Glycerol polycarbonate polyesters and other polyhydroxylated...

Details Glycerol polycarbonate polyesters and other polyhydroxylated... Glycerol polycarbonate polyesters and other polyhydroxylated...

2011-04-19

2011-04-19

Boykin, Terressa M (Department: 1765)

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

Synthetic resins

From reactant having a halogen atom or oxygen single bonded...

C528S176000, C528S296000

Reexamination Certificate

active

07928183

ABSTRACT:
The invention relates to polyesters containing at least one partly acylated polyhydroxylated compound belonging the group consisting of glycerol polycarbonates, specific polyglycerols, [(a-hydroxymethyl) oxyethylene/(a-hydroxymethyl)ethylene carbonate] copolymers, [a -hydroxymethyl) oxyethylene/(a-hydroxymethyl)ethylene carbonate] copolymers, and [a -alkyl) oxyethylene/(a-hydroxyalkyl) oxyethylene] copolymers. The invention also relates to methods for acylating, at least partly, the polyhydroxylated compounds. The polyesters of this invention are applicable to the technical fields relating to engine and industrial lubricants, greases, hydraulic fluids, metal deformation and processing lubricants, stripping and mold dressing products, oil prospecting, mines, tunnel borers, cosmetics, detergency, inks, textile coatings and papers, to the field of food products, to the protection of wood as synthesis intermediates.

REFERENCES:
patent: 3637774 (1972-01-01), Babayan et al.
patent: 5721305 (1998-02-01), Eshuis et al.
William C. Ray, III et al. Polycarbonate and Poly(carbonate-ester)s Synthesized from Biocompatible Building Blocks of Glycerol and Lactic Acid Departments of Chemistry, Ophthalmology, and Biomedical Engineering, Macromolecules, 2003, 36 (10), pp. 3557-3562.

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