US 9,751,980 B2Granted

Photoactive additives with photoactive monomers and endcaps

AssigneeSabic Global Technologies B.V.

InventorsJean-Francois Morizur, Paul Dean Sybert, James Franklin Hoover, Peter Johnson, Thomas L. Evans, Amanda Marie Flores

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Abstract

Photoactive additives, such as cross-linkable polycarbonate resins, are disclosed. The additive is formed from the reaction of a monohydroxybenzophenone, a dihydroxybenzophenone, a diol chain extender, and one or more linker moieties having functional groups that react with the phenolic groups on the other ingredients. If desired, a secondary linker moiety and/or an end-capping agent can be used. When added to a base polymeric resin, the photoactive additive permits crosslinking when exposed to ultraviolet light.

Claims53

Dependent claims

A photoactive additive formed from the reaction of:

a monohydroxybenzophenone;
a dihydroxybenzophenone;
a diol chain extender;
a first linker moiety comprising a plurality of functional groups, wherein each functional group reacts with the hydroxyl groups of the monohydroxybenzophenone, the dihydroxybenzophenone and the diol chain extender;
and
a non-photoactive end-capping agent selected from the group consisting of p-cumylphenol and octylphenol;
wherein the photoactive additive does not contain any residual pyridine;
and
wherein the additive is made by the process of:
combining the dihydroxybenzophenone, the diol chain extender, an aliphatic tertiary amine catalyst, water, and a water-immiscible solvent to form a reaction mixture;
adding the first linker moiety to the reaction mixture over a first time period while co-adding a base to regulate the reaction pH;
adding the monohydroxybenzophenone to the reaction mixture for a second time period while continuing to add the first linker moiety and the base;
and
continuing to add the first linker moiety and the base to the reaction mixture for a third time period after addition of the monohydroxybenzophenone is complete to obtain the photoactive additive.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/209,735Filed 13 Mar 2014 · us provisional application
Priority: 13 Mar 2013
Published: US 2014/0275321 A118 Sep 2014
Granted: 5 Sep 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

C08G 64/14
Not containing aliphatic unsaturation: containing a chain-terminating or -crosslinking agent
C08G 64/06
Aromatic polycarbonates: not containing aliphatic unsaturation
C08G 64/24
Using carbonyl halides: and phenols
C08J 7/123
Chemical modification: treatment by wave energy or particle radiation

Family

Application61/780,222Us provisional application · filed 13 Mar 2013
US 2014/0275321 A1Pre-grant publication · published 18 Sep 2014
US 9,751,980 B2This patent

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

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