Process for forming acid functionalized organically-bridged poly

Details Process for forming acid functionalized organically-bridged poly Process for forming acid functionalized organically-bridged poly

1993-11-09

1994-12-06

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 25, 528 26, 528 35, 528 43, C08F28300

Patent

active

053711548

ABSTRACT:
A process for forming a solid acid catalyst where all of the add functionality is covalently bonded to the organic portion of an organically-bridged polysilsesquioxane framework has been developed. The process involves polymerizing a monomer through sol-gel processing to form an organically-bridged polysilsesquioxane, reacting an acid group onto the organic portion of the organically-bridged polysilsesquioxane, and recovering the acid functionalized product. The invention also includes the product acid functionalized organically-bridged polysilsesquioxane catalyst of the process described. The catalyst is unique in that the acid functionality is incorporated within an organic-inorganic hybrid framework as opposed to being attached to pendant organic groups.

REFERENCES:
patent: 4426508 (1984-01-01), Dromard et al.
Sohn, Jong Rack; Sam Gon Ryu and Jae Hwal Song. "Preparation of Modified Silica Catalyst with Benzenesulfo Groups". Journal of Molecular Catalysis. vol. 62, 1990, L1-L4.
Shea, K. J.; Loy, D. A.; Webster, O. "Aryl-Bridged Polysiulsesquioxanes." Chemistry of Materials, 1989, 1, 572-574.
Shea, K. J.; Loy, D. A.; Webster, O. "Arylsilsesquioxane Gels and Related Materials." New Hybrids of Organic and Inorganic Networks. J. Am. Chem. Soc. 1992, 114, 6700-6710.
Shea, K. J.; Loy, D. A.; Webster, O. "Aryl-Bridged Polysilsesquioxanes-New Microporous Materials." Mat. Res. Soc. Symp. Proc. vol. 180, 1990, pp. 975-980.
Shea, K. J.; Loy, D. A.; and Webster, O. "Aryl-Bridged Polysilsesquioxanes-A New Class of Microporous Materials"Polymeric Material Sci. Eng. vol. 63 1990, pp. 281-285.

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