University of Akron

Lubrizol Advanced Materials, Inc.

Gabor Erdodi

Joseph P Kennedy

Naser Pourahmady

John Ta-Yuan Lai

Jungmee Kang

Anthony D Pajerski

Israel J Skoff

Jonathan J Bird

Christopher Swech

Mukerrem Cakmak

Umit G Makal

Baris Yalcin

Jeremy Lavern Daum

Darlene D Rota

Lisa A Blevins

Yutao Yang

Israel Skoff

Polymers are disclosed that incorporate portions of secondary or tertiary polyamide segments connected with polyisocyanates. These polymers have enhanced matting properties. The enhanced matting properties are from creating an inherently matt surface from the polymer without the use of any separate fine particle size matting additives. Conventional matting agents such as fine particle size silica usually results in loss of physical properties such as haze development and porosity in the coating from the matting agent. Composites and hybrids of these polymers and other polyamides, polyurethane with vinyl polymers (acrylates) are also disclosed and claimed.

Matted polyamide-pud

Copolymer dispersions containing polyamide segments in aqueous media form binders for coatings for various industrial and construction materials. The copolymers have a high percentage of amide linkages. The copolymers are linked into higher molecular weight species by reactions with polyisocyanates (which forms urea linkages if the other reactant is an amine or a urethane linkage if the other reactant is a hydroxyl group).

Aqueous copolymer coating compositions for industrial and construction applications

An improved process for forming polyamide dispersions in water utilizing carbon dioxide to facilitate dispersion of the polyamide is disclosed. The polyamides are generally below 30,000 or 40,000 g/mole molecular weight when dispersed, but can be chain extended with polyfunctional species such as polyisocyanates after dispersion. The dispersions are useful in coatings, adhesives, and inks. Composites and hybrids of these other polyamides with vinyl polymers are also disclosed and claimed.

Waterborne polyamide and their chain extension with isocyanates to form cationic waterborne polyureas dispersions

Water dispersible polyamides having carboxylic acid groups are disclosed. These are made by reacting polycarboxyl is acids or anhydrides thereof with amine containing monomer or an amide terminated polyamide under reaction conditions such that a few of the carboxylic acid groups are residual and can promote dispersion in water. These polyamides after dispersion can be chain extended to higher molecular weight polymers or can be terminally functionalized with reactive groups such as isocyanate, epoxy, vinyl, acetoacetonate, or silanol groups. Composites and hybrids of these polyamides with vinyl polymers are also disclosed and claimed.

Water dispersible polyamide building blocks

Polymers are disclosed that incorporate large portions of elastomeric polyamide oligomers connected with polyisocyanates. These polymers have enhanced properties over similar polyurethanes due to better hydrolysis resistance of polyamides over polyesters and better UV resistance of polyamides over polyethers. Polyurea linkages can also improve properties over polyurethane linkages. Composites and hybrids of these polymers and other polyamides with vinyl polymers are also disclosed and claimed.

Water-borne polyamide-urea dispersions

A polyurea or polyurea-urethane elastomer comprises a soft polymer segment and a hard polymer segment, wherein the hard polymer segment includes polyurea groups in combination with H-bond accepting chain extenders (HACEs) to reduce the flow temperature (T) while maintaining the excellent mechanical properties such that the resulting polyurea elatomer is rendered melt-processable.

Melt processible polyureas and polyurea-urethanes, method for the production thereof and products made therefrom

This invention relates to polymers made from low molecular weight polyamide oligomers and telechelic polyamides (including copolymers) containing N-alkylated amide groups in the backbone structure. The described telechelic polyamides are used as the soft segment in the described TPU. These telechelic polyamides are unique in that they have an unexpectedly low glass-transition (desirably 30 degrees C. or lower) which makes them suitable for further reaction and polymerization, allowing for the formation of the described TPU. The resulting TPU can provide improved hydrolytic, oxidative and/or thermal stability as well as improved adhesion to other materials, especially polar materials.

Polymers made from telechelic N-alkylated polyamides

Low glass transition temperature polyamide oligomers or telechelic polyamides are formed from monomers forming tertiary amide linkages. These polyamides can be used with co-reactants to form high molecular weight or crosslinked polymers with desirable polyamide properties.

Telechelic N-alkylated polyamide polymers and copolymers

A method for the synthesis of 1,3-di(chloropropyl)-5-tert-butyl benzene includes the steps of conducting Friedl-Crafts alkylation of 1,3-diisopropyl benzene by tert-butyl chloride in the presence of an alkylation catalyst to obtain 1-tert-butyl-3,5-diisopropylbenzene; peroxidizing the 1-tert-butyl-3,5-diisopropyl benzene by gaseous oxygen in the presence of a peroxidation catalyst in a basic solution to obtain 1,3-di(peroxypropyl)-5-tert-butylbenzene; reducing the 1,3-di(peroxypropyl)-5-tert-butylbenzene with a reducing agent to 1,3-di(hydroxylpropyl)-5-tert-butylbenzene; and chlorinating the 1,3-di(hydroxypropyl)-5-tert-butylbenzene to obtain 1,3-di(chloropropyl)-5-tert-butyl benzene.

Method for the synthesis of low cost initiators for telechelic polyisobutylenes

The present invention generally relates to implantable devices for producing insulin in diabetic animals and to methods of making same. Some embodiments include amphiphilic biomembranes for use in biological applications (e.g., as an alternative and/or supplemental insulin source). Some embodiments also include live insulin-producing cells contained within one or more amphiphilic membranes so as to prevent or diminish an immuno-response and/or rejection by the host.

Bio-artificial pancreas and a procedure for preparation of same

The present invention generally relates to polyisobutylene-based polyurethanes, polyureas and/or polyurethane-polyureas, and to a process for making such compounds. In one embodiment, the polyisobutylene-based polyurethanes, polyureas and/or polyurethane-polyureas also include at least one flexible hydrogen bond acceptor chain extender (HACE). In another embodiment, amine telechelic and hydroxyl telechelic polyisobutylenes are utilized with at least one at least one flexible hydrogen bond acceptor chain extender (HACE) to produce polyurethane-polyureas having various desired mechanical properties in combination with various desired oxidative/hydrolytic stability.

Polyisobutylene-based polyurethanes, polyureas and/or polyurethane-polyureas and method for making same

The present invention relates generally to thermoplastic amphiphilic networks and/or co-networks. In one embodiment, the present invention relates to thermoplastic (TP) amphiphilic co-networks (APCNs) and the preparation of membranes from such APCNs. In another embodiment, the present invention relates to an amphiphilic network comprising at least one hydrophilic polymer-derived portion, at least one hydrophobic polymer-derived portion and at least one thermoplastic polymer-derived portion. In still another embodiment, the present invention relates to thermoplastic amphiphilic co-networks prepared by combining the chemistries of APCNs and polyurethanes (PUs) and to the preparation of membranes therefrom.

Thermoplastic amphiphilic co-networks

The present invention generally relates to implantable devices for producing insulin in diabetic animals. Some embodiments include amphiphilic biomembranes for use in biological applications (e.g., as an alternative and/or supplemental insulin source). Some embodiments also include live insulin-producing cells contained within one or more amphiphilic membranes so as to prevent or diminish an immuno-response and/or rejection by the host.

Implantable devices for producing insulin

The present invention generally relates to amphiphilic grafts and co-networks made from at least one hydrophilic polymer and at least one hydrophobic polymer, and to processes for preparing such amphiphilic grafts and co-networks. In another embodiment, the present invention relates to amphiphilic co-networks formed from the combination of at least one polysiloxane and at least one polyacrylamide. In yet another embodiment, the present invention relates to amphiphilic co-networks formed from the combination of at least one polysiloxane, at least one polyacrylamide and at least one crosslinking agent.

Growing community of inventors

Macedonia, OH, United States of America

Gabor Erdodi