| 摘要 |
PCT No. PCT/GB88/01131 Sec. 371 Date Jul. 17, 1989 Sec. 102(e) Date Jul. 17, 1989 PCT Filed Dec. 16, 1988 PCT Pub. No. WO89/06244 PCT Pub. Date Jul. 13, 1989.A process for the manufacture of a polymer having at least one property P with a desired value D, the process being controlled by periodically sampling the polymer produced, or being produced by the process, determining the value of the property P by applying a correlation relationship with n results Ri of n absorbance measurements obtained by analyzing the sample with an infrared spectrometer at n wavelengths in the near infrared region and then using the difference between the determined value of the property P and the desired value D to control the process parameters using a process computer.
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