# US 8,783,860 B2 · Material based on cellulose acetate with plasticisers and manufactured article produced therewith > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,860 B2 - Document ID: US8783860B2 - Status: Granted - Kind: B2 - Application number: 13/808,394 - Filed: 2011-07-04 - Published: 2013-07-04 - Granted: 2014-07-22 - Earliest claimed: 2010-07-05 - Assignees: Mazzucchelli 1849 S.P.A. - Applicants: Davide Orsi Mazzucchelli - Inventors: Davide Orsi Mazzucchelli - Web page: https://patentgrep.com/patent/US8783860B2 ## CPC - C08L 1/12: Cellulose acetate - B29D 12/02: Spectacle frames (constructional form G02C) - C08K 5/11: of acyclic polycarboxylic acids - C08K 5/12: of cyclic polycarboxylic acids - C08K 5/523: with hydroxyaryl compounds - G02B 1/041: {Lenses} - G02C 5/008: {Spectacles frames characterized by their material, material structure and material properties} - G02C 7/022: {Ophthalmic lenses having special refractive features achieved by special materials or material structures (G02C7/049 takes precedence)} - C08K 5/0016: {Plasticisers} - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract A plastic material based on cellulose acetate, including at least one plasticizer, in which the plasticizer includes a mixture of a first plasticizer including citric acid esters and at least one second plasticizer selected from the group of organic phosphates, glycerol esters and trimellitic acid esters, the content of the first plasticizer being equal to or greater than the second plasticizer and the aforementioned mixture of plasticizers constituting overall 25-35% by weight of the plastic material. ## Claims ### Claim 1 Plastic material based on cellulose acetate, comprising at least one plasticizer, said plasticizer is comprised of the mixture of a first plasticizer comprised of citric acid esters with at least one second plasticizer, the content of the first plasticizer being equal to or greater than the second plasticizer and the aforementioned mixture of plasticizers constituting overall 25-35% by weight of said plastic material, characterized in that said first plasticizer amounts to 60-70% by weight and said second plasticizer is an organic phosphate amounting to 40-30% by weight. ### Claim 2 (depends on 1) Plastic material as in claim 1, in which said first plasticizer is acetyl triethyl citrate (CTR). ### Claim 3 (depends on 2) Plastic material as in claim 2, in which said second plasticizer is chosen from triaryl phosphate, alkyl diaryl phosphate, triphenyl phosphate, ethylhexyl diphenyl phosphate and isodecyl diphenyl phosphate, and is preferably triphenyl phosphate (TPP). ### Claim 4 (depends on 2) Spectacle frame comprising, at least in part, a material based on cellulose acetate with plasticizers, characterized in that said material based on cellulose acetate with plasticizers is a plastic material according to claim 2. ### Claim 5 (depends on 4) Spectacles comprising a frame as in claim 4 and lenses made of a polycarbonate-based material. ### Claim 6 (depends on 2) Lenses for spectacles or face-guards comprising, at least in part, a material based on cellulose acetate with plasticizers, characterized in that said material based on cellulose acetate with plasticizers is a plastic material according to claim 2. ### Claim 7 (depends on 2) Support plate or cover for a device containing electronic components, characterized in that it consists of a plastic material as in claim 2. ### Claim 8 (depends on 1) Plastic material as in claim 1, in which said second plasticizer is chosen from triaryl phosphate, alkyl diaryl phosphate, triphenyl phosphate, ethylhexyl diphenyl phosphate and isodecyl diphenyl phosphate, and is preferably triphenyl phosphate (TPP). ### Claim 9 (depends on 8) Spectacle frame comprising, at least in part, a material based on cellulose acetate with plasticizers, characterized in that said material based on cellulose acetate with plasticizers is a plastic material according to claim 8. ### Claim 10 (depends on 9) Spectacles comprising a frame as in claim 9 and lenses made of a polycarbonate-based material. ### Claim 11 (depends on 8) Lenses for spectacles or face-guards comprising, at least in part, a material based on cellulose acetate with plasticizers, characterized in that said material based on cellulose acetate with plasticizers is a plastic material according to claim 8. ### Claim 12 (depends on 8) Support plate or cover for a device containing electronic components, characterized in that it consists of a plastic material as in claim 8. ### Claim 13 (depends on 1) Spectacle frame comprising, at least in part, a material based on cellulose acetate with plasticizers, characterized in that said material based on cellulose acetate with plasticizers is a plastic material according to claim 1. ### Claim 14 (depends on 13) Spectacles comprising a frame as in claim 13 and lenses made of a polycarbonate-based material. ### Claim 15 (depends on 1) Lenses for spectacles or face-guards comprising, at least in part, a material based on cellulose acetate with plasticizers, characterized in that said material based on cellulose acetate with plasticizers is a plastic material according to claim 1. ### Claim 16 (depends on 1) Support plate or cover for a device containing electronic components, characterized in that it consists of a plastic material as in claim 1.