Modification of Wood with Boric Acid and Tolylene Diisocyanate.
نویسندگان
چکیده
منابع مشابه
study of dna interaction with ethylenediaminetetraacetic acid and sesamol food additives
برهمکنش dnaتیموس گاوی طبیعی (ct-dna) با اتیلن دی آمین تترااستات (edta)در بافرtris-hcl با 8/7 ph ( دراین ph،edta به نمک دی سدیم تبدیل می شود) وسسامول در بافر tris-hcl با4/7 ph مورد بررسی قرار گرفته است. edta و سسامول استفاده فراوانی در تکنولوژی غذایی و صنعت شیمیایی دارند. مدل اتصال dna مربوط بهedta بوسیله اسپکتروفتومتری جذب، دورنگ نمایی حلقوی(cd)، ویسکومتری وژل الکتروفورز بررسی شده است. طیفuv ...
15 صفحه اولaccelerated autocondensation of quebracho tannin wood adhesive by boric acid
quebracho tannin wood adhesive in non formaldehyde approach has low autocondensation rate and needs more press time than formaldehyde-based wood adhesives to produce wood composites. in this study, boric acid was used to increase autocondensation rate of quebracho tannin adhesive to make poplar plywood. the main ingredients of the adhesives include quebracho tannin, naoh, hexamine, boric acid a...
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Boric acid and its chemical relatives are pesticides that are derived from the element boron. Boron rarely occurs alone and is typically found in combination with other elements; common combinations are boric acid or borates.1 Unlike many pesticides which are synthetic compounds,2 boric acid and related pesticides are naturally occurring compounds.1 Boron compounds are widely found in rivers, s...
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Tab. 1. NMR-Spektren substituierter Acetanilide a . a In CDC13 , 60 MHz. b Die Zuordnung erfolgte unter der plausiblen Annahme, daß in der eis-Verbindung der Methylteil der CH3CO-Gruppe oberhalb der aromatischen Ringebene zu liegen kommt, ihr NMR-Signal im Vergleich zur fransVerbindung also nach höherem Feld verschoben sein sollte. c Im Falle des cts-2.6-Diisopropyl-acetanilides zeigen die iso-...
متن کاملTermite resistance of wood treated with copper (II) compounds derived from tri- and dialkylamine-boric acid complexes
The objective of this investigation was to evaluate the toxicity to termites and the leaching stability of copper compounds derived from triand dioctylamineboric acid complexes for protecting wood against termite at tack . Water inso luble copper Nmethyldioctylamine or copper N-dioctylamine and copper borate were precipitated in wood by the reaction of N-methyldioctylamine or N-dioctylamine-bor...
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ژورنال
عنوان ژورنال: Wood Preservation
سال: 2001
ISSN: 0287-9255,1884-0116
DOI: 10.5990/jwpa.27.11