Results 111 to 120 of about 319,868 (397)

Fire and heat resistant laminating resins based on malemeido and citraconimido substituted 1 -2,4- and -2,6- diaminobenzenes [PDF]

open access: yes, 1987
A novel class of fire and heat resistant bisimide resins prepared by thermal polymerization of maleimido or citraconimido substituted 1-(dialkox phosphonyl) methyl-2-4 and -2,6-diamino benzenes was presented.
Kourtides, Demetrius A.   +1 more
core   +1 more source

The Chemistry and Biology of the Tetrodotoxin Natural Product Family

open access: yesAngewandte Chemie International Edition, Accepted Article.
Tetrodotoxin is a neurotoxic marine alkaloid, first isolated in 1909 from pufferfish and named after the biological order tetraodontiformes. Since its structural elucidation in 1964, it has attracted the interest of synthetic organic chemists due to its exceptional polarity, complex architecture, and important biological activity.
Benedikt Nißl   +6 more
wiley   +1 more source

ROUGHNESS OF ESTERIFIED EASTERN COTTONWOOD

open access: yesBioResources, 2010
The aim of this study was to investigate the effect of esterification via acetic or propionic anhydride on the surface roughness of eastern cottonwood. Eastern cottonwood (Populous deltoides) was esterified by using acetic or propionic anhydride without ...
Mohammad Reza M. Farahani   +1 more
doaj  

Effect of Wood Acetylation with Vinyl Acetate and Acetic Anhydride on the Properties of Wood-Plastic Composites

open access: yes, 2012
Chemical modifications of Scots pine (Pinus sylvestris) wood flour were performed with vinyl acetate (VA) and acetic anhydride (AA) in the presence of potassium carbonate as a catalyst.
N. Özmen   +4 more
semanticscholar   +1 more source

New Condensation polyimides containing 1,1,1-triaryl-2,2,2-trifluoroethane structures [PDF]

open access: yes, 1989
The invention relates to a condensation polyimide containing a 1,1,1-triaryl 2,2,2-trifluoroethane structure and other related condensation polyimides.
Alston, William B., Gratz, Roy F.
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

Facile O-atom insertion into C-C and C-H bonds by a trinuclear copper complex designed to harness a singlet oxene [PDF]

open access: yes, 2007
Two trinuclear copper [CuICuICuI(L)]1+ complexes have been prepared with the multidentate ligands (L) 3,3'-(1,4-diazepane-1,4-diyl)bis(1-((2-(dimethylamino)ethyl)(methyl)amino)propan-2-ol) (7-Me) and (3,3'-(1,4-diazepane-1,4-diyl)bis(1-((2-(diethylamino)
Chan   +13 more
core   +4 more sources

Phosphorus-containing bisimide resins [PDF]

open access: yes, 1981
The production of fire-resistant resins particularly useful for making laminates with inorganic fibers such as graphite fibers is discussed. The resins are by (1) condensation of an ethylenically unsaturated cyclic anhydride with a bis(diaminophenyl ...
Fohlen, G. M.   +2 more
core   +1 more source

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