Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
167 words
A biologically compatible non-toxic composition suitable, when mixed, as an in situ curing endodontic filling material which comprises two separately packaged components as follows: (a) a paste component comprising a low viscosity hydroxy terminated polydialkylsiloxane and a non-reactive hydroxy-free silicone oil diluent having a viscosity of from about 20 to 20,000 centistokes at 25° C. and comprising a polydialkylsiloxane; and (b) a liquid component comprising (i) the reaction product obtained by refluxing at ambient pressure and a temperature of about 150° to about 175° C. under a nitrogen blanket in the absence of air and moisture (1) a dialkyltindicarboxylate in which the alkyl groups have from 1 to about 8 carbon atoms and the carboxylate groups contain from about 10 to about 18 carbon atoms and (2) a tetraalkyl orthosilicate, in the molar ratio of 1 to 3; (ii) uncombined alkyl orthosilicate and (iii) a non-reactive hydroxy-free silicone oil diluent having a viscosity of from about 20 to 120,000 centistokes at 25° C. and comprising a polydialkylsiloxane.
Claim 2
Dependent Claim
167 words
A biologically compatible non-toxic composition suitable, when mixed, as an in situ curing endodontic filling material which comprises two separately packaged components as follows: (a) a paste component comprising a low viscosity hydroxy terminated polydialkylsiloxane and a non-reactive hydroxy-free silicone oil diluent having a viscosity of from about 20 to 20,000 centistokes at 25° C. and comprising a polydialkylsiloxane; and (b) a liquid component comprising (i) the reaction product obtained by refluxing at ambient pressure and a temperature of about 150° to about 175° C. under a nitrogen blanket in the absence of air and moisture (1) a dialkyltindicarboxylate in which the alkyl groups have from 1 to about 8 carbon atoms and the carboxylate groups contain from about 10 to about 18 carbon atoms and (2) a tetraalkyl orthosilicate, in the molar ratio of 1 to 3; (ii) uncombined alkyl orthosilicate and (iii) a non-reactive hydroxy-free silicone oil diluent having a viscosity of from about 20 to 120,000 centistokes at 25° C. and comprising a polydialkylsiloxane.
Claim 3
Dependent Claim
69 words
The material of claim 1 in which component (a) comprises about 20 to 70% by weight of hydroxy terminated polydialkylsiloxane and up to about 70% by weight based on the hydroxy terminated polydialkylsiloxane of silicone oil diluent and component (b) comprises about 5 to 30% by weight of said reaction product, about 40 to 60% by weight tetraalkyl orthosilicate and about 15 to 45% by weight silicone oil diluent.
Claim 4
Dependent Claim
69 words
The material of claim 2 in which component (a) comprises about 25 to 50% by weight of hydroxy terminated polydialkylsiloxane and about 50 to 70% by weight based on the hydroxy terminated polydialkylsiloxane of silicone oil diluent and component (b) comprises about 10 to 15% by weight of said reaction product, about 50 to 55% by weight tetraalkyl orthosilicate and about 30 to 35% by weight silicone oil diluent.
Claim 5
Dependent Claim
20 words
The material of claim 2 in which component (a) also contains at least one pigment and an X-ray opaquing agent.
Claim 6
Dependent Claim
14 words
The material of claim 4 in which the X-ray opaquing agent is barium sulfate.
Claim 7
Dependent Claim
14 words
The material of claim 4 in which zinc oxide is present as a pigment.
Claim 8
Dependent Claim
16 words
The material of claim 6 in which red iron oxide is also present as a pigment.
Claim 9
Dependent Claim
22 words
The material of claim 2 in which titanium dioxide is present as a pigment, and component (a) contains no silicone oil diluent.
Claim 10
Dependent Claim
25 words
The material of claim 8 containing an alkanoic acid of 8-12 carbon atoms as a retarder of initial setting of the total composition after mixing.
Claim 11
Dependent Claim
13 words
The material of claim 9 in which the alkanoic acid is neodecanoic acid.
Claim 12
Dependent Claim
16 words
The material of claim 10 in which red iron oxide is also present as a pigment.
Claim 13
Dependent Claim
24 words
The material of claim 1 packaged in kit form with component (a) in a compressible tube-type container and component (b) in a sealed bottle.