WASHINGTON, Sept. 1 -- Law firms assisted companies in the following recently announced transactions: * * * Kirkland & Ellis... ...advised Arclin, a TJC-backed company, regarding its definitive agreement to acquire the Aramids business from DuPont for approximately $1.8 billion. This acquisition, which includes the well-known Kevlar(R) and Nomex(R) brands, will expand Arclin's portfolio into new areas such as aerospace, electric vehicles, and personal protection. The transaction is expected t more ST