In the period of 1998--2002, the country's production of phthalic
anhydride (PA) rose 13.8% annually from 74,994 tons in 1998 to 126,000 tons in 2002.
Hydrolyzed styrene-maleic
anhydride resins perform as classic anionic polymeric surfactants, combining hydrophobic (styrene) and hydrophilic (carboxylic acid ammonium salt) structural units along a common backbone.
The global phthalic
anhydride (PA) market is touted to register a spiraling growth at a significant CAGR over the estimated period (2017-2023).
In March, MFG Chemical has acquired Texas, US-based maleic
anhydride derivatives manufacturer Gulf Bayport Chemicals LP.
The seized drugs comprised 1826 Kg Hashish, 40 Kg Opium, 5.5 Kg Amphetamine, 5.5 Kg Heroin, 200 Gram Cocaine and 2520 Liters Acetic
Anhydride. ANF Quetta seized mega cache of drugs comprising 1792 Kg Hashish, 2520 liters Acetic
Anhydride and 40 Kg Opium in five separate intelligence based operations conducted at Qilla Abdullah, Panjgur, Kech and Quetta.
The operation focuses on identification, monitoring and seizure of consignments of all illicit precursor chemicals especially Acetic
Anhydride, Acetyl Chloride, Acetic Acid and Ammonium Chloride, being transported to Afghanistan.
Acetic
anhydride is a highly sensitive dual-use chemical which is the main ingredient for manufacturing highly-explosive devices as well as for preparing narcotics substances, especially heroin.
While a small portion of the consignment around 124 plastic cans comprised summer fluid, major part of the consignment around 776 plastics cans contained the dangerous chemical, Acetic
Anhydride.
According to details, the acetic
anhydride, a main ingredient for preparing narcotics substance as well as use in making highly explosives by the terrorist outfits was shipped from Poland for Peshawar based importer.
Since no one turned up for clearance, physical examination of the consignment was carried out on January 31, in the presence of representatives of terminal operator and independent surveyors, which led to the recovery of huge quantity of dual-use precursor 'Acetic
Anhydride' 15,520 liters stuffed in more than 700 plastic cans worth $1.5 million.
Key statement: The present invention relates to a tire having as a member a rubber composition comprising (a) 100 mass parts of a rubber component comprising at least one selected from a natural rubber and a diene base synthetic rubber, (b) silica having a nitrogen-absorbing specific surface area (N2SA) of 180 to 270 m2/g and 0.1 to 10.0 mass parts of (c) a partial ester compound of maleic
anhydride and a (poly)oxypropylene derivative described above.