# US 2019/0375868 A1 · Polymer having a small average particle size

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- Number: US 2019/0375868 A1
- Document ID: US20190375868A1
- Status: Published application
- Kind: A1
- Application number: 16/312,040
- Filed: 2017-06-21
- Published: 2019-12-12
- Earliest claimed: 2016-06-30
- Assignees: Sabic Global Technologies B.V.
- Applicants: Sabic Global Technologies B.V.
- Inventors: Attyah Saeed AL-ZHRANI; Mohammed ZERFA; Faisal ALHAREEKI
- Web page: https://patentgrep.com/patent/US20190375868A1

## CPC

- C08F 214/06: Vinyl chloride
- C08F 220/20: of polyhydric alcohols or phenols {, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate}
- C08F 220/26: Esters containing oxygen in addition to the carboxy oxygen
- C08K 5/0016: {Plasticisers}
- C08L 27/06: Homopolymers or copolymers of vinyl chloride
- C08L 29/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
- C08F 212/08: Styrene
- C08F 220/282: {and containing two or more oxygen atoms}
- C08F 2800/20: as weight or mass percentages
- C08L 2201/54: Aqueous solutions or dispersions
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L 2205/14: containing polymeric additives characterised by shape
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The present invention relates to a polymer comprising: (a) polymeric units derived from vinyl chloride, vinyl acetate, styrene, methyl methacrylate, acrylonitrile, or combinations thereof; and 5 (b) polymeric units derived from one or more compounds according to formula I: wherein: R1 is CH3 or H; 10. R2 is a moiety comprising 1-20 carbon atoms; and. n is an integer from 1-10; wherein the polymer has. an average particle size of 10-80 μm expressed as D50 determined in accordance with ISO 9276-2 (2014); and 15 x a porosity of ≤0.20 ml/g as determined as the quantity of di(2-ethylhexyl)phthalate in ml absorbed by 1 g of polymer upon subjecting the polymer at 23° C. to vacuum, submerging in di(2-ethylhexyl)phthalate for 10 min, and subsequently centrifuging at 2000 rpm for 45 min. Such polymer may be used as viscosity reducing agent in PVC plastisol compositions. 20

## Claims

### Claim 1

A polymer comprising:
(a) polymeric units derived from vinyl chloride, vinyl acetate, styrene, methyl methacrylate, acrylonitrile, or combinations thereof; and
(b) polymeric units derived from one or more compounds according to formula I:
formula I
wherein:
R1 is CH3 or H;
R2 is a moiety comprising 1-20 carbon atoms; and
n is an integer from 1-10;
wherein the polymer has
an average particle size of 10-80 μm expressed as D50 determined in accordance with ISO 9276-2 (2014); and
a porosity of ≤0.20 ml/g as determined as the quantity of di(2-ethylhexyl)phthalate in ml absorbed by 1 g of polymer upon subjecting the polymer at 23° C. to vacuum, submerging in di(2-ethylhexyl)phthalate for 10 min, and subsequently centrifuging at 2000 rpm for 45 min.

### Claim 2 (depends on 1)

A polymer according to claim 1, wherein R2 is a moiety comprising at least one hydroxyl moiety.

### Claim 3 (depends on 1)

A polymer according to claim 1, wherein the polymer comprises ≥500 ppm of units (b), with regard to the total weight of the polymer.

### Claim 4 (depends on 1)

A polymer according to claim 1, wherein the polymeric units (a) are derived from vinyl chloride.

### Claim 5 (depends on 1)

A polymer according to claim 1, wherein the polymeric units (b) are derived from one or more compounds selected from glycerol (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, tetritol mono(meth)acrylate, xylitol mono(meth)acrylate, sorbitol mono(meth)acrylate, polyethyleneglycol (meth)acrylate, polypropyleneglycol (meth)acrylate, or combinations thereof.

### Claim 6 (depends on 1)

A polymer according to claim 1, wherein the polymeric units (b) are derived from glycerol (meth)acrylate.

### Claim 7 (depends on 1)

A polymer according to claim 1, wherein the polymer is produced in a suspension polymerisation process.

### Claim 8 (depends on 7)

A polymer according to claim 7, wherein the suspension polymerisation process comprises reacting a reaction mixture comprising:
a quantity of a reaction medium;
a quantity of vinyl chloride, vinyl acetate, styrene, methyl methacrylate, acrylonitrile, or combinations thereof; and
a quantity of one or more compounds according to formula I:
formula I
wherein:
R1 is CH3 or H;
R2 is a moiety comprising 1-20 carbon atoms; and
n is an integer from 1-10.

### Claim 9 (depends on 7)

A polymer according to claim 7, wherein the suspension polymerisation process comprises reacting a reaction mixture comprising:
a quantity of a reaction medium;
a quantity of vinyl chloride, vinyl acetate, styrene, methyl methacrylate, acrylonitrile, or combinations thereof; and
a quantity of one or more compounds selected from glycerol (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, tetritol mono(meth)acrylate, xylitol mono(meth)acrylate, sorbitol mono(meth)acrylate, polyethyleneglycol (meth)acrylate, polypropyleneglycol (meth)acrylate, or combinations thereof.

### Claim 10 (depends on 7)

A polymer according to claim 7, wherein the suspension polymerisation process comprises reacting a reaction mixture comprising:
a quantity of a reaction medium;
a quantity of vinyl chloride, vinyl acetate, styrene, methyl methacrylate, acrylonitrile, or combinations thereof; and
a quantity of ≥500 ppm by weight, with regard to the weight of the quantity of vinyl chloride, vinyl acetate, styrene, methyl methacrylate, acrylonitrile, or combinations thereof, of a one or more compounds selected from glycerol (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, tetritol mono(meth)acrylate, xylitol mono(meth)acrylate, sorbitol mono(meth)acrylate, polyethyleneglycol (meth)acrylate, polypropyleneglycol (meth)acrylate, or combinations thereof.

### Claim 11 (depends on 7)

PA polymer according to claim 7, wherein the suspension polymerisation process comprises reacting a reaction mixture comprising:
a quantity of a reaction medium;
a quantity of vinyl chloride; and
a quantity of ≥500 ppm by weight, with regard to the weight of the quantity of vinyl chloride, of a glycerol (meth)acrylate.

### Claim 12 (depends on 1)

A method of reducing a viscosity of a plastisol composition, comprising combining the polymer according to claim 1 with the plastisol compositions.

### Claim 13 (depends on 1)

A plastisol composition comprising a polymer according to any claim 1 and a polyvinyl chloride polymer having an average particle size of 1-20 μm.

### Claim 14 (depends on 1)

A plastisol composition comprising 10.0-30.0 wt % of the polymer according to claim 1 with regard to the total weight of the plastisol composition.

### Claim 15 (depends on 14)

A plastisol composition according claim 14 further comprising a polyvinyl chloride polymer having an average particle size of 1-20 μm.

### Claim 16 (depends on 14)

A plastisol composition according claim 14, wherein
the polymeric units (a) are derived from vinyl chloride, and
the polymeric units (b) are derived from one or more compounds selected from glycerol (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, tetritol mono(meth)acrylate, xylitol mono(meth)acrylate, sorbitol mono(meth)acrylate, polyethyleneglycol (meth)acrylate, polypropyleneglycol (meth)acrylate, or combinations thereof.

### Claim 17 (depends on 16)

A polymer according to claim 16, wherein the polymeric units (b) are derived from glycerol (meth)acrylate.