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US 12,698,384 B1Granted
Binary filler-containing extrudate composition and building products formed from same
AssigneeThe AZEK Group LLC
InventorJia Fan
Life of this patent
Estimating the term…
Abstract
A composition includes about 60 to about 90 wt. % polyvinyl chloride (PVC) resin, about 10 to about 40 wt. % filler material, where the filler material includes about 25 to about 75 wt. % wood flour and about 25 to about 75 wt. % wollastonite, about 1 to about 2 wt. % heat stabilizer, and about 0.1 to about 3 wt. % lubricant.
Claims14
A composition comprising:
- about 60 to about 90 wt. % polyvinyl chloride (PVC) resin;
- about 10 to about 40 wt. % filler material;
- wherein the filler material comprises:
- about 25 to about 75 wt. % wood flour and
- about 25 to about 75 wt. % wollastonite,
- about 1 to about 2 wt. % heat stabilizer;
- and
- about 0.1 to about 3 wt. % lubricant, wherein the wood flour comprises acicular particles having an average length of 50 micrometers to 1000 micrometers and an aspect ratio of 5:1 to 15:1;
- wherein the wollastonite comprises acicular particles having an average length of 20 micrometers to 100 micrometers and an aspect ratio of 10:1 to 20:1;
- and a weight ratio of the wood flour to the wollastonite is 1:3 to 3:1.
7 more elements
A composition comprising:
- 60 to 90 wt. % polyvinyl chloride (PVC) resin;
- 2.5 to 30 wt. % wood flour;
- and
- 2.5 to 30 wt. % wollastonite, wherein the wood flour comprises acicular particles having an average length of 50 micrometers to 1000 micrometers and an aspect ratio of 5:1 to 15:1;
- the wollastonite comprises acicular particles having an average length of 20 micrometers to 100 micrometers and an aspect ratio of 10:1 to 20:1;
- and a weight ratio of the wood flour to the wollastonite is 1:3 to 3:1.
3 more elements
An article comprising:
- a body comprising polyvinyl chloride (PVC) resin;
- and
- first and second filler materials dispersed throughout the body, wherein the first filler material comprises particles of wood flour, and wherein the second filler material comprises particles of wollastonite, wherein the body comprises 60 to 90 wt % polyvinyl chloride (PVC) resin, 5-30 wt. % wood flour particles and 5 to 30 wt % wood flour particles,
- wherein the particles of wood flour comprise acicular particles having an average length of 50 micrometers to 1000 micrometers and an aspect ratio of 5:1 to 15:1, and the particles of wollastonite comprise acicular particles having an average length of 20 micrometers to 100 micrometers and an aspect ratio of 10:1 to 20:1;
- and a weight ratio of the wood flour particles to the wollastonite particles is 1:3 to 3:1.
2 more elements
A composition comprising:
- 60 to 90 wt. % polyvinyl chloride (PVC) resin;
- 2.5 to 30 wt. % wood flour;
- 2.5 to 30 wt. % wollastonite;
- 1 to 2 wt. % heat stabilizer;
- and
- 0.1 to 3 wt. % lubricant,
- wherein the wood flour comprises acicular particles having an average length of 50 micrometers to 1000 micrometers and an aspect ratio of 5:1 to 15:1;
- wherein the wollastonite comprises acicular particles having an average length of 20 micrometers to 100 micrometers and an aspect ratio of 10:1 to 20:1;
- wherein a weight ratio of the wood flour to the wollastonite is 1:3 to 3:1;
- and
- wherein the composition has a thermogravimetric analysis (TGA)-derived ash content of less than 30 wt. %.
8 more elements
Dependencies are inferred from the claim text.