Claims
- 1. A method for modifying a polymeric resin that comprises:
- (1) providing a polymeric resin;
- (2) providing a liquid concentrate comprising:
- (I) a substantially nonaqueous, rosin based vehicle comprising:
- (A) at least about 52 percent by weight of the vehicle of at least one non-polymeric organic rosin ester;
- (B) at least about 0.1 percent by weight of the total concentrate of at least one surfactant having a surfactant demand which is met by a concentration of no more than about 20 percent by weight of the total concentrate; and
- (II) up to about 85 percent by weight of the total concentrate of at least one colorant or additive; and
- (3) intimately blending a major amount of said polymeric resin with a minor property improving amount of said liquid concentrate;
- wherein said concentrate flows readily by gravity and is characterized by a viscosity at 25.degree. C. under a shear stress of 12.5 thousand dynes/cm.sup.2 of about 5 to about 1,500 poise.
- 2. The method of claim 1 wherein component (A) comprises a lower alkyl ester of an abietic acid based rosin.
- 3. The method of claim 2 wherein said lower alkyl ester comprises the methyl ester of abietic acid.
- 4. The method of claim 1 wherein component (A) comprises a glycerol, pentaerythritol, triethylene glycol or phthalate ester of an abietic acid based rosin.
- 5. The method of claim 1 wherein component (B) comprises a poly(12-hydroxystearic acid) based surfactant.
- 6. The method of claim 1 wherein at least a portion of the acid end groups of said poly(12-hydroxystearic acid) are amidized.
- 7. The method of claim 6 wherein said acid end groups are amidized with N,N-dimethyl-1,3-propanediamine.
- 8. The method of claim 1 wherein said surfactant is an adduct of poly(12-hydroxystearic acid) and a polyethyleneimine.
- 9. The method of claim 1 wherein said vehicle further comprises a low viscosity organic diluent.
- 10. The method of claim 9 wherein said diluent comprises a mineral oil.
- 11. The method of claim 1 wherein said additive is selected from the group comprising colorants, U.V. stabilizers, antioxidants, fire retardants, and blowing agents, antistats, lubricants, impact modifiers, and mold release agents.
- 12. A method according to claim 1 wherein said non-polymeric rosin ester is liquid at 25.degree. C. or has a softening point from about 25.degree. C. up to about 80.degree. C.
- 13. The method of claim 1 wherein said non-polymeric rosin ester is a lower alkyl ester of rosin.
- 14. A method according to claim 1 wherein said rosin based vehicle is substantially free of water.
- 15. A method according to claim 14 wherein said rosin based vehicle contains less than about 0.1 percent by weight of the total concentrate of water.
- 16. A method according to claim 1 wherein said liquid concentrate is prepared by a process that comprises:
- (1) blending said rosin (A) with said surfactant (B) to obtain vehicle (I); and
- (2) mixing said colorant or additive (II) with said vehicle (I) to obtain said concentrate.
CROSS-REFERENCE TO RELATED APPLICATIONS
The present application is a continuation-in-part of the copending parent application, Ser. No. 07/545,350 filed Jun. 27, 1990, now abandoned which is hereby fully incorporated by reference herein.
US Referenced Citations (15)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
545350 |
Jun 1990 |
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