Thermoplastic elastomers and polymers derived from recycled rubber and plastics

US 20020113333A1

(19) United States (12) Patent Application Publication (10) Pub. N0.: US 2002/0113333 A1 (43) Pub. Date:

Liu et al. (54) THERMOPLASTIC ELASTOMERS AND POLYMERS DERIVED FROM RECYCLED RUBBER AND PLASTICS

Aug. 22, 2002

Publication Classi?cation (51)

Im. c1? .......................... .. B29B 7/00; B29B 15/00;

(52)

Us. 01. ............................................ .. 264/83; 264/349

1329c 31/00

(76) Inventors: Helen S. Liu, Weymouth, MA (US); Joey L. Mead, Bedford, MA (US); Ross G. Stacer, Ashland, MA (US)

(57)

ABSTRACT

Correspondence Address: NUTTER MCCLENNEN & FISH LLP ONE INTERNATIONAL PLACE

Materials ranging from impact-modi?ed thermoplastics to

BOSTON, MA 02110 (US)

of phase compatibility-treated recycled thermoset rubber With thermoplastic polymers by varying the ratio of com

(21) Appl. No.:

09/960,620

(22) Filed:

Sep. 21, 2001 Related US. Application Data

(60) Provisional application No. 60/234,256, ?led on Sep. 21, 2000.

(30)

Foreign Application Priority Data

Sep. 22, 2000

(JP) .................................... .. 2000-289388

thermoplastic elastomers (TPE) can be obtained from blends

ponents in the blend, or by changing the components them selves. The rubber component may include carbon black, or other ?llers and additives, and it may be selected from among a variety of thermoset rubbers, both natural and synthetic. The thermoset rubber component can be obtained from a rubber material recycled according to a variety of knoWn techniques. The thermoplastic component can be virtually any suitable polymer, the properties of Which can be advantageously modi?ed by combination With a rubber. Polyole?ns are among the more preferred thermoplastic

components.

Patent Application Publication Aug. 22, 2002 Sheet 1 of 9

US 2002/0113333 A1

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