2,5-Dihydro-1H-1,2,4-triazol-2-yl radicals: Syntheses and properties
摘要:
A range of 2,5-dihydro-1H-1,2,4-triazol-2-yl radicals 2b-p has been prepared by dehydrogenation of the corresponding 4,5-dihydro-1H-1,2,4-triazoles 5b-p which have been synthesized using various methods. EPR, ENDOR and NMR studies have led to a complete analysis and full assignment of all hyperfine coupling constants. The pi-SOMO, having a node at the C(3) methine carbon, is mainly confined to the nitrogens of the five-membered ring, particularly to those of the hydrazyl moiety.
Solvent-free production method for producing acrylate pressure-sensitive adhesive substances
申请人:Langenbuch Jessica
公开号:US20070055032A1
公开(公告)日:2007-03-08
Method for the continuous polymerization of acrylic monomers to polyacrylates in an extruder and in the presence of polymerization regulators
Heat-Activable, Pressure-Sensitive Adhesive Mass
申请人:Husemann Marc
公开号:US20070287807A1
公开(公告)日:2007-12-13
The invention relates to a heat-activable pressure-sensitive adhesive. Provision is made for this heat-activable pressure-sensitive adhesive to comprise a polymer or copolymer formed from a monomer composition comprising at least 50% by weight of a compound of the formula CH
2
═CH(R
1
)(COOR
2
), wherein R
1
represents H or CH
3
and R
2
represents H or an alkyl chain having 1 to 30 carbon atoms, the polymer or copolymer having a static glass transition temperature of −10° C. to 120° C.; a temperature activation range of 15° C. or less; and
a molecular weight distribution M
w
/M
n
of 2.5 or less.