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You are here: Home / Technical / SSPC: The Society for Protective Coatings / Paints and Coatings / Chlorinated Rubber Topcoat Paint

Chlorinated Rubber Topcoat Paint

Rust Bullet

Using Chlorinated Rubber Topcoat Paint

PAINT SPECIFICATION NO.19 – Chlorinated Rubber Topcoat Paint

1. Scope
1.1 This specification covers a fast drying chlorinated rubber topcoat paint, available in white or tints, intended for use as either a topcoat or intermediate coat over a chlorinated rubber intermediate, chlorinated rubber primer, or another suit­able primer. It has good durability when exposed to exterior environments, but may show some tendency to chalk. This coating may be used on exterior non-submerged surfaces, as well as most submerged surfaces. This coating is not recommended for areas exposed to strong organic solvents, oxidizing acids, or to areas where the surface temperature exceeds 165°F (74°C). Straight chain unsaturated acids, and fats and oils of animal or vegetable origin will cause softening and swelling of the coating.

1.2 This coating is suitable for exposures in Environmental Zones 1A (interior, normally dry), 1B (exterior, normally dry), 2A (frequently wet by fresh water), 2B (frequently wet by salt water), 2C (fresh water immersion), 2D (salt water immersion), 3A (chemical, acid), 3B (chemical, neutral), and 3C (chemical, alkaline).

1.3 This paint is intended for application by brush, roller, or spray and is to be applied in accordance with SSPC-PA 1, “Shop, Field, and Maintenance Painting of Steel.”

1.4 The preferred types of primers for use under this coating and on steel surfaces include chlorinated rubber (SSPC-Paint 17), modified chlorinated rubber, chemically cured epoxy, zinc-rich, and others specifically recommended by the manufacturer. Re-coat of each primer should conform to the manufacturer’s directions. Where a zinc-rich primer is used and the system is considered for water-immersion services, a seal coat between the primer and this intermediate coat may be required to eliminate blistering.

1.5 If this coating is applied over alkyd or oil-base enamels, there is the possibility of lifting, particularly on interior surfaces. A spot check is necessary to determine suitability. If lifting oc­curs, then a seal coat, as recommended by the manufacturer, may be required. For immersion service, this coating should not be applied over alkyd or oil-base enamels.

2. Description
2.1 This coating is a mixture of colored pigments, tinting pig­ments, chlorinated rubber, chlorinated resins, plasticizers, and solvents. Details of the composition are given in Table 1.
2.2 This paint contains approximately 35% by volume of nonvolatile film-forming solids (pigment and binder). The theo­retical spreading rate for a 1.5 mil (38 micrometers) dry film thickness is 375 square feet/U.S. gallon (9.2 square meters/liter). Actual spreading rates can be significantly lower.

3. Referenced Standards
3.1 The latest issue, revision, or amendment of the refer­enced standards in effect on the date of invitation to bid shall govern, unless otherwise specified.
3.2 If there is a conflict between the requirements of any of the cited referenced standards and this specification, the requirements of this specification shall prevail.

3.3 SSPC STANDARDS:

SSPC Guide 13

Guide for the Identification and Use of Industrial Coating Material in Computerized Product Databases

PA 1

Shop, Field, and Maintenance Painting of Steel

Paint 17

Chlorinated Rubber Primer

Paint 18

Chlorinated Rubber Intermediate Coat Paint

3.4 ASTM INTERNATIONAL STANDARDS:

D 13 Specification for Spirits of Turpentine
D 185 Test Methods for Coarse Particles in Pig­ments, Pastes, and Paints
D 445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity)
D 562 Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-type Viscometer
D 1208 Test Methods for Common Properties of Certain Pigments
D 1210 Test Methods for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-type Gage
D 1296 Test Method for Odor of Volatile Solvents and Diluents
D 1475 Test Method for Density of Liquid Coatings, Inks, and Related Products
D 1542 (withdrawn) Test Method for Qualitative Detection of Rosin in Varnishes
D 3278 Test Methods for Flash Point of Liquids by Small-Scale Closed-Cup Apparatus
D 3925 Practice for Sampling Liquid Paints and Related Pigmented Coatings

3.5 FEDERAL STANDARDS:
MIL-C-429 Chlorinated Paraffin, Technical
FED-STD-141 Paint, Varnish, Lacquer and Related Materials: Methods of Inspection, Sampling and Testing
Method 2011.2 (canceled) Preparation of Steel Panels
Method 3011 Condition in Container
Method 402.1 (canceled) Pigment Content (Ordinary Centrifuge)
Method 4053 Nonvolatile Vehicle Content
Method 4061 Drying Time
Method 4203 Reducibility and Dilution Stability
Method 4321 Brushing Properties
Method 4331 Spraying Properties
Method 4541 (canceled) Working Properties and Appearance of Dried Film
Method 6221 (canceled) Flexibility

3.6 AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) STANDARD:
Z129.1 Hazardous Industrial Chemicals — Precautionary Labeling

4. Composition
4.1 Ingredients and proportions shall be as specified in Table 1.
4.2 The paint components based on the specified ingredients shall be uniform, stable in storage, and free from grit and coarse particles. No rosin or rosin derivatives may be used. Beneficial additives such as anti-skinning agents, suspending agents, or wetting aids may be added.
4.3 The paint shall conform to the composition (analysis) requirements of Table 2.

5. Properties
5.1 The paint shall meet the requirements of Table 3 and Sections 5.2 through 5.6.
5.2 ODOR: Shall be normal for the materials permitted (ASTM D 1296).
5.3 COLOR: The color, or contrasting shade, shall be obtained by using compatible chemically resistant tinting pigments.
5.4 COMPATIBILITY: There shall be no evidence of incompatibility of any of the ingredients of the paint when one volume of paint is slowly mixed with one volume of xylene (FED-STD-141, Method 4203). Solvent blends shall be checked in an unpigmented film deposited on glass. The dried film must be clear and bright. The flexibility and permeability of the trial film shall also be compared with that obtained from the “typical formulation” paint.
5.5 WORKING PROPERTIES: The paint shall be easily applied by all three methods when tested in accordance with FED-STD-141, Methods 4321, 4331, and 4541. The paint shall show no streaking, running, or sagging after drying.
5.6 CONDITION IN CONTAINER: The paint shall show no thickening, curdling, gelling, or hard.caking when tested as specified in FED-STD-141, Method 3011, after storage for 12  months from date of delivery, in a full, tightly covered container, at a temperature of 50-110°F (10-43°C).

6. Labeling
6.1 Labeling shall conform to ANSI Z129.1.
6.2 Technical data shall be provided for at least all data elements categorized as “essential” in SSPC-Guide 13.
6.3 MARKING OF CONTAINERS: Each container shall be legibly marked with the following information:
Name: Chlorinated Rubber Topcoat Paint
Specification: SSPC-Paint 19
Color:
Lot Number:
Stock Number:
Date of Manufacturer:
Quantity of Paint in Container:
Information and Warnings as may be required by
Federal and State Laws:
Manufacturer’s Name and Address:

This paint is intended for use as an intermediate or finish coat over rust inhibitive chlorinated rubber primer or other suitable primers on structural steel. Before applying, remove all moisture, oil, grease, dirt and loose or non-adhering paint. Sound old coatings that are compatible with this chlorinated rubber paint may remain, but damaged areas or areas of poor adhesion must be spot-cleaned and spot-primed.

Preferred primers are chlorinated rubber, modified chlorinated rubber, chemically cured epoxy, zinc-rich, and others specifically recommended by the manufacturer. Where a zinc-rich primer is used and the system is considered for water-immersion service, a seal coat between the primer and this intermediate or topcoat paint may be required to eliminate blistering. Contaminated prime coats shall be cleaned by appropriate methods before application of succeeding coats.

6.4 DIRECTIONS FOR USE: The following directions use shall be supplied with each container of paint:

Directions for Use of Chlorinated Rubber Topcoat Paint

Mix paint thoroughly before use. If simple stirring is inad­equate, pour off most of the liquid into a clean container. Thor­oughly mix the pigment with the remaining liquid, taking care to scrape all the pigment off the bottom of the can. Gradually add the poured-off liquid and mix thoroughly. Mixing may be made easier by transferring contents to a larger container or by pouring the paint to and from another container. Examine bottom of container for unmixed pigment. Screen paint before applying.

Generally, thinners are not used for brush application. For spray application, the coating may be thinned with xylene up to 1-1/2 pints per gallon (190 ml/L) of unthinned paint. A by volume blend of 80% minimum of xylene and 20% maximum of an aliphatic solvent having an evaporation rate faster than that of xylene may be used instead of straight xylene.

Apply by brush or spray to the specified film thickness or, if none is specified, to at least 1.5 mils (38 micrometers) dry or approximately 4 mils (102 micrometers) wet. When application is by spraying, the equipment and operator technique should be properly adjusted to prevent dry spray and to deposit a wet film of paint on the substrate. Clean the equipment with xylene or the reducing thinner both before and after use.

The surface to be painted shall be dry and the surface temperature shall be at least 5°F (3°C) above the dew point. When no ice or frost is present on the substrate, this coating may be applied at temperatures as low as 5°F (-15°C). Do not paint outdoors if precipitation, dew, or condensation is expected before the paint dries.

At temperatures of 50-80°F (15-27°C) and relative hu­midities of 40% to 60% allow at least three hours drying time between coats. Allow at least 48 hours of drying time after the last coat is applied before placing in water immersion service. If the temperature is below 60°F (16°C) or if the relative hu­midity is above 60%, allow 4 to 7 days before placing in water immersion service.

7. Inspection
7.1 All materials (coatings) supplied under this specification are subject to timely inspection by the purchaser or his authorized representative. The purchaser shall have the right to reject any materials supplied which are found to be defective under this specification (see Note 9.1). In case of dispute, unless otherwise specified, the arbitration or settlement procedure established in the procurement documents shall be followed. If no arbitration procedure is established, then a procedure mutually agreeable to the purchaser and material supplier shall be used.
7.2 Samples of paints may be requested by the purchaser and shall be supplied upon request along with the manufacturer’s name and identification for the materials. Samples may be requested at the time the purchase order is placed or may be taken from unopened containers at the job site.
7.3 Unless otherwise specified, the sampling shall be in accordance with ASTM D 3925.

8. Disclaimer
8.1 While every precaution is taken to ensure that all in­formation furnished in SSPC standards and specifications are as accurate, complete, and useful as possible, SSPC cannot assume responsibility nor incur any obligation resulting from the use of any materials, coatings, or methods specified herein, or of the specification or standard itself.
8.2 This specification does not attempt to address problems concerning safety associated with its use. The user of this specification, as well as the user of all products or practices described herein, is responsible for instituting appropriate health and safety practices and for ensuring compliance with all governmental regulations.

9. Notes
Notes are not requirements of this specification.
9.1 The procurement documents should establish the responsibility for samples, testing, and any required affidavit certifying full compliance with the specification.
9.2 ASTM and Federal Standard Test Methods listed as “canceled” or “withdrawn” are no longer maintained, but still available as historical documents.

PAINT SPECIFICATION NO.19 – Chlorinated Rubber Topcoat Paint

Filed Under: Paints and Coatings Tagged With: chlorinated rubber, paint specification, topcoat, topcoat paint

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