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Pointing compound
   
Document Number
US Patent 4203881
Issued Date
May 20, 1980
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Abstract
Disclosed is a pointing compound for use in making repairs particularly to road surfaces. In accordance with the invention, the pointing compound comprises a mixture of mildly air blown bitumen, at least 25% by weight of polyolefin material selected from polyethylene, polypropylene and copolymers thereof and 10 to 40% by weight of a high boiling aromatic mineral oil. The amorphous polyolefin material preferably has a molecular weight ranging from 25,000 to 30,000 and a viscosity at 170.degree. C. of 2,000 to 5,000 cp.
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Number of Claims:
7
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Published
May 20, 1980
Application Number
05/947,060
Filed
September 29, 1978
US Classification
524/62  
Int'l Classification
E01C   11/10   (20060101)   E01C   11/02   (20060101)  
Priority Data
Oct 04, 1977 [AT] 7058/77
USPTO Field of Search
260/23H   260/28.5A  
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5703148 - Asphalt-polymer compositions, process for making same and uses thereof - Owned by Total Raffinage Distribution S.A. (Puteaux,FR)

An asphalt-polymer composition containing: a) at least 25 to 97 wt % of an asphalt, b) at least 1 to 25 wt % of a polymer, and c) at least 2 to 50 wt % of aromatic compound(s), wherein the aromatic compound(s) is present in an amount greater than 2 wt %, the at least one aromatic compound(s) and the polymer are present in amounts such that the ratio of amount present of aromatic compound to amount present of polymer is from 0.5 to 10, and the composition has a FRAASS point of less than or equal to -13.degree. C. and a storage stability defined by a ".DELTA. ring-and-ball" and a ".DELTA. penetrability" of less than or equal to 5. Also a process for preparing such asphalt-polymer composition including mixing the asphalt, the polymer and the aromatic compound at a temperature from 190.degree. to 300.degree. C. for a period of time preferably exceeding 30 minutes. The asphalt-polymer composition can be used as a road asphalt, emulsion or surface coating.

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