US 11,453,731 B2 · Curable fluorocopolymer formed from tetrafluoropropene

Abstract

The present invention is directed to partially fluorinated copolymers and the production thereof. More specifically, the copolymers, which are preferably produced by a solution polymerization process, preferably have at least three units, the first unit selected from 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene, the second unit having a polymerized monomer selected from the vinyl esters and vinyl ethers, and the third unit having a polymerized monomer derived from a hydroxyl group-containing vinyl ether. The resulting copolymer is environmentally friendly, has favorable molecular weight characteristics, and may be shipped economically in high concentration.

Claims16

Dependent claims

A copolymer composition comprising a copolymer and a solvent or solvents, wherein said copolymer consists of:

(a) from 40 mol % to 60 mol % of polymerized monomers of 1,3,3,3-tetrafluoropropene;
(b) from 5 mol % to 45 mol % of polymerized monomers of vinyl ester(s) or vinyl ether(s);
and
(c) from 3 mol % to 30 mol % of polymerized monomers of hydroxyl group-containing vinyl ether(s);
wherein said solvent or solvents comprise from 15-50 wt % of said copolymer composition.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/220,189Filed 14 Dec 2018 · continuation

Priority

22 Oct 2013

Published

US 2019/0382513 A119 Dec 2019

Granted

27 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C08F 216/14
By an ether radical: monomers containing only one unsaturated aliphatic radical
C08F 4/76
Selected from refractory metals: selected from titanium, zirconium, hafnium, vanadium, niobium or tantalum
C08F 14/18
Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond,…
C08F 14/185
Monomers containing fluorine: monomers containing fluorine not covered by the groups C08F14/20 - C08F14/28

Family

Application61/894,146Us provisional application · filed 22 Oct 2013

Application14/463,747Parent of this continuation · filed 20 Aug 2014

Application15/477,645Parent of this continuation · filed 3 Apr 2017

US 2019/0382513 A1Pre-grant publication · published 19 Dec 2019

US 10,189,918 B2Parent of this continuation

US 9,624,325 B2Parent of this continuation

US 2015/0112015 A1Published application

US 2017/0218097 A1Published application

US 11,453,731 B2This patent

From the US filing history. Foreign family members aren’t listed.

Curable fluorocopolymer formed from tetrafluoropropene

Life of this patent

Curable fluorocopolymer formed from tetrafluoropropene

Life of this patent

Abstract

Claims16