Virginia Tech Intellectual Properties, Inc.

Sabic Global Technologies B.v.

Bar-ilan University

Shpp Global Technologies B.v.

Waves Audio Ltd.

Guoliang Liu

Roy Ray Odle

Timothy Edward Long

Ke Cao

Joseph M Dennis

Assad U Khan

Yi Guo

Meir Shaashua

Adi Levi

Gabriel Zeltzer

Gavriel Speyer

Vlada Artel

Doron Naveh

Zhen Xu

Gehui Liu

Alan Roger Esker

In one aspect, the disclosure relates to azide-containing poly(ether imide) polymers (PEIs; N-PEI-N) synthesized via a heterogenous diazotizationazidation reaction. In one aspect, the azide-containing PEIs can be solution-cast into films and then thermally crosslinked. In a further aspect, the crosslinked PEIs (X-PEIs) exhibit superior thermal and mechanical properties. In a still further aspect, X-PEIs display outstanding resistance to classical solvents for conventional PEI, including THF, DCM, chloroform, DMF, and NMP. In another aspect, with an initial number average molecular weight (M) of 8.9 kDa, the disclosed azide-containing PEIs have a high crosslinking density and thus possess desirable thermal, mechanical, and solvent resistance properties.

Solvent-resistant self-crosslinked poly(ether imide)s

A method of making an article comprising one or more layers of plasmonic nanoparticles located between opposing layers of dielectric materials and an article comprising one or more layers of plasmonic nanoparticles located between opposing layers of dielectric materials.

Plasmonic nanoparticle layers with controlled orientation

A polyimide oligomer of formula (1a), (1b), a copolymer thereof, or a combination thereof wherein each Gis independently the same or different, and is a cation group; each Gis independently the same or different, and is an anion group; each D is independently the same or different, and is a single bond or Cdivalent hydrocarbon group; each V is independently the same or different, and is a tetravalent Chydrocarbon group; each R is independently the same or different, and is a Cdivalent hydrocarbon group; each n is independently the same or different, and is 1 to 1000, provided that the total of all values of n is greater than 4; and t is 2 to 1000.

Polyetherimide from metal free ionomers

A membrane hetero-structure includes a polymer layer and a single-layer or multi-layer graphene sheet disposed on the polymer layer. The membrane hetero-structure is tensioned across a frame having an opening such that both the polymer layer and the graphene sheet extend across the opening. An optional rigid member is provided in a center of the membrane to be spaced apart from edges of the opening. The assembly of the frame and membrane hetero-structure forms an electrostatically driven micro-electro-mechanical system (MEMS) or sound generation and recording apparatus. In one instance, when a voltage signal is applied between an electrode layer parallel to the membrane and contacts on the frame that are electrically connected to the graphene sheet, the membrane hetero-structure is actuated.

Nanocomposite graphene polymer membrane assembly, and manufacturing method thereof

A ureido-pyrimidinone oligomer having the formula (I) wherein each Z' is independently the same or different, and is a substituted or unsubstituted straight or branched chain Calkyl, each Ris independently the same or different, and is a substituted or unsubstituted straight or branched chain Calkylene, substituted or unsubstituted Calkenylene, substituted or unsubstituted Ccycloalkylene, or substituted or unsubstituted Carylene, each V is independently the same or different, and is a substituted or unsubstituted tetravalent Chydrocarbon group, each R is independently the same or different, and is a substituted or unsubstituted Cdivalent hydrocarbon group; and n has an average value of 2 to 50, preferably 3 to 40, more preferably 5 to 30. 

Telechelic poly(imide) oligomers, methods of manufacture, and uses thereof

A polyimide oligomer of the formula wherein G is a group having a valence of t, each R is independently a Cdivalent bridging group, a Calkylene-X, or a Carylene-X wherein &#x2014;X is &#x2014;O-M', &#x2014;C(O)O-M&#x2032;, &#x2014;OC(O)O-M&#x2032;, &#x2014;S-M&#x2032;, &#x2014;S(O)-M&#x2032;, &#x2014;S(O)-M&#x2032;, &#x2014;OS(O)-M&#x2032;, or &#x2014;OP(O)-M&#x2032; wherein each M&#x2032; is independently Li, Na, K, Cs, Mg, Ca, Sr, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, B, Al, Ga, In, Ge, Sn, Pb, As, or Sb, provided that at least one R is Calkylene-X or Carylene-X, q is 0 or 1, m is 0 or 1, d is 0 or 1, p is 1 or 2, t is 1 to 6, and each n is independently 1 to 1,000, the total of all values of n is greater than 4, the polyimide oligomer is thermoplastic, and Q, M, D, and V are as provided herein.

Polyimide and polyetherimide from metal containing oligomers

Growing community of inventors

Blacksburg, VA, United States of America

Guoliang Liu