Flexible cellular material, composition and process for its preparation
AssigneeNorton Performance Plastics Corporation
InventorsMichel Ladang, Marc Mertens, Dominique Petit
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Abstract
A flexible cellular material can be made by extruding a composition containing a polyurethane prepolymer, where the prepolymer has end groups selected from the group consisting of isocyanate end groups and trialkoxysilyl end groups, and the prepolymer is self-crosslinkable with moisture. The flexible cellular material has an expanded or foamed polymer matrix.
Claims43
A flexible cellular material prepared by a method, comprising:
- extruding a composition comprising a macromolecular constituent to form said flexible cellular material;
- wherein the macromolecular constituent is a polyurethane prepolymer comprising end groups selected from the group consisting of isocyanate end groups and trialkoxysilyl end groups,
- said prepolymer is self-crosslinkable with moisture, and
- said flexible cellular material does not include a noncrosslinked elastomer component.
A method of making a flexible cellular material, comprising:
- extruding a composition comprising a macromolecular constituent to form said flexible cellular material;
- wherein the macromolecular constituent is a polyurethane prepolymer comprising end groups selected from the group consisting of isocyanate end groups and trialkoxysilyl end groups,
- said prepolymer is self-crosslinkable with moisture and
- said flexible cellular material does not include a noncrosslinked elastomer component.
A composition comprising a macromolecular constituent, wherein said macromolecular constituent is a polyurethane prepolymer comprising end groups selected from the group consisting of isocyanate end groups and trialkoxysilyl end groups,
- said prepolymer is self-crosslinkable with moisture, and
- said composition does not include a second elatomeric polymer.
A method of making a composition, comprising:
- reacting
- (i) a first component selected from polyols and polyamines with a functionality of at least 2, said first component having a backbone selected from the group consisting of polyester, polycaprolactone, polyether, polyolefin, polybutadiene, polyisoprene and polydimethylsiloxane backbones;
- and
- (ii) at least one polyisocyanate selected from the group consisting of paraphenylene diisocyanate, trans-1,4-cyclohexane diisocyanate, 3-isocyanatomethyl-3,3,5-trimethylcyclohexyl isocyanate, 1,5-naphthalene diisocyanate, 4,4′-methylenebis(phenyl isocyanate), crude 4,4′-methylenebis(phenyl isocyanate), 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, mixtures of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate, and crude toluene diisocyanate;
- wherein said at least one polyisocyanate has a functionality of at least 2, and
- said composition does not include a second elastomeric polymer.
Dependencies are inferred from the claim text.