Filled polyvinyl chloride composition

Patent metadata

Field	Value
Publication number	US-11945940-B2
Application number	US-201917049064-A
Country	US
Kind code	B2
Filing date	Apr 18, 2019
Priority date	Apr 23, 2018
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

A composition is provided comprising: a) polyvinylchloride, b) inorganic solid particles, and c) a polymer having a polyether segment, wherein at least 60 mol-% of the end groups of the polymer are selected from the group consisting of carboxylic acid groups and hydroxyl groups, and wherein at least a part of the end groups of the polymer is a carboxylic acid group, wherein the carboxylic acid end groups are linked to the polyether segment via a linking segment comprising an ester group.

First claim

The invention claimed is:

1. A composition comprising
a) polyvinylchloride,
b) inorganic solid particles, and
c) a polymer comprising a polyether segment, wherein at least 60 mol-% of end groups of the polymer include any one or more of a carboxylic acid group and a hydroxyl group, and at least a part of the end groups includes a carboxylic acid group, linked to the polyether segment via a linking segment comprising an ester group.

2. The composition according to claim 1 , wherein the polymer comprises on average at least 1.0 carboxylic acid end groups per molecule.

3. The composition according to claim 1 , wherein the linking segment comprises a hydrocarbyl group located between the ester group and the carboxylic acid group, wherein the ester group and the carboxylic acid group are separated by at most 6 carbon atoms.

4. The composition according to claim 1 , wherein the polyether segment comprises polyalkylene oxide units.

5. The composition according to claim 1 , wherein the polyether segment comprises repeating units of the formula —[O—(CH 2 ) 4 ]—.

6. The composition according to claim 1 , wherein the polymer has 2 to 6 end groups.

7. The composition according to claim 1 , wherein the polymer has a number average molecular weight Mn in the range of 1000 to 5000 g/mol.

8. The composition according to claim 1 , wherein the composition comprises the inorganic solid particles in an amount in the range of 20 to % by weight, calculated on the weight of the composition.

9. The composition according to claim 1 , further comprising a plasticizer.

10. The composition according to claim 1 , further comprising an acrylic copolymer comprising a methyl methacrylate unit and at least one other acrylic monomer.

11. The composition according to claim 1 , comprising
a) 7 to 60% by weight of the polyvinylchloride,
b) 20 to 90% by weight of the inorganic solid particles, and
c) 0.1 to 5.0% by weight of the polymer,
d) 0 to 30% by weight one or more plasticizers, and
e) 0 to 5% by weight of other additives which are different from components a) to d),
wherein the % by weight are calculated on the total weight of the composition.

12. A process of preparing a filled polyvinyl chloride material, the process comprising:
forming a mixture by mixing, in any suitable order, components comprising:
polyvinylchloride,
inorganic solid particles,
a polymer comprising a polyether segment, wherein at least 60 mol-% of end groups of the polymer include any one or more of a carboxylic acid group and a hydroxyl group, and at least a part of the end groups includes a carboxylic acid group linked to the polyether segment via a linking segment comprising an ester group, and
optionally further components, and
subjecting the mixture to shear force in a temperature range of 80 to 200° C.

13. A composition comprising inorganic solid particles and a polymer having a polyether segment, wherein at least 60 mol-% of end groups of the polymer include any one or more of a carboxylic acid group and a hydroxyl group, at least a part of the end groups includes a carboxylic acid group linked to the polyether segment via a linking segment comprising an ester group, and the composition comprises the polymer in an amount of 0.1% to 5.0% by weight calculated on the weight of the inorganic solid particles.

14. A floor tile comprising the composition according to claim 1 .

15. A method of improving mechanical properties of a composition, the method comprising:
adding a polymer to a composition comprising polyvinylchloride and inorganic solid particles, the polymer comprising a polyether segment, wherein at least 60 mol-% of end groups of the polymer include any one or more of a carboxylic acid group and a hydroxyl group, at least a part of the end groups includes a carboxylic acid group linked to the polyether segment via a linking segment comprising an ester group.

Assignees

• BYK—Chemie GmbH
• Byk Chemie Gmbh

Inventors

• Pritschins Wolfgang
• Leibig Daniel
• Fischer Martin
• Fritsch Thomas
• Heitzer Jennifer
• Krüsmann Dennis

Classifications

• C08L27/06 Primary

  Homopolymers or copolymers of vinyl chloride · CPC title

• C08K3/26

  Carbonates; Bicarbonates · CPC title

• C08K5/12

  of cyclic polycarboxylic acids · CPC title

• C08L71/02

  Polyalkylene oxides · CPC title

• C08K2003/265

  Calcium, strontium or barium carbonate · CPC title