# US 2014/0197562 A1 · Composite material for making articles out of polyurethane doped with polymeric gel and the procedure for making it

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- Number: US 2014/0197562 A1
- Document ID: US20140197562A1
- Status: Published application
- Kind: A1
- Application number: 14/119,739
- Filed: 2012-05-22
- Published: 2014-07-17
- Earliest claimed: 2011-05-23
- Assignees: New Wind S.r.l.
- Applicants: New Wind S.R.L.
- Inventors: Filippo Piccinini; Nilso Cruccas
- Web page: https://patentgrep.com/patent/US20140197562A1

## CPC

- C08L 75/04: Polyurethanes
- C08J 9/0014: {Use of organic additives}
- C08J 9/0061: {characterized by the use of several polymeric components}
- C08L 9/06: Copolymers with styrene
- C08G 2110/0008: flexible
- C08G 2110/0066: ≥ 150kg/m3
- C08G 2110/0083: prepared using water as the sole blowing agent
- C08G 2350/00: Acoustic or vibration damping material
- C08J 2375/04: Polyurethanes
- C08J 2453/02: of vinyl aromatic monomers and conjugated dienes
- C08J 2483/04: Polysiloxanes
- C08L 53/025: {modified}
- C08L 83/04: Polysiloxanes
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

A standard polyurethane doped with a polymeric gel uniformly diffused in the body, where the polyurethane acquires the properties of the gel without any change to its structure in a durable stable manner.

## Claims

### Claim 1

A composite material for making an article with polyurethane foam comprising a silicone gel evenly distributed throughout the material in a concentration of between 2% and 50% of the total mass of the article.

### Claim 2

(canceled)

### Claim 3 (depends on 1)

The composite material according to claim 1 wherein said silicone gel is in the form of scales or granules with dimensions ranging from less than a millimeter to 5 millimeters.

### Claim 4 (depends on 1)

The composite material according to claim 1 wherein said silicone gel belongs to the family of thermoplastics.

### Claim 5 (depends on 1)

The composite material according to claim 1 wherein said silicone gel is an SEBS rubber.

### Claim 6 (depends on 1)

The composite material according to claim 1 wherein said silicone gel is an SEBS rubber wherein the plastic phase is of a polyolofinic nature.

### Claim 7 (depends on 1)

The composite material according to claim 1 having an increased viscoelasticity equal to at least three times that of traditional polyurethane foam.

### Claim 8

A procedure for making an article out of polyurethane foam comprising the steps:
preparing a polyoil-based component and a silicone gel;
reducing the silicone gel to granules with dimensions ranging from less than a millimeter to 5 millimeters;
mixing said silicone gel granules in said polyoil base to form a mixture;
combining said mixture with an isocyanate component in order to obtain a polyurethane foam mixture.
delivering the polyurethane foam mixture on a foaming line;
polymerizing said polyurethane foam mixture until a product obtained from the polymerization of said polyurethane foam mixture can no longer become deformed under its own weight; and
cutting the blocks obtained from the foaming line.

### Claim 9 (depends on 8)

The procedure of claim 8 wherein the step of mixing said silicone gel granules in said polyoil base to form a mixture takes place between three and four hours before combining said mixture with an isocyanate component in order to obtain a polyurethane foam mixture.

### Claim 10 (depends on 8)

The procedure of claim 8 wherein the step of mixing said silicone gel granules in said polyoil base to form a mixture takes place about two hours before combining said mixture with an isocyanate component in order to obtain a polyurethane foam mixture.

### Claim 11 (depends on 8)

The procedure of claim 8 wherein the polymeric gel granules are combined with the isocyanate component between three hours and forty-eight hours before the preparation of the mix to be combined with the polyoil component.

### Claim 12

A procedure for making an article out of polyurethane foam comprising the steps:
preparing a polyoil-based component and a silicone gel;
reducing the silicone gel to granules with dimensions ranging from less than a millimeter to 5 millimeters;
mixing said silicone gel granules in said polyoil base to form a mixture;
combining said mixture with an isocyanate component in order to obtain a polyurethane foam mixture.
delivering the polyurethane foam mixture inside a mold;
polymerizing said polyurethane foam mixture until a product obtained from the polymerization of said polyurethane foam mixture can no longer become deformed under its own weight; and
extracting said product from said mold.

### Claim 13 (depends on 12)

The procedure of claim 12 wherein the step of mixing said silicone gel granules in said polyoil base to form a mixture takes place between three and four hours before combining said mixture with an isocyanate component in order to obtain a polyurethane foam mixture.

### Claim 14 (depends on 12)

The procedure of claim 12 wherein the step of mixing said silicone gel granules in said polyoil base to form a mixture takes place about two hours before combining said mixture with an isocyanate component in order to obtain a polyurethane foam mixture.

### Claim 15 (depends on 12)

The procedure of claim 12 wherein the polymeric gel granules are combined with the isocyanate component between three hours and forty-eight hours before the preparation of the mix to be combined with the polyoil component.