IP Library Granted Patent US 6,883,413
Granted Patent B2
US 6,883,413 · App. 10/429,038 · Granted Apr 26, 2005

Visible and UV/visible light anaerobic curable primer mix coating

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 6,883,413
App. No.
10/429,038
Granted
Apr 26, 2005
Kind
B2
Abstract

This invention relates to a visible light or UV/visible light and anaerobically curable composition for encapsulating the surface of the primer mix disposed in the primer cup, particularly for use in center fire ammunition.

Claims (27)

1. A visible or UV/visible radiation and anaerobically curable composition, comprising:

a. (meth)acrylate component;

b. an anaerobic cure-inducing component comprising peroxide, saccharin, toluidenes, acetyl phenylhydrazine, and maleic acid; and

c. a photoinitator component comprising a visible light cure photoinitiator and optionally a UV/visible light cure photoinitiator.

2. The composition of claim 1 , wherein the anaerobic cure-inducing composition should be used in an amount up to about 10% by weight of the total composition.

3. The composition of claim 1 , wherein the photoinitiator component is selected from the group consisting of bis(2,4,6-trimethyl benzoyl)phenyl phosphine oxide, bis(η 5 -2,4-cyclopentadien-1-yl)-bis-[2,6-difluoro-3-(1H-pyrrol-1-yl)phenyl]titanium, camphorquinone, quinones, fluorones, and combinations thereof.

4. The composition of claim 1 , wherein the photoinitator component further comprises a UV/visible photoinitiator selected from the group consisting of 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholino propan-1-one, 2-benzyl-2-N,N-dimethylamino-1-(4-morpholinophenyl)-1-butanone, 1-hydroxy cyclohexyl phenyl ketone, benzophenone, 2,2-dimethoxy-2-phenyl acetophenone, bis(2,6-dimethoxybenzoyl-2,4,4-trimethyl pentyl) phosphine oxide, 2-hydroxy-2-methyl-1-phenyl-propan-1-one, 2-hydroxy-2-methyl-1-phenyl-1-propane, 2,4,6-trimethylbenzoyldiphenyl-phosphine oxide, alkyl pyruvates, and combinations thereof.

5. A process for making the composition of claim 1 , a step of which includes:

a. combining in an open vessel in the substantial absence of radiation in the visible region of the electromagnetic spectrum the components (a)-(c).

6. A process for assembling ammunition, the steps of which comprise:

a. providing at least a partially assembled cartridge, one end of which having a pocket dimensioned and disposed to receive a primer cup;

b. providing a primer cup dimensioned and disposed to be received by said pocket of said partially assembled cartridge, in said primer cup is disposed a primer mix;

c. applying over the primer mix disposed in the primer cup a visible or UV/visible radiation and anaerobically curable composition, comprising:

i. (meth)acrylate component;

ii. an anaerobic cure-inducing component; and

iii. a photoinitiator component comprising a visible light cure photoinitiator and optionally a UV/visible light cure photoinitiator;

d. exposing the composition to visible radiation, and optionally UV/visible radiation, sufficient to initiate cure;

e. permitting the composition to cure under anaerobic conditions; and

f. inserting said primer cup into said pocket.

7. Ammunition comprising:

a bullet forming the front end of the ammunition, to which the bullet is attached to a cartridge casing;

a cartridge case forming the back end of the ammunition, in which is a primer pocket dimensioned and disposed to receive a primer cup;

a primer cup dimensioned and disposed to be received by the primer pocket, in said primer cup is disposed a primer mix and an anvil; and

a visible or UV/visible radiation and anaerobically curable composition, comprising:

a. (meth)acrylate component;

b. an anaerobic cure-inducing component; and

c. a potoinitiator component comprising a visible light cure photoinitiator and optionally a UV/visible light cure photoinitiator, dispensed over the primer mix and anvil in the primer cup, after having been exposed to radiation in the visible range of the electromagnetic spectrum, optionally radiation in the UV/visible range of the electromagnetic spectrum, and anaerobic conditions.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2015
From: HENKEL US IP LLC
To: HENKEL IP & HOLDING GMBH
Reel/Frame 035100/0151 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2014
From: HENKEL CORPORATION
To: HENKEL US IP LLC
Reel/Frame 034183/0611 →
MERGER Recorded Feb 14, 2005
From: HENKEL LOCTITE CORPORATION
To: HENKEL CORPORATION
Reel/Frame 016265/0638 →