The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Jun. 17, 2009
Willie Lau, Lower Gwynedd, PA (US);
Donald C. Schall, Lansdale, PA (US);
Harry R. Heulings, Iv, Maple Shade, NJ (US);
Kimberly B. Kosto, Maple Glen, PA (US);
Joseph M. Rokowski, Barto, PA (US);
Willie Lau, Lower Gwynedd, PA (US);
Donald C. Schall, Lansdale, PA (US);
Harry R. Heulings, IV, Maple Shade, NJ (US);
Kimberly B. Kosto, Maple Glen, PA (US);
Joseph M. Rokowski, Barto, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The present invention provides methods of making shapeable composites in the form of finely divided materials or articles and the materials and articles produced by the methods, the methods comprising forming mixtures by (i) treating an aqueous thermoplastic acrylic or vinyl polymer to increase the particle size thereof to a weight average particle size of 1 μm or more, and, optionally, dewatering to form a crumb mixture; and (ii) combining a thermoplastic acrylic or vinyl polymer with one or more waste rubber vulcanizate having a sieve particle size ranging from 10 to 600 μm in the amount of from 15 to 95 wt. %, based on the total weight of polymer and rubber to form a crumb slurry, such that (ii) can take place before, during, after (i) but before any dewatering, or after any dewatering; and (iii) thermoplastic processing the mixture. Thermoplastic processing can directly form articles, like sheets or films. The shapeable composites have excellent adhesion to other materials. In one embodiment, the sheets and films can be formed into laminates.