Curable organopolysiloxane compositions

A curable organopolysiloxane composition, comprising:

• an addition-crosslinkable organopolysiloxane component, comprising
• (A) compounds having radicals containing aliphatic carbon—carbon multiple bonds,
• (B) organopolysiloxanes containing Si-bonded hydrogen atoms, and/or
• (C) organopolysiloxanes having SiC-bonded radicals containing aliphatic carbon—carbon multiple bonds and Si-bonded hydrogen atoms, and a catalyst component comprising
• (D) a platinum catalyst selected from the group consisting of
• (PR23)2Pt(—C≡C—R3)2 (III),
• (R22P—R4—PR22)Pt(—C≡C—R3)2 (IV)
• and
• H—C≡C—R5—C≡C—[—Pt(PR23)2—C≡C—R5—C≡C—]e—H (V)
• where
• R2 may be identical or different and are monovalent, substituted or unsubstituted hydrocarbon radicals having from 1 to 24 carbon atoms, halogen atoms, hydrogen atoms, hydroxy radicals, —CN or —SCN, which are bound to phosphorus either directly or via oxygen, nitrogen or sulfur,
• R3 are identical or different monovalent, substituted or unsubstituted hydrocarbon radicals having from 1 to 24 carbon atoms,
• R4 are identical or different divalent, substituted or unsubstituted hydrocarbon radicals having from 1 to 14 carbon atoms,
• R5 are identical or different divalent, substituted or unsubstituted hydrocarbon radicals having from 1 to 24 carbon atoms, and
• e is an integer greater than or equal to 1.