Low-density sealing mass, ground mass and method for...

Details Low-density sealing mass, ground mass and method for... Low-density sealing mass, ground mass and method for...

2007-08-28

2007-08-28

Truong, Duc (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C525S537000, C528S373000, C528S480000

Reexamination Certificate

active

10472266

ABSTRACT:
The invention relates to a sealing mass with low density and improved tensile strength on the basis of sulfur-containing polymers such as on the basis of polysulfide, polyether or/and polytioether that has a density of not more than 1.3 g/cm3according to ISO 2781 and a tensile strength of at least 1.9 N/mm2according to ISO 37 after curing. The invention further relates to a ground mass based on sulfur-containing polymers for producing a sealing mass that comprises at least one long-chain linear polymer and at least one short-chain branched polymer having a content in trifunctional molecules, or/and at least one multifunctional cross-linker with a number of functional groups n≧3. The invention further relates to a method for producing a sealing mass according to which at least one base polymer is mixed with at least one adhesion promoter and the at least one light filler, especially hollow filler, is added, a vacuum with a remaining pressure of less than 50 mbar being maintained during incorporation of the light filler.

REFERENCES:
patent: 5663219 (1997-09-01), Potts et al.
patent: 0 268 837 (1988-06-01), None
patent: WO-98 39365 (1998-09-01), None

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