DETAILED ACTION
Claim Rejections - 35 USC § 102
The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action:
A person shall be entitled to a patent unless –
(a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention.
Claim 2 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kim et al. (US 6,784,133).
Example 1 of Kim et al. teaches a method for producing a solid catalyst precursor comprising contacting magnesium chloride, titanium tetrachloride, and silicon tetrachloride with under a pressure of 1.5 bar. The solid catalyst precursor is then contacted with titanium tetrachloride and diisobutyl phthalate, resulting in the formation of a solid olefin polymerization catalyst.
Allowable Subject Matter
Claims 1 and 3-6 are allowed.
The present invention is drawn to a solid catalyst component comprising magnesium, titanium, halogen, and an internal electron-donating compound, wherein a cross-sectional pore area ratio is 10 to 50 % and a ratio MXi/MXs of a cross-sectional pore area ration (MXi) in a region of less than 50 % in a radial direction to a cross-sectional pore area ratio (MXs) in a region of 50 % or more in the radial direction from a particle center is 0.50 to 2.00.
Another embodiment of the invention is an olefin polymer particle wherein a cross-sectional pore area ratio is 10 to 50 % and a ratio MʹXi/MʹXs of a cross-sectional pore area ration (MʹXi) in a region of less than 50 % in a radial direction to a cross-sectional pore area ratio (MʹXs) in a region of 50 % or more in the radial direction from a particle center is 0.50 to 2.00.
Subject of claims is patentably distinct over prior art cited by Applicant and over references listed in the accompanying PTO-892. None of the references teaches the solid catalyst component or olefin polymer particle described in instant claims. While Kim et al. discloses a solid catalyst component by contacting catalyst components under pressure greater than 1 atm, the catalyst does not contain the components utilized in instant invention and the catalyst is prepared in a different manner. Therefore, there is no reasonable basis to conclude that the solid catalyst of prior art will exhibit claimed morphological properties.
Any inquiry concerning this communication or earlier communications from the examiner should be directed to Rip A. Lee whose telephone number is (571)272-1104. The examiner can be reached on Monday through Friday from 9:00 AM - 5:00 PM. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Robert Jones, can be reached at (571)270-7733. The fax phone number for the organization where this application or proceeding is assigned is (571)273-8300.
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/RIP A LEE/
Primary Examiner, Art Unit 1762
December 3, 2025