US 7,608,216 B2Granted

Methods for preparing articles from processable and dimensionally stable elastomer compositions

AssigneeFreudenberg-NOK General Partnership

InventorsEdward H. Park, Francis Joseph Walker

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Abstract

Methods for preparing a shaped rubber article, comprising admixing at least one thermoplastic material and at least one elastomer material to provide a processable and dimensionally stable rubber composition, shaping the composition, and irradiating the composition to form the shaped rubber article. The dimensional stability of the uncured composition may be provided by partial dynamic vulcanization, high performance reinforcing fillers, fractional curing, or combinations thereof. The elastomer material is present in an amount greater than about 65% by weight based on the total weight of the thermoplastic and elastomer materials present in the admixture.

Claims32

Dependent claims

A method for preparing a shaped rubber article, comprising

(a) admixing a thermoplastic material, an elastomer material, and at least two curatives, wherein the elastomer material is present in an amount greater than about 65% by weight based on the total weight of the thermoplastic and elastomer materials;
(b) partially dynamically curing the elastomer material, the partial dynamic curing comprising not reacting at least one of the curatives, wherein a processable composition is formed comprising a thermoplastic phase comprising said thermoplastic material dispersed in a continuous elastomer phase comprising said elastomer material, the composition having a green strength sufficient to inhibit substantial creep of the composition;
(c) shaping the processable composition;
and
(d) irradiating the shaped composition, wherein the composition is finally cured.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/646,315Filed 27 Dec 2006
Published: US 2008/0157439 A13 Jul 2008
Granted: 27 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B29C 67/24
Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00: characterised by the choice of material
B29C 49/0005
Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor: characterised by the material
C08J 3/28
Processes of treating or compounding macromolecular substances: treatment by wave energy or particle radiation
B29K 2021/00
Use of unspecified rubbers as moulding material

Family

US 2008/0157439 A1Pre-grant publication · published 3 Jul 2008
US 7,608,216 B2This patent

From the US filing history. Foreign family members aren’t listed.

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