Composition, connector, process for improving bonding between two or more means for conveying fluids, and system for conveying fluids

Patent metadata

Field	Value
Publication number	US-10100170-B2
Application number	US-201314428402-A
Country	US
Kind code	B2
Filing date	Sep 20, 2013
Priority date	Sep 28, 2012
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A composition comprising: (a) a thermoplastic polymer; (b) a plurality of particles, each said particle having core-shell structure and comprising, (i) a core comprising one or more magnetic materials and (ii) a shell comprising silicon dioxide; wherein the composition comprises particles (b) in an amount from 2 to 15 wt % is provided. Further provided is a connector comprising the composition, a system comprising the connector and a process for improving bonding between two or more means for conveying fluids.

First claim

We claim:

1. A connector, wherein at least a portion of the connector comprises:
a composition which comprises
(a) a thermoplastic polymer comprising an ethylene-based polymer comprising units derived from ethylene and octene, and the ethylene-based polymer has a melt index, I 2 , from 0.001 g/10 min to 5 g/10 min, a density from 0.919 g/cm 3 to 0.959 g/cm 3 , and a melting point from 115° C. to 140° C.;
(b) a plurality of particles, each said particle having a core-shell structure and comprising,
(i) a core comprising one or more magnetic materials and
(ii) a shell comprising silicon dioxide;

wherein the composition comprises particles (b) in an amount from 2 to 15 wt %;
wherein the connector is a first flange integral to a first thermoplastic pipe at an end of the first pipe; and
the first flange abuts and is bonded to a second flange integral to a second thermoplastic pipe at an end of the second pipe.

2. The connector according to claim 1 , wherein the composition further comprises one or more additive selected from the group consisting of organic and/or inorganic pigments, organic and/or inorganic fillers, dyes, antioxidants, plasticizers, UV absorbers, carbon black, slip agents, fire retardants, and combinations of two or more thereof.

3. The connector according to claim 1 , wherein the cores of the particles comprise an iron oxide.

4. The connector according to claim 1 , wherein the particles (b) have an average diameter ranging from 30 to 70 nm.

5. The composition according to claim 1 , wherein the ethylene-based polymer has a melt index, I 2 , from 0.05 to 0.5 g/10 min.

6. The composition according to claim 5 , wherein the ethylene-based polymer has a density from 0.935 to 0.955 g/cm 3 .

7. The composition according to claim 1 , wherein the ethylene-based polymer has a melt index, I 2 , from 0.54 g/10 min to 0.56 g/10 min.

8. The connector of claim 1 , wherein the bonding between the first flange and the second flange can withstand fluid pressures up to 3,000 psig.

Assignees

• Dow Global Technologies Llc

Inventors

• Schramm Detlef
• Koopmans Rudolf J
• Zalemea Bustillo Luis G

Classifications

• C08K3/34

  Silicon-containing compounds · CPC title

• C08L23/0815

  with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title

• C08K3/01

  characterized by their specific function · CPC title

• C08K3/36

  Silica · CPC title

• F16L13/02

  Welded joints · CPC title