Composite edge for producing double or multiple pane insulation glass or solar modules
View Patent ↗A sealing compound includes a polymer modified with special, reactive groups and has the following overall composition: a) 30-60 wt. %, preferably 40-50 wt. %, olefinic polymers, Mn 400-600,000 D, preferably 5,000-300,000 D b) 2-35 wt. %, preferably 5-25 wt. %, modified polymer c) 5-40 wt. %, preferably 10-30 wt. %, fine-particle, inert fillers d) 5-25 wt. %, preferably 10-15 wt. %, desiccants and water scavengers 0-3 wt. % aging resistors, in particular anti-oxidants or UV stabilizers.
1. A pumpable sealant for forming a moisture vapor barrier between a first substrate and a second substrate, the sealant comprising:
an olefinic polymer;
at least one of a silane modified APAO and a silane modified polyisobutylene;
at least one filler;
a carbon black wherein the carbon black is included in an amount from about 5% to about 20% by weight of the total composition;
at least one of a water scavenger and a desiccant; and
at least one aging resistor, and
wherein the carbon black is oxidatively post treated by a furnace process and has a primary particle size of about 50 nm to about 60 nm,
wherein the pumpable sealant is configured to be pumped directly onto at least one of the first and second substrates to form the moisture vapor barrier and the pumpable sealant has a volume resistivity of greater than 1×10 10 ohms·cm.
2. The pumpable sealant of claim 1 wherein the olefinic polymer includes a polyisobutylene in an amount from about 32% to about 60% by weight of the total composition, the at least one of the silane modified APAO and the silane modified polyisobutylene is included in an amount from about 2% to about 35% by weight of the total composition, the filler is included in an amount from about 5% to about 47% by weight of the total composition, the at least one of the water scavenger and the desiccant is included in an amount from about 5% to about 25% by weight of the total composition, and the aging resistor is included in an amount from 0.1% to about 3% by weight of the total composition.
3. The pumpable sealant of claim 1 wherein the olefinic polymer includes a polyisobutylene in an amount of about 42% by weight of the total composition, the at least one of the silane modified APAO and the silane modified polyisobutylene is included in an amount of about 12% by weight of the total composition, the filler is included in an amount of about 10% by weight of the total composition, the carbon black is included in an amount of about 20% by weight of the total composition, the at least one of the water scavenger and the desiccant is included in an amount of about 15% by weight of the total composition, and the aging resistor is included in an amount of about 1% by weight of the total composition.
4. The pumpable sealant of claim 1 wherein the olefinic polymer includes a polyisobutylene in an amount of about 40% by weight of the total composition, the at least one of the silane modified APAO and the silane modified polyisobutylene is included in an amount of about 10% by weight of the total composition, the filler is included in an amount of about 20% by weight of the total composition, the carbon black is included in an amount of about 17% by weight of the total composition, the at least one of the water scavenger and the desiccant is included in an amount of about 12% by weight of the total composition, and the aging resistor is included in an amount of about 1% by weight of the total composition.
5. The pumpable sealant of claim 1 wherein the olefinic polymer includes a polyisobutylene in an amount from about 30% to about 50% of the total composition.
6. The pumpable sealant of claim 1 wherein the at least one of the silane modified APAO and the silane modified polyisobutylene is included in an amount from about 5% to about 25% of the total composition.
7. The pumpable sealant of claim 1 wherein the filler is present in the sealant composition relative to the olefinic polymers in a ratio of approximately 1:1.35 to approximately 1:1.8.
8. The pumpable sealant of claim 1 wherein the at least one of the water scavenger and the desiccant is a molecular sieve included in an amount from about 5% to about 15% of the total composition.
9. The pumpable sealant of claim 1 wherein the pumpable sealant is oxidatively stable after 4000 hrs of exposure to temperatures greater than 110° C.
10. A sealant disposed between a first substrate having a hydroxyl group and a second substrate having a hydroxyl group, the sealant configured to inhibit the transmission of moisture to a moisture sensitive material disposed between the first and second substrates, the sealant comprising:
an olefinic polymers or combinations thereof;
at least one of a silane modified APAO and a silane modified polyisobutylene;
a carbon black present in an amount from about 5% to about 20% by weight;
a filler;
at least one of a water scavenger and a desiccant; and
an aging resistor, and
wherein the carbon black is oxidatively post treated by a furnace process and has a primary particle size of about 50 nm to about 60 nm,
wherein the at least one of a silane modified APAO and a silane modified polyisobutylene includes reactive group that chemically bonds with the reactive group of the first and second substrates to form a bond that is greater than the cohesive strength of the sealant and wherein the sealant has a volume resistivity of greater than 1×10 10 ohms·cm.
11. The sealant of claim 10 wherein the sealant is oxidatively stable after 4000 hrs of exposure to temperatures greater than 110° C.
12. The sealant of claim 10 wherein the sealant is configured to be pumped directly onto at least one of the first and second substrates to form a moisture vapor barrier between the first and second substrates, and wherein the bond and the sealant produce a seal that is substantially stable to external influences of high temperature and thermal cycling.