Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1992-12-03
1994-02-15
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
2641761, 264178F, 528321, 528331, 528337, 528342, C08G 7300
Patent
active
052868338
ABSTRACT:
A process for making PBZ fibers of ultra-high physical properties is given. Polybenzoxazole fibers made by the process of this invention have tensile strengths nearly double in value from what has been reported previously.
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MRS, vol. 134, The Materials Science and Engineering of Rigid-Rod Polymers, "An Integrated Laboratory Process For Preparing Rigid Rod Fibers From The Monomers" by Harvey D. Ledbetter pp. 253-264 Feb. 1993.
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The following Pending U.S. patent applications: Ser. No. 984,828 (Attorney Docket No. 39,942); Ser. No. 985,078 (Attorney Docket No. C-40,621); Ser. No. 985,079 (Attorney Docket No. C-40,622); Ser. No. 985,080 (Attorney Docket No. C-40,623); Ser. No. 985,068 (Attorney Docket No. C-40,624) and Ser. No. 985,067 (Attorney Docket No. C-40,765) all listed applications were filed on Dec. 3, 1992 by The Dow Chemical Company.
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Bubeck Robert A.
Chau Chieh-Chun
Newsham Mark D.
Nolan Stephen J.
Rosenberg Steven
Anderson Harold D.
Brumm Margaret M.
The Dow Chemical Company
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