 60 parts by weight per million parts by weight of said polyester, the amount of said cobalt compound based upon the amount of elemental cobalt therein ranging from about 5 to about 50 parts by weight per million parts by weight of said polyester, the amount of said elemental phosphorus in said phosphorus compound ranging from about 0.35 to about 2.5 parts by weight for each part by weight of elemental cobalt in said cobalt compound, said polyester resin yielding a high clarity, low haze, neutral hue article having a haze value of less than 3.0.
Russin Nicholas C. (Kingsport TN) Tershansy Ronald A. (Kingsport TN) Kibler Charles J. (Kingsport TN), Process and catalyst inhibitor systems for preparing synthetic linear polyesters.
Russin Nicholas C. (Kingsport TN) Tershansy Ronald A. (Kingsport TN) Kibler Charles J. (Kingsport TN), Process and catalyst-inhibitor systems for preparing synthetic linear polyesters.
Yount, Thomas Lloyd; DeBruin, Bruce Roger; Windes, Larry Cates; Flores, Roy Douglas; White, Alan Wayne; Bellner, Steven Paul, Horizontal trayed reactor.
Mary Therese Jernigan ; Carol Juilliard Greene ; Perry Michael Murdaugh ; Alan Wayne White ; Cheuk Chung Yau, Method for making polyesters employing acidic phosphorus-containing compounds.
Yount, Thomas Lloyd; DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with dual headers.
DeBruin, Bruce Roger; Ekart, Michael Paul; Yount, Thomas Lloyd; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with internal tray.
Yount, Thomas Lloyd; DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with oppositely extending segments.
Yount, Thomas Lloyd; DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with vertically spaced segments.
Stautzenberger Adin L. (Corpus Christi TX) Quick Edward E. (Corpus Christi TX) Lobo Peter F. (North Plainfield NJ), Process for preparing low color polyarylates.
White,Alan Wayne; Ekart,Michael Paul; Windes,Larry Cates; Bonner,Richard Gill; Wonders,Alan George, Process for production of a polyester product from alkylene oxide and carboxylic acid.
Brink Andrew Edwin ; Pruett Wayne Payton ; Cherry Clinton ; Shackelford Kay Hunt, Thermally stable polyesters formed utilizing antimony compound as catalysts.
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