초록 ▼

A polyester resin is disclosed containing graphite in sufficient quantities to reduce its infrared heat up time in the reheat-blow process. The amount of graphite added is from 0.1 to 15 ppm and the average particle size is from 0.1 to 20 microns. The polyester is useful to make bottle preforms for

A polyester resin is disclosed containing graphite in sufficient quantities to reduce its infrared heat up time in the reheat-blow process. The amount of graphite added is from 0.1 to 15 ppm and the average particle size is from 0.1 to 20 microns. The polyester is useful to make bottle preforms for beverage containers. Methods of making the polyester resin are also disclosed using a masterbatch or liquid slurry addition technique.

대표청구항 ▼

[ What is claimed as our invention is as follows:] [1.] A high clarity polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material wherein said infrared absorbing material is graphite, wherein the amount of said graphite is present from about 0.1 to 15 p

[ What is claimed as our invention is as follows:] [1.] A high clarity polyester comprising: a polyester, said polyester having a small amount of an infrared absorbing material wherein said infrared absorbing material is graphite, wherein the amount of said graphite is present from about 0.1 to 15 parts by weight per million parts by weight of said polyester, wherein said graphite has an average particle size of from about 0.1 to about 20 microns, and wherein said polyester, exclusive of other added colorants, has a Hunter a* coordinate value of from about minus 2.0 to 2.0, a Hunter b* coordinate value of from about minus 3.0 to 2.0, and a Hunter L* value of greater than about 65.