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:
Mar. 20, 1979
Filed:
Apr. 05, 1977
Sergio Arrighetti, Milan, IT;
Aldo Brancaccio, Cremona, IT;
Sebastiano Cesca, San Donato Milanese (Milan), IT;
Giampaolo Giuliani, San Donato Milanese (Milan), IT;
Anic S.p.A., Palermo, IT;
Abstract
Novel thermoplastic materials can be obtained in which besides the resin formed by polymerizing alkenylaromatic with or without acrylic and vinylic monomers, there is also a branched interpolymer the main carbon atom chain of which has a saturated elastomeric nature, whereas the chains which make up the branch-offs have a plastic character. Side-chains on the saturated rubber, which have the same composition as the non-grafted resin, favors the even dispersion of the rubber in the resin matrix so that the physical and mechanical properties of the resin are considerably improved: an improved resistance to ageing is also achieved. A styrene-acrylonitrile resin grafted on a saturated ethylene-propylene copolymer is but an example. The preparation process is carried out in solution: critical conditions, additives, adjuvants, initiators and promoters are indicated and exemplified. Irradiation with ultraviolet rays may be of help.