The imports of polycarboxylic acid
and anhydrides increased by 45.88 percent, from $27.551 million to $40.194 million whereas the imports of heterocyclic compounds with nitrogen hetero-atom(s) also increased by 25.18 percent, from $26.212 million to $38.814 million.
With the aim in mind of developing novel drug carriers, in this study, a new porous MOF, [[[Dy.sub.2][([H.sub.2]O).sub.3][(SDBA).sub.3]] [(DMA).sub.6]] (1, [H.sub.2]SDBA = 4,4'-sulfonyldibenzoic acid; Figure 1), with uncoordinated O donor sites has been fabricated using a bent polycarboxylic acid
organic linker under the solvothermal condition.
* Aliphatic polycarboxylic acid
, polymer with alicyclic polyhydric alcohol and polyoxyalkylene (generic) when used as an additive for a polymer.
Naphthalene water reducing agent and polycarboxylic acid
water reducing agent were applied to study the compatibility of accelerator for water reducing agent.
Citric acid (2-hydroxy-1,2,3-propanetricarboxylic acid) is an organic polycarboxylic acid
containing three carboxyl groups.
Paul, MN, has patented a solid detergent composition comprising a first alkalinity source consisting essentially of at least one alkali metal silicate; at least one saccharide comprising sucrose, fructose, inulin, lactulose, maltose or combinations thereof or at least one sugar alcohol comprising sorbitol; at least one polycarboxylic acid
polymer; water; optionally a secondary alkalinity source comprised of sodium carbonate; and a nonionic surfactant.
Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analysis has been used to characterize the reaction of polycarboxylic acid
reagents with cellulosc.
Drimagen E2R (anionic levelling agent, aromatic polyether sulphonate) Ladipur RSK (anionic detergent, based on polycarboxylic acid
) were received from Clariant Pakistan.
Phosphino polycarboxylic acid
, diethylenetriamine penta (methylphosphonic acid), ethylenediamine-tetra (methylene phosphonic acid) etc.
However, FTIR spectroscopy is only suitable for semi-quantitative analysis, since the loss of the carbonyl group absorption band during the neutralization overlaps with the formation of the asymmetric COO- salt band and the absorption bands of the polycarboxylic acid
overlap with the strong absorption bands of water at 1642 and 1705 [cm.sup.-1] .
The patent describes the use of sorbitol (easily derived from starch) as the polyhydric alcohol and the use of succinic acid anhydride as the polycarboxylic acid
. Hajek (13) described the use of sorbitol and xylitol in alkyd resin synthesis, whereas, Bagchi and Malakar (14) described the partial replacement of conventional polyols (i.e., glycerol and pentaerythritol) by sorbitol.
Dai, "Durable hydrophobic cellulose fabric prepared with polycarboxylic acid
catalyzed silica sol," Industrial and Engineering Chemistry Research, vol.