Acrylate polymer modified asphalt compositions
CA 1315439 C · Owner: Higgins, William A. · Inventors: Higgins, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
L-2365C, Title: ACRYLATE POLYMER MODIFIED ASPHALT COMPOSITIONS Abstract of the Disclosure, Modified asphalt compositions are described which comprise, (A) asphalt, and, (B) a minor effective amount sufficient to, improve the durability of the asphalt in service of at, least one hydrocarbon-soluble acrylate polymer of the formula, x, wherein R1 is a lower alkyl group containing from 1 to about 4 carbon atoms, R2 is a mixture of alkyl groups containing from about 4 to about 20 carbon atoms and x, is an integer providing a weight average molecular weight (Mw) to the acrylate polymer of about 5000 to about 1,000,000. Generally, the modified asphalt compositions will contain from about 0.01 to …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.