Results 51 to 60 of about 23,237 (180)

Kinetics of the reactions of the acid anhydrides with aromatic amines in aprotic solvents [PDF]

open access: yes
Work has revealed that diamine derivatives of diphenylmethane (IV), diphenyl ether (V), benzophenone (IV), fluorene (VII), and fluorenone (VIII) polymerizations with pyromellitic dianhydride in DMA were dependent on the basicity of the amine compound ...
Mason, J. G., Sugg, E.
core   +1 more source

Processable polyimide adhesive and matrix composite resin [PDF]

open access: yes, 1990
A high temperature polyimide composition prepared by reacting 4,4'-isophthaloyldiphthalic anhydride with metaphenylenediamine is employed to prepare matrix resins, adhesives, films, coatings, moldings, and laminates, especially those showing enhanced ...
Pratt, J. Richard   +2 more
core   +1 more source

Hypervelocity impact survivability experiments for carbonaceous impactors [PDF]

open access: yes
We performed a series of hypervelocity impact experiments using carbon-bearing impactors (diamond, graphite, fullerenes, phthalic acid crystals, and Murchison meteorite) into Al plate at velocities between 4.2 and 6.1 km/s.
Bada, Jeffrey   +6 more
core   +1 more source

Polyimides with improved compression moldability [PDF]

open access: yes, 1993
The semicrystalline polyimide prepared by reaction of 3,3',4,4' benzophenonetetracarboxylic (BTDA) and 1,3-bis(4-aminophenoxy 4' benzoyl) benzene (1,3-BABB) is modified so that it can be more readily processed to form adhesive bonds, moldings, and ...
Beltz, Mark W.   +2 more
core   +1 more source

Background information and biorefinery status, potential and Sustainability: Task 2.1.2 Market and Consumers; Carbohydrates [PDF]

open access: yes
This report was produced to give an overview of present and future market for biorefinery products based on carbohydrates. Various studies show that there is a wealth of possible molecules and products that can be produced from carbohydrates ...
Annevelink, E.   +2 more
core   +1 more source

Hierarchical Structure with Highly Ordered Macroporous-Mesoporous Metal-Organic Frameworks as Dual Function for CO2 Fixation. [PDF]

open access: yes, 2019
As a major greenhouse gas, the continuous increase of carbon dioxide (CO2) in the atmosphere has caused serious environmental problems, although CO2 is also an abundant, inexpensive, and nontoxic carbon source.
Chu, Junmei   +8 more
core   +1 more source

Study of improved resins for advanced supersonic technology composites. Part 1: Heteroaromatic polymers containing ether groups. Part 2: Curing chemistry of aromatic polymers and composite studies [PDF]

open access: yes
Fourteen ether-containing, aromatic dianhydrides have been synthesized from N-phenyl-3 or 4-nitrophthalimide and various bisphenols. The process involves nucleophilic displacement of activated nitro groups with bisphenolate ions.
Hillig, W. B.   +2 more
core   +1 more source

High temperature epoxycarborane adhesives Final report [PDF]

open access: yes
Carborane adhesive bonding properties and lap shear strength of metal to metal ...
Barnes, R., Hughes, E.
core   +1 more source

Polyimide molding powder, coating, adhesive, and matrix resin [PDF]

open access: yes, 1992
The invention is a polyimide prepared from 3,4'-oxydianiline (3,4'-ODA) and 4,4'-oxydiphthalic anhydride (ODPA), in 2-methoxyethyl ether (diglyme). The polymer was prepared in ultra high molecular weight and in a controlled molecular weight form which ...
Progar, Donald J., St.clair, Terry L.
core   +1 more source

Atmospheric Research and Monitoring Study of Hazardous Substances [PDF]

open access: yes, 1985
Hazardous Waste Research and Information Center Illinois Department of Energy and Natural ...
Gatz, Donald F., Sweet, Clyde W.
core  

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