Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-09-06
2005-09-06
Nutter, Nathan M. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S226000, C525S227000, C525S232000, C525S241000
Reexamination Certificate
active
06939917
ABSTRACT:
The impact-resistant thermoplastic compositions comprising (A) a rigid thermoplastic methacrylic polymer or copolymer matrix P containing mostly methyl methacrylate units, (B) at least one impact-modifying additive and (C) at least one elastomer copolymer which contains grafting sites, at least on pendant chains, and is obtained from at least one vinylaromatic monomer (C1) and from at one monomer chosen from the monomers (C2): C1-C15linear or branched alkyl acrylates, C1-C4alkoxyalkyl acrylates and aralkyl acrylates, dienes (C3) and ethylenically unsaturated monomers (C4) having one or more pendant initiating functional groups, the said copolymer (C) being grafted by thermoplastic polymer groups P and being dispersed in the matrix (A) in the form of nodules, which can be called “particles”, from 10 nm to 500 nm in size and able to have a droplet, capsule-type monoinclusion and/or salami-type multi-inclusion morphology.
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XP000390974—Lovell P A et al.: “Studies Of Rubeer-Toughened Poly(Methyl Methacrylate):1. Preparation And Thermal Properties Of Blenda Of Poly(Methyl Methacrylate) With Multiple-Layer Toughening Particles” Polymer, GB, Jordan Hill, Oxford, vol. 34, No. 1, 1993, pp. 61-69.
Gaillard Patrice
Heim Philippe
Meunier Gilles
Vuillemin Bruno
Arkema
Millen White Zelano & Branigan P.C.
Nutter Nathan M.
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