Foamable interpolymer resin particles containing limonene as...

Details Foamable interpolymer resin particles containing limonene as... Foamable interpolymer resin particles containing limonene as...

2005-06-21

2005-06-21

Foelak, Morton (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S060000, C521S134000, C521S139000, C525S192000, C525S240000, C525S423000

Reexamination Certificate

active

06908949

ABSTRACT:
Interpolymer resin particles comprised of 20% to 80% by weight polyolefin, e.g. polyethylene and 80% to 20% by weight of an in situ polymerized vinyl aromatic resin, e.g. polystyrene or poly(styrene-butyl acrylate) and forming an interpenetrating network of polyolefin and vinyl aromatic resin particles. The interpolymer particles are impregnated with a volatile hydrocarbon blowing agent, and limonene, e.g. d-limonene, ranging from about 0.1 to about 5 parts, preferably 0.1 to 1 part by weight, based on 100 parts by weight of the interpolymer particles, for improved expandability and a pleasant fragrance.

REFERENCES:
patent: 5759569 (1998-06-01), Hird et al.
patent: 6316392 (2001-11-01), Heimann et al.
patent: 6331509 (2001-12-01), Heimann et al.

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