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Surface improver for reinforced composite compositions

A technology of composition and resin composition, which is applied in the field of surface modifier composition and can solve problems such as not having a smooth surface

Inactive Publication Date: 2008-12-03
ASHLAND LICENSING & INTPROP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although these compositions improve the surface smoothness of molded thermoset compositions such as reinforced composites based on polyesters and vinyl esters, such molded composites still do not possess metal-like smooth surfaces

Method used

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  • Surface improver for reinforced composite compositions
  • Surface improver for reinforced composite compositions
  • Surface improver for reinforced composite compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Table 1 shows SMC formulations using epoxidized linseed oil, octyl epoxy resinate, and mixtures thereof. All values ​​in Table 1 are parts by weight. In the preparation of the SMC, 72% of the composition was mixed with 28% by weight of PPG 5509 glass fibers. The B-side consists of 29.90% LP-90; 12.80% Styrene; 9.90% Maglite D; 0.50% CM-2015; and 46.90% Hubercarb W4. Table 2 shows the surface waviness index of the molded panels measured by the Diffracto D-sight measuring station. The 50:50 mixed epoxy compound had a smoother surface than either the single epoxy compound or the epoxy compound mixed in other proportions.

[0082] Table 1

[0083]

[0084] Table 2

[0085]

[0086] Several samples were prepared and tested for surface waviness as described above. The epoxy value of each sample is determined according to test method B in ASTM D1652 Standard Determination Method for Epoxy Content in Epoxy Resins. The viscosity was measured using a Brookfield viscom...

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Abstract

The invention is a composition comprising a blend of two or more epoxide containing compositions selected from epoxidized vegetable oils, epoxidized alkyl esters or cycloaliphatic epoxides. In another embodiment, the invention is a blend of one or more epoxidized vegetable oils, epoxidized alkyl esters, or cycloaliphatic epoxides with one or more aromatic epoxides or epoxy functionalized polyoxyalkylene polyols.

Description

technical field [0001] The present invention relates to surface modifier compositions for thermosetting compositions such as molding compounds based on unsaturated polyesters and vinyl esters. The present invention also relates to thermosetting compositions comprising said surface modifier composition. Background technique [0002] Several groups of compounds have been identified to improve the surface smoothness of reinforced composites based on molded polyesters and vinyl esters. These complexes vary in composition and include epoxy complexes, polycapped oligomer adducts of long-chain fatty acids with multiple hydroxyl functions or multiple epoxy functions, among others. See US Patent 4,525,498 to Atkins. These compounds, when used with thermoplastic additives such as polyvinyl acetate-based thermoplastic compositions, improve shrinkage control and surface smoothness in reinforced composites based on molded polyester and vinyl esters. [0003] Although these composition...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/02C08L63/04C08L63/06C08L63/08C08L63/10C08L33/00C08L67/00C08L75/00C08G59/00C08G59/22C08G59/30C08G59/68C08F283/00C08F283/01C08G59/38
CPCC08L67/06C08G59/38C08G59/226C08F283/01C08K5/1515C08F283/00C08L63/00C08L2666/02C08L63/04C08L63/06
Inventor 罗伯特·L·希茨卡罗尔·G·里德
Owner ASHLAND LICENSING & INTPROP LLC
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