Segetis, Inc.

Gfbiochemicals Limited

Gfbiochemicals IP Assets B.v.

Vivek Badarinarayana

Brian Daniel Mullen

Cora Leibig

Marc Davis Scholten

Marc D Scholten

Feng Jing

Sergey A Selifonov

Tara Jane Mullen

Douglas Wicks

Matthew John Tjosaas

Steven A Donen

Dorie Janine Yontz

Friederike Stollmaier

Steven Donen

Chunyong Wu

Friederike Theresia Stollmaier

Marc David Rodwogin

Andrew J Louwagie

Cora M Leibig

Eric S Hall

Matthew J Tjossas

Tara J Mullen

Sergey Selifonov

The invention describes processes to selectively remove or reduce the mineral acid content substantially from compositions comprising a solvent and levulinic acid, wherein the levulinic acid was derived from the reaction between various biomass materials and a mineral acid or an organic acid catalyst.

Method for removing mineral acid from levulinic acid

The invention describes methods of preparation and compositions of plasticizers. The plasticizers include at least 2 alkyl ketal ester moieties and have a molecular weight of greater than 300. In one aspect, the alkyl ketal ester moieties are levulinic ester ketals. Certain compositions contain at least one of an antioxidant, a UV stabilizer, a thermal stabilizer or mixtures thereof, present in the composition from about 0.01 to about 5.0 percent by weight of the total composition.

Stabilized levulinic ester ketals

A method for producing a product that comprises glycerol ketal of ethyl levulinate or propylene glycol ketal of ethyl levulinate comprises reacting either glycerol or propylene glycol with ethyl levulinate in the presence of a homogenous or heterogeneous catalyst system in a reactor system. The ethyl levulinate and either glycerol or propylene glycol are heated to remove water, polyol, and excess ethyl levulinate. The excess ethyl levulinate and polyol is recycled back to the reactor. The product is distilled in a specific fashion and optionally treated by means of a stabilizing agent or acid species removal bed, to obtain a composition comprising glycerol ketal of ethyl levulinate or propylene glycol ketal of ethyl levulinate wherein the composition comprises less than or equal to about 2 wt % contaminants.

Methods for the manufacture of acetals and ketals, and the acetals and ketals produced thereby

Disclosed herein is a polyketal adduct obtained by forming an ester between a hydrocarbon polyol and a ketocarboxylic acid to produce an intermediate polyketocarboxylic ester. The intermediate polyketocarboxylic ester can be purified via crystallization to achieve purities of greater than 99.0% and then ketalized to produce the polyketal adduct, which can be used in polymer compositions. The polyketal adduct I is obtained at high purity and at high yield.

Polyketal adducts, methods of manufacture and uses thereof

The present disclosure relates to the preparation of acrylate, alkacrylate, allyl, and polycarbonate derivatives of hydroxy ketal esters, and uses thereof.

Ketal ester derivatives

Various esterified alkyl ketal ester or hydroxyalkyl ketal ester products are useful as components of organic polymer compositions. The ketal esters are produced in certain transesterifications between alkyl ketal esters and/or hydroxyalkyl ketal esters and polyols, aminoalcohols, polyamines, and/or polycarboxylic acids. The products are excellent plasticizers for a variety of organic polymers, notable poly(vinyl chloride) plastisols. The products are also very good lubricants for many lubrication applications.

Ketal compounds and uses thereof

An ionic polymer of formula VI wherein each b=0 or 1; X is hydrogen, 1/z of a metal ion of charge z, a protonated nitrogen base, or a tetrasubstituted organic ammonium compound; the molar ratio of q:r:s:t=(100-0.1):(0-99.9):(0-50):(0-30); R, Rand Rare hydrogen or Calkyl; R, R, Rand Rare hydrogen, Calkyl or F, wherein F is a functional group that imparts a property to polymer VI, at least one and no more than two of R, R, Rand Rare F and F is the same or different; G is a single bond or a Chydrocarbyl group; and for each instance of t when t is not zero, c=0-5 and d=0-5, provided that c+d=1-5, and wherein q, r and s as present in c are independent of any other value of q, r and s.

Ionic polymers, method of manufacture, and uses thereof

Growing community of inventors

St. Louis Park, MN, United States of America

Vivek Badarinarayana