Westlake 1185

Producer

Westlake Corporation

Polymer

PVC

Type

Suspension resin

K-value

56

Inherent viscosity

0.68 dl/g

Producer lists it for

Blow moulded bottles · Injection moulded fittings

What that means in practice

K56 at IV 0.68, aimed squarely at blow moulded bottles and injection moulded fittings. Sits alongside 5265 and 2070 at almost the same viscosity but with a narrower stated application list, so check which of the three you are actually being offered.

If K-values are not something you work with daily, our PVC grades and pricing guide explains what they measure and how prime, off-spec, regrind and regranulate differ.

What to check before buying Westlake 1185

• Confirm the K-value on the batch, not just the grade name — low-K grades are chosen for flow, and a drift upward changes how it fills.
• Ask what it was intended for. Low-K resin sold as general-purpose will disappoint in an application that needed mechanical strength.
• For anything moulded, ask about colour consistency and regrind content if it is not prime.

Buying or selling this?

Browse the board to see what is listed today — public, no account needed. Nothing matching? Post a Wanted requirement with the grade and tonnage you need and sellers come to you. Selling it? List it — free, no commission.