摘要:
The invention relates to the use of aryl iodonium- and/or aryl sulfonium salts of the tetrakis (perfluoro-t-butyloxy) aluminate anion of the following formula (I) as photocleavable and/or radically cleavable cationic initiators in the polymerization of cationically polymerizable monomers.
摘要:
The present disclosure is directed, in part, to a curable composition, a method for augmenting a structure in a patient with a resorbable biocompatible polymer, and a biodegradable, resorbable implant comprising a biocompatible copolymer. An exemplary embodiment of the curable composition comprises (a) 60 wt.% to 95 wt.% of one or more vinyl ester monomers and/or vinylcarbonate monomers, wherein said one or more vinyl ester monomers and/or vinylcarbonate monomers are respectively selected from compounds of the general formulas (I) and (II) below:
wherein n, m R 1 and R 2 have the meaning defined herein; (b) 0.1 to 40 wt.% of one or more multifun ctional thiols; and (c) 0 to 10 wt.% of a biocompatible polymerization initiator.
摘要:
The invention relates to a polymerisable composition for the production of biodegradable, biocompatible, cross-linked polymers on the basis of polyvinyl alcohol, comprising: 5-100 % by weight vinyl ester monomer(s) of general formula (I), (II) or (III), in which X represents oxygen, sulphur, nitrogen or phosphor, n = 1-1000, at least 20% of n ≥2, R1 is selected from hydrogen, unbranched, branched or cyclic, saturated or unsaturated, n-valent hydrocarbon groups comprising 1-30 carbon atoms, which optionally have heteroatoms and are optionally substituted by substituents selected from -OH, -COOH, -CN, -CHO and =O and from n-valent groups of biodegradable, biocompatible oligomers and polymers, m = 1-5, R2 is selected from hydrogen, -OH, =O and the options for R1 and R3 is selected from hydrogen, -OH and the options for R1; 0-50 % by weight of ethylenically unsaturated comonomers; 0-10 % by weight of polymerisation initiator(s); and 0-95 % by weight of solvents.
摘要:
Disclosed is a radically polymerizable dental material containing at least one compound of formula (I). Preferably, the material additionally contains a radically polymerizable monomer, a free-radical-polymerization initiator, and filler. The disclosed dental material is characterized by low polymerization contraction stress.