US 2021/0070945 A1 · PROCESS AND PREMIX FOR INCORPORATING OPTICAL BRIGHTENERS INTO A POLYMERIC COMPOSITION

Abstract

Methods for improving the dispersion of optical brighteners in polymeric compositions are provided. Polymeric compositions obtained by these methods are also provided. Premixes for use in the methods are also provided. In particular, methods for incorporating an optical brightener in a polymeric composition comprising dissolving the optical brightener in a solvent prior to adding the optical brightener to the polymeric compositions are provided.

Claims21

Dependent claims

An addition curable organopolysiloxane composition X comprising:

a) at least one organopolysiloxane A having at least two alkenyl groups bonded to silicon per molecule, said alkenyl groups each containing from 2 to 14 carbon atoms,
b) at least one silicon compound B having at least two hydrogen atoms bonded to silicon per molecule,
c) at least one addition reaction catalyst C, and
d) at least one optical brightener E dissolved in at least one solvent D.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/011,086Filed 3 Sep 2020

Priority

6 Sep 2019

Published

11 Mar 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

C08G 77/12
Polysiloxanes: containing silicon bound to hydrogen
C08G 77/20
Polysiloxanes: containing silicon bound to unsaturated aliphatic groups
C08K 5/0041
Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59: optical brightening agents, organic pigments
C08K 5/45
Sulfur-, selenium-, or tellurium-containing compounds: heterocyclic compounds having sulfur in the ring

Process and premix for incorporating optical brighteners into a polymeric composition

Life of this patent

Process and premix for incorporating optical brighteners into a polymeric composition

Life of this patent

Abstract

Claims21