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:
Apr. 25, 1978
Filed:
Dec. 13, 1974
Daniel T Carty, Willingboro, NJ (US);
James A Oline, Wyncote, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
Blends of the thermoplastic polymers and a multiphase acrylic composite polymer comprising (A) a first non-crosslinked phase of molecular weight of about 7,500 to 50,000 polymerized from a first monomer emulsion or solution of at least 25 weight percent of at least one alkyl acrylate, wherein said alkyl group has 1 to 18 carbon atoms, 0 to 75 weight percent of another acrylic monomer and 0 to 75 weight percent of another copolymerizable ethylenically unsaturated monomer, and (B) a final rigid thermoplastic phase polymerized in the presence of the first phase from an emulsion or solution of about 35 to 100 weight percent of at least one monomer which is a methacrylate, acrylate, styrene or substituted styrene, 0 to 60 weight percent of another acrylic monomer, and 0 to 65 weight percent of another copolymerizable ethylenically unsaturated monomer, wherein the rigid thermoplastic phase has a molecular weight of from about 400,000 to about 5 .times. 10.sup.6. The polymer is useful as a processing aid and lubricant in a wide variety of plastics.