LOW GLOSS THERMOPLASTIC ARTICLES

• US 20070173619A1
• Filed: 05/23/2006
• Published: 07/26/2007
• Est. Priority Date: 05/23/2005
• Status: Abandoned Application

• Current Assignee: Sabic Innovative Plastics IP BV (Government of Saudi Arabia)
• Original Assignee: Sabic Innovative Plastics IP BV (Government of Saudi Arabia)
• Inventors: Zhu, Yantao, Ellington, Donald, Miller, Kenneth, Yu, Claire
• Application Number:
  US11/419,912
• Publication Number:
  US 20070173619A1
• Time in Patent Office: Days
• US Class Current: 525/466
• CPC Class Codes: B29C 45/0001 characterised by the choice of material
• CPC Class Codes: B29C 51/002 characterised by the choice of material
• CPC Class Codes: B29K 2067/00 Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2067/006 PBT, i.e. polybutylene terephthalate
• CPC Class Codes: B29K 2069/00 Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2995/0022 Bright, glossy or shiny surface
• CPC Class Codes: C08K 5/1515 Three-membered rings
• CPC Class Codes: C08K 5/5435 containing oxygen in a ring
• CPC Class Codes: C08L 23/0884 Epoxide containing esters
• CPC Class Codes: C08L 2555/40 Mixtures based upon bitumen or asphalt containing functional additives
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 33/10 Homopolymers or copolymers of methacrylic acid esters
• CPC Class Codes: C08L 51/00 Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds for ABS polymers C08L55/02; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 51/04 grafted on to rubbers
• CPC Class Codes: C08L 51/085 on to polysiloxanes
• CPC Class Codes: C08L 53/00 Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 55/00 Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
• CPC Class Codes: C08L 55/02 ABS [Acrylonitrile-Butadiene-Styrene] polymers
• CPC Class Codes: C08L 67/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates
• CPC Class Codes: C08L 9/06 : Copolymers with styrene

Abstract

A composition of matter comprising an article derived from a composition containing: a. from about 30 to 80 wt. % of a polycarbonate component, b. from about 5 to about 50 wt. % of a polyester component, wherein when polybutylene terephthalate is present in the composition, the polybutylene terephthalate is present in conjunction with at least one other polyester that is not polybutylene terephthalate; c. about 2 to about 25 wt. % of an impact modifier; and d. a gloss reducing effective amount of a multifunctional additive comprising at least one epoxy group. The invention also includes injection molding processes, thermoforming processes for making articles.

Claims

1. A composition of matter comprising an article derived from a composition containing:

a. from about 30 to 80 wt. % of a polycarbonate component,

b. from about 5 to about 50 wt. % of a polyester component, wherein when polybutylene terephthalate is present in the composition, the polybutylene terephthalate is present in conjunction with at least one other polyester that is not polybutylene terephthalate;

c. about 2 to about 25 wt. % of an impact modifier; and

d. a gloss reducing effective amount of a multifunctional additive comprising at least one epoxy group.

2. The composition of matter in accordance with claim 1, wherein the polycarbonate is from about 45 to 75 wt. %, the polyester is from about 10 to about 45 wt. % and the impact modifier is from about 4 to about 20 wt. %.

3. The composition of matter in accordance with claim 1, wherein the multifunctional additive is present in an amount that is at least about 0.1 wt. %.

4. The composition of matter of claim 3, wherein the wherein the multifunctional additive is present in an amount that is less than about 5.0 wt %.

5. The composition of matter of claim 4, wherein the viscosity of the composition is less than about 500 Pa-s at 271°

C. as measured by capillary rheometry following the ISO 11443 standard.

6. The composition of matter of claim 4, wherein the multifunctional additive has an epoxy group and a silane group.

7. The composition of matter of claim 4, wherein the multifunctional additive has two epoxy groups.

8. The composition of matter of claim 1, wherein the article is an injected molded article.

9. The composition of matter of claim 1, wherein the article is a thermoformed article.

10. A process for making an article by injection molding comprising:

(a) heating a composition to a temperature that is at least the melting point of the composition to a viscous liquid

(b) injecting the viscous liquid under pressure into a mold cavity dimensioned to the length, width, and height of a the article, and

(c) allowing the injection molded article to cool and solidify into the article,

(d) removing the article from the mold cavity;

wherein composition comprises;

1) from about 30 to 80 wt. % of a polycarbonate component,

2) from about 5 to about 50 wt. % of a polyester component, wherein when polybutylene terephthalate is present in the composition, the polybutylene terephthalate is present in conjunction with at least one other polyester that is not polybutylene terephthalate;

3) from about 2 to about 25 wt. % of an impact modifier; and

4) a gloss reducing effective amount of a multifunctional additive comprising at least one epoxy group.

11. A thermo-forming process for making an article comprising:

(a) extruding a sheet having at least one layer from a composition comprising;

(1) from about 30 to 80 wt. % of a polycarbonate component,

(5) from about 5 to about 50 wt. % of a polyester component, wherein when polybutylene terephthalate is present in the composition, the polybutylene terephthalate is present in conjunction with at least one other polyester that is not polybutylene terephthalate;

(6) about 2 to about 25 wt. % of an impact modifier; and

(7) a gloss reducing effective amount of a multifunctional additive comprising at least one epoxy group.

(b) heating the sheet to a temperature sufficient to soften the sheet,

(c) applying the sheet over a mold dimensioned to the length, width, and height of the article,

(d) cooling and removing the article from the mold.